[ { "ch": "What safety precaution must be taken before performing an engine boroscope inspection?", "ansGr": [ { "ans": [ "Disconnect the aircraft battery onlyb. Pull the engine fire handle and disconnect EEC connectorsc. Drain the engine oilRef (CAT B1) Answer: B - Ref: ATA 70-00 – B787 RR Trent 1000 Training Material\\nExplanation: Isolating the EEC and pulling the fire handle ensures the engine cannot receive power or fuel during inspection, eliminating ignition risk.", "true" ] } ], "part": "ATA 70 – Standard Practices" }, { "ch": "What is the proper method for cleaning electrical engine connectors?", "ansGr": [ { "ans": [ "Use abrasive pads and waterb. Use approved solvent and lint-free clothc. High-pressure air and fuelRef (CAT B1) Answer: B - Ref: ATA 70-00 – B787 RR Trent 1000 Training Material\\nExplanation: Cleaning sensitive engine connectors requires approved cleaning agents and methods to avoid contamination or damage to the contact surfaces.", "true" ] } ] }, { "ch": "What must be done when replacing engine electrical connectors in the pylon area?", "ansGr": [ { "ans": [ "Use high-pressure air to clean themb. Replace with standard AMP connectorsc. Match connector part number and ensure environmental sealRef (CAT B1) Answer: C - Ref: ATA 70-00 – B787 RR Trent 1000 Training Material\\nExplanation: Environmental sealing and correct part matching are crucial for maintaining system integrity and avoiding electrical faults.", "true" ] } ] }, { "ch": "What is the purpose of using torque seal on engine fasteners?", "ansGr": [ { "ans": [ "Prevent vibrationb. Visually indicate looseningc. Increase torque resistanceRef (CAT B1) Answer: B - Ref: ATA 70-00 – B787 RR Trent 1000 Training Material\\nExplanation: Torque seal is applied to indicate if a fastener has moved, helping identify loosening due to vibration or thermal expansion.", "true" ] } ] }, { "ch": "What reference should be used for material compatibility during engine repairs?", "ansGr": [ { "ans": [ "APU maintenance manualb. SRM onlyc. Aircraft standard practices manual and AMMRef (CAT B1) Answer: C - Ref: ATA 70-00 – B787 RR Trent 1000 Training Material\\nExplanation: To avoid corrosion or improper bonding, always refer to the AMM and Standard Practices Manual for approved materials and procedures.", "true" ] } ] }, { "ch": "What must be done before removing the fan cowl on the Trent 1000 engine?", "ansGr": [ { "ans": [ "Disconnect IDG electrical connectorb. Pull fire switch and secure the cowl doorsc. Shut down the engine and install mechanical locksRef (CAT B1) Answer: C - Ref: ATA 71-10 – B787 RR Trent 1000 Training Material\\nExplanation: Fan cowls are heavy and can close under gravity or wind. Proper support and engine shutdown are essential to prevent injury.", "true" ] } ], "part": "ATA 71 – Powerplant" }, { "ch": "What precaution is required before removing engine mounting bolts?", "ansGr": [ { "ans": [ "Disconnect EICAS powerb. Support the engine with a hoist or cradlec. Deflate the nose gear strutRef (CAT B1) Answer: B - Ref: ATA 71-20 – B787 RR Trent 1000 Training Material\\nExplanation: Supporting the engine before removing mounting bolts is critical to avoid structural stress or uncontrolled engine movement.", "true" ] } ] }, { "ch": "What is a critical alignment requirement during Trent 1000 engine installation?", "ansGr": [ { "ans": [ "Connecting oil filler line firstb. Fan blade shroud contactc. Engine-to-pylon interface pin engagementRef (CAT B1) Answer: C - Ref: ATA 71-20 – B787 RR Trent 1000 Training Material\\nExplanation: Proper pin engagement ensures the engine is correctly aligned and secured to the pylon for safe operation.", "true" ] } ] }, { "ch": "When the thrust reverser cowl is opened, what must be verified before performing maintenance?", "ansGr": [ { "ans": [ "That fire loop A is deactivatedb. That T/R actuator locks are installedc. That EEC power is onRef (CAT B1) Answer: B - Ref: ATA 71-21 – B787 RR Trent 1000 Training Material\\nExplanation: Actuator locks prevent uncommanded T/R movement during maintenance, avoiding injury or damage.", "true" ] } ] }, { "ch": "What system confirms engine mounting bolt torque values after installation?", "ansGr": [ { "ans": [ "Central Maintenance Computer (CMC)", "true" ] }, { "ans": [ "Manual verification with calibrated torque wrenchc. FADECRef (CAT B1) Answer: B - Ref: ATA 71-20 – B787 RR Trent 1000 Training Material\\nExplanation: Torque values are verified manually using calibrated tools and compared against AMM specifications. No automatic system tracks these values.", "true" ] } ] }, { "ch": "What is the function of the Variable Stator Vane (VSV) system in the Trent 1000 engine?", "ansGr": [ { "ans": [ "To increase oil flow to bearingsb. To control airflow into the HP compressorc. To maintain N1 speedRef (CAT B1) Answer: B - Ref: ATA 72-31 – B787 RR Trent 1000 Training Material\\nExplanation: VSVs regulate airflow angle into the HP compressor for optimal performance and stall margin during varying engine speeds.", "true" ] } ], "part": "ATA 72 – Engine" }, { "ch": "What drives the HP compressor in the Trent 1000 engine?", "ansGr": [ { "ans": [ "N1 fanb. Intermediate turbinec. HP turbineRef (CAT B1) Answer: C - Ref: ATA 72-31 – B787 RR Trent 1000 Training Material\\nExplanation: The HP turbine is mechanically connected to the HP compressor, forming the HP spool (N2).", "true" ] } ] }, { "ch": "Which part of the engine houses the combustor module?", "ansGr": [ { "ans": [ "Fan caseb. Core modulec. Turbine rear frameRef (CAT B1) Answer: B - Ref: ATA 72-40 – B787 RR Trent 1000 Training Material\\nExplanation: The combustor is part of the engine core and is located between the HP compressor and HP turbine.", "true" ] } ] }, { "ch": "What precaution must be taken before removing an engine core module?", "ansGr": [ { "ans": [ "Drain the hydraulic reservoirb. Secure the engine mount boltsc. Align and lock rotors to prevent internal damageRef (CAT B1) Answer: C - Ref: ATA 72-00 – B787 RR Trent 1000 Training Material\\nExplanation: Improper handling of rotor alignment can result in interference, damage to blades, or imbalance.", "true" ] } ] }, { "ch": "What tool is used to verify blade tip clearance in the fan module?", "ansGr": [ { "ans": [ "Feeler gaugeb. Laser gap toolc. Dial indicatorRef (CAT B1) Answer: B - Ref: ATA 72-21 – B787 RR Trent 1000 Training Material\\nExplanation: Blade tip clearance is precisely measured using a laser tool to ensure fan blade operation within tolerance.", "true" ] } ] }, { "ch": "What engine component provides mounting support for the fan case and gearbox?", "ansGr": [ { "ans": [ "Fan stator frameb. Engine rear mountc. Low pressure turbine shaftRef (CAT B1) Answer: A - Ref: ATA 72-00 – B787 RR Trent 1000 Training Material\\nExplanation: The fan stator frame supports the fan module and accessory gearboxes, forming a structural core section.", "true" ] } ] }, { "ch": "How is the Low Pressure Turbine (LPT) cooled?", "ansGr": [ { "ans": [ "By bypass air through radial slotsb. With fuel/oil cooling systemc. Through compressor bleed airRef (CAT B1) Answer: C - Ref: ATA 72-52 – B787 RR Trent 1000 Training Material\\nExplanation: Compressor bleed air is routed internally to cool the LPT to prevent overheating and material degradation.", "true" ] } ] }, { "ch": "What is used to prevent oil leakage along rotating engine shafts?", "ansGr": [ { "ans": [ "Fuel sealb. Labyrinth seal with pressurized airc. RTV sealantRef (CAT B1) Answer: B - Ref: ATA 72-00 – B787 RR Trent 1000 Training Material\\nExplanation: Labyrinth seals combined with pressurized air form a non-contact barrier to keep oil within bearing compartments.", "true" ] } ] }, { "ch": "What condition requires an in-depth engine vibration inspection?", "ansGr": [ { "ans": [ "Engine stall during startb. Increase in oil pressurec. High N1 vibration on EICASRef (CAT B1) Answer: C - Ref: ATA 72-00 – B787 RR Trent 1000 Training Material\\nExplanation: High N1 vibration readings may indicate fan imbalance, damaged blades, or bearing faults requiring further investigation.", "true" ] } ] }, { "ch": "During fan blade replacement, what is critical for balance?", "ansGr": [ { "ans": [ "Replace only with fan tip capb. Match the blade's moment weightc. Clean the blade root thoroughlyRef (CAT B1) Answer: B - Ref: ATA 72-21 – B787 RR Trent 1000 Training Material\\nExplanation: Fan blade sets are weight-matched to maintain balance. Replacing one requires using a blade with the same moment weight.", "true" ] } ] }, { "ch": "What component regulates the fuel flow to the engine?", "ansGr": [ { "ans": [ "Fuel spar valveb. Fuel metering unit in the FMUc. Fuel filter bypass valveRef (CAT B1) Answer: B - Ref: ATA 73-20 – B787 RR Trent 1000 Training Material\\nExplanation: The Fuel Metering Unit is part of the FMU and precisely meters fuel flow to the injectors under EEC control.", "true" ] } ], "part": "ATA 73 – Engine Fuel and Control" }, { "ch": "What is the purpose of the LP fuel pump?", "ansGr": [ { "ans": [ "Send fuel to the APUb. Supply suction for hydraulic reservoirc. Boost pressure to HP fuel pumpRef (CAT B1) Answer: C - Ref: ATA 73-10 – B787 RR Trent 1000 Training Material\\nExplanation: The LP pump increases pressure to feed the HP pump, ensuring uninterrupted fuel flow during engine operation.", "true" ] } ] }, { "ch": "What happens if the HP fuel pump bypass valve opens?", "ansGr": [ { "ans": [ "Fuel bypasses to the LP pumpb. Fuel stops flowingc. Fuel is vented overboardRef (CAT B1) Answer: A - Ref: ATA 73-20 – B787 RR Trent 1000 Training Material\\nExplanation: The HP bypass valve prevents overpressure by routing excess fuel back to the LP side of the system.", "true" ] } ] }, { "ch": "How is the fuel spar valve actuated?", "ansGr": [ { "ans": [ "Electrically by EECb. Pneumaticallyc. Manually via override leverRef (CAT B1) Answer: A - Ref: ATA 73-21 – B787 RR Trent 1000 Training Material\\nExplanation: The EEC controls the fuel spar valve electrically, allowing remote shutoff of fuel supply during fire or shutdown conditions.", "true" ] } ] }, { "ch": "Where is the fuel filter located in the Trent 1000 engine?", "ansGr": [ { "ans": [ "In the wing tankb. After the LP pumpc. Between HP pump and FMURef (CAT B1) Answer: C - Ref: ATA 73-10 – B787 RR Trent 1000 Training Material\\nExplanation: The fuel filter is installed upstream of the FMU to catch contaminants before they reach precision metering components.", "true" ] } ] }, { "ch": "What EICAS message appears for a fuel filter bypass condition?", "ansGr": [ { "ans": [ "ENG FUEL LOWb. ENG FUEL LEAKc. ENG FUEL FILT BYPASSRef (CAT B1) Answer: C - Ref: ATA 73-10 – B787 RR Trent 1000 Training Material\\nExplanation: If the fuel filter bypasses due to clogging, the EEC triggers an advisory or warning via AIMS/EICAS.", "true" ] } ] }, { "ch": "What sensor monitors fuel temperature at the engine?", "ansGr": [ { "ans": [ "EEC OAT sensorb. Engine fuel temp sensor in FMUc. TAT probeRef (CAT B1) Answer: B - Ref: ATA 73-10 – B787 RR Trent 1000 Training Material\\nExplanation: The engine-mounted fuel temperature sensor provides input to the EEC for fuel scheduling and performance monitoring.", "true" ] } ] }, { "ch": "Why is pressurization of the fuel system important in flight?", "ansGr": [ { "ans": [ "To reduce EGTb. To prevent cavitation and vapor lockc. To provide fuel to hydraulicsRef (CAT B1) Answer: B - Ref: ATA 73-10 – B787 RR Trent 1000 Training Material\\nExplanation: Maintaining fuel pressure prevents vapor bubbles from forming in pumps and injectors, ensuring smooth combustion.", "true" ] } ] }, { "ch": "What is the function of the FMU drain valve?", "ansGr": [ { "ans": [ "To offload excess fuel to the APUb. To manually test for fuel presencec. To drain fuel during maintenance or shutdownRef (CAT B1) Answer: C - Ref: ATA 73-20 – B787 RR Trent 1000 Training Material\\nExplanation: The FMU has a drain feature to release fuel trapped during shutdown or when servicing the system.", "true" ] } ] }, { "ch": "How does the EEC control fuel flow during start-up?", "ansGr": [ { "ans": [ "By adjusting HP pump speedb. By modulating FMU metering valvec. By increasing N1Ref (CAT B1) Answer: B - Ref: ATA 73-20 – B787 RR Trent 1000 Training Material\\nExplanation: The EEC commands the FMU metering valve to deliver the required amount of fuel based on N2 speed and start conditions.", "true" ] } ] }, { "ch": "What controls the ignition system during engine start?", "ansGr": [ { "ans": [ "FADEC backupb. APU controllerc. EECRef (CAT B1) Answer: C - Ref: ATA 74-11 – B787 RR Trent 1000 Training Material\\nExplanation: The Electronic Engine Control (EEC) automatically controls ignition timing, duration, and selection during start sequences.", "true" ] } ], "part": "ATA 74 – Ignition" }, { "ch": "How many igniters are used in the Trent 1000 engine?", "ansGr": [ { "ans": [ "One per combustor sectionb. Two per enginec. One shared between enginesRef (CAT B1) Answer: B - Ref: ATA 74-11 – B787 RR Trent 1000 Training Material\\nExplanation: Each engine is equipped with two igniters (A and B), one in each ignitor plug hole of the combustion chamber.", "true" ] } ] }, { "ch": "What happens if one igniter fails during engine start?", "ansGr": [ { "ans": [ "The EEC aborts the startb. The remaining igniter continues operationc. APU ignition system is usedRef (CAT B1) Answer: B - Ref: ATA 74-11 – B787 RR Trent 1000 Training Material\\nExplanation: The system is designed to operate with a single igniter in the event of a failure to complete the start.", "true" ] } ] }, { "ch": "Where is the ignition exciter located?", "ansGr": [ { "ans": [ "Inside the EECb. Mounted on the fan stator framec. Integrated with the fuel metering unitRef (CAT B1) Answer: B - Ref: ATA 74-11 – B787 RR Trent 1000 Training Material\\nExplanation: The exciter boxes are mounted on the fan stator frame and supply high voltage to the igniter plugs.", "true" ] } ] }, { "ch": "What mode does the ignition system use during in-flight relight?", "ansGr": [ { "ans": [ "Continuous ignitionb. Ground-start modec. Auto-spark suppressionRef (CAT B1) Answer: A - Ref: ATA 74-11 – B787 RR Trent 1000 Training Material\\nExplanation: During in-flight relight or flameout recovery, the system enables continuous ignition to support combustion re-establishment.", "true" ] } ] }, { "ch": "How is the igniter plug connected to the exciter?", "ansGr": [ { "ans": [ "Coaxial ignition leadb. Copper tubec. Fiber-optic cableRef (CAT B1) Answer: A - Ref: ATA 74-11 – B787 RR Trent 1000 Training Material\\nExplanation: The igniter plug receives high-voltage pulses via a shielded coaxial cable from the exciter.", "true" ] } ] }, { "ch": "What controls the duration of ignition in automatic mode?", "ansGr": [ { "ans": [ "Ignition switch on pedestalb. EICAS message logicc. EEC based on N2 and EGTRef (CAT B1) Answer: C - Ref: ATA 74-11 – B787 RR Trent 1000 Training Material\\nExplanation: The EEC determines when to terminate ignition based on successful light-off and rise in N2 and EGT values.", "true" ] } ] }, { "ch": "When is ignition automatically turned on during flight?", "ansGr": [ { "ans": [ "At top of descentb. When EGT dropsc. During flameout detection or severe turbulenceRef (CAT B1) Answer: C - Ref: ATA 74-11 – B787 RR Trent 1000 Training Material\\nExplanation: The EEC activates ignition automatically under certain abnormal conditions like flameout or severe turbulence.", "true" ] } ] }, { "ch": "What maintenance action is required if both igniters are inoperative?", "ansGr": [ { "ans": [ "Replace the EECb. Replace the ignition relayc. Troubleshoot exciter and igniter plugsRef (CAT B1) Answer: C - Ref: ATA 74-11 – B787 RR Trent 1000 Training Material\\nExplanation: If both igniters fail, start by verifying output at the exciter and checking continuity and insulation of the plugs and leads.", "true" ] } ] }, { "ch": "What precaution must be taken when handling igniter plugs?", "ansGr": [ { "ans": [ "Immerse in oilb. Do not touch electrodes or insulationc. Clean with steel brushRef (CAT B1) Answer: B - Ref: ATA 74-11 – B787 RR Trent 1000 Training Material\\nExplanation: Igniter plugs are sensitive to damage or contamination; contact with the tip can degrade insulation and spark quality.", "true" ] } ] }, { "ch": "What is the function of the customer bleed valve (CBV)?", "ansGr": [ { "ans": [ "Controls airflow to turbineb. Diverts bleed air to cabin systemsc. Maintains fuel pressureRef (CAT B1) Answer: B - Ref: ATA 75-20 – B787 RR Trent 1000 Training Material\\nExplanation: The CBV manages the delivery of high-pressure bleed air from the engine to aircraft systems such as ECS and anti-ice.", "true" ] } ], "part": "ATA 75 – Air System" }, { "ch": "Where is engine bleed air tapped from in the Trent 1000?", "ansGr": [ { "ans": [ "LPC onlyb. IPC and HPC stagesc. LPT exitRef (CAT B1) Answer: B - Ref: ATA 75-20 – B787 RR Trent 1000 Training Material\\nExplanation: Bleed air is drawn from both intermediate and high pressure compressor stages depending on power setting and demand.", "true" ] } ] }, { "ch": "How is the HP check valve in the bleed system controlled?", "ansGr": [ { "ans": [ "By EICAS switchesb. It is a passive non-return valvec. EEC sends electrical signalsRef (CAT B1) Answer: B - Ref: ATA 75-20 – B787 RR Trent 1000 Training Material\\nExplanation: The HP check valve is a passive component that prevents reverse flow when high pressure air is not required.", "true" ] } ] }, { "ch": "What condition causes the high-stage valve to open?", "ansGr": [ { "ans": [ "High EGTb. Low air demandc. Low intermediate pressureRef (CAT B1) Answer: C - Ref: ATA 75-21 – B787 RR Trent 1000 Training Material\\nExplanation: If IP pressure is insufficient to meet system demand, the high-stage valve opens to supply air from the high-pressure stage.", "true" ] } ] }, { "ch": "What controls the operation of bleed air valves?", "ansGr": [ { "ans": [ "EICAS logicb. The AIMS systemc. EEC based on demand and pressure sensorsRef (CAT B1) Answer: C - Ref: ATA 75-21 – B787 RR Trent 1000 Training Material\\nExplanation: The EEC monitors pressure and temperature data and commands valve actuation to regulate airflow and prevent overpressure.", "true" ] } ] }, { "ch": "What safety device protects the bleed manifold from overpressure?", "ansGr": [ { "ans": [ "Fire loopb. Pressure regulating shutoff valvec. Overpressure relief valveRef (CAT B1) Answer: C - Ref: ATA 75-21 – B787 RR Trent 1000 Training Material\\nExplanation: If bleed pressure exceeds limits, the overpressure relief valve opens to vent excess air and protect downstream systems.", "true" ] } ] }, { "ch": "What happens if the bleed air temperature becomes excessive?", "ansGr": [ { "ans": [ "CBV closes and EICAS alerts the crewb. Fan speed increasesc. Engine automatically reduces thrustRef (CAT B1) Answer: A - Ref: ATA 75-21 – B787 RR Trent 1000 Training Material\\nExplanation: Over-temperature protection is built-in; the CBV will close to prevent further heating and signal is sent to EICAS.", "true" ] } ] }, { "ch": "What component separates customer air and turbine cooling air?", "ansGr": [ { "ans": [ "Intercoolerb. Pre-cooler heat exchangerc. Air separation valveRef (CAT B1) Answer: B - Ref: ATA 75-22 – B787 RR Trent 1000 Training Material\\nExplanation: The pre-cooler moderates the temperature of bleed air before it’s routed to the ECS or used for turbine cooling.", "true" ] } ] }, { "ch": "What must be verified before performing maintenance on the bleed air duct?", "ansGr": [ { "ans": [ "EEC is poweredb. That the duct is cooled down and depressurizedc. N1 is above idleRef (CAT B1) Answer: B - Ref: ATA 75-21 – B787 RR Trent 1000 Training Material\\nExplanation: Hot pressurized air poses burn and rupture hazards. Always ensure the duct is cooled and depressurized before removal.", "true" ] } ] }, { "ch": "What is the source of cooling air for the engine oil cooler?", "ansGr": [ { "ans": [ "LP turbine bypass airb. Fuel systemc. Engine bleed airRef (CAT B1) Answer: A - Ref: ATA 75-22 – B787 RR Trent 1000 Training Material\\nExplanation: Bypass air is used to cool the oil via a heat exchanger mounted on the fan case.", "true" ] } ] }, { "ch": "What does an ENG BLEED OFF EICAS message typically indicate?", "ansGr": [ { "ans": [ "EEC has lost thrust controlb. CBV is closedc. TAT probe has failedRef (CAT B1) Answer: B - Ref: ATA 75-21 – B787 RR Trent 1000 Training Material\\nExplanation: The message is shown when the bleed air is no longer supplied due to CBV closure, either commanded or fault-induced.", "true" ] } ] }, { "ch": "What type of sensor is used to monitor bleed air temperature?", "ansGr": [ { "ans": [ "Thermocoupleb. RTD (Resistance Temperature Device)", "true" ] }, { "ans": [ "Pressure transducerRef (CAT B1) Answer: B - Ref: ATA 75-22 – B787 RR Trent 1000 Training Material\\nExplanation: RTDs provide accurate temperature readings over a wide range and are commonly used in bleed air duct monitoring.", "true" ] } ] }, { "ch": "What condition requires manual isolation of the bleed system?", "ansGr": [ { "ans": [ "APU not availableb. Engine fire or leakc. In-flight icingRef (CAT B1) Answer: B - Ref: ATA 75-21 – B787 RR Trent 1000 Training Material\\nExplanation: Bleed valves must be manually shut in the event of engine fire, bleed leak, or overheat to contain hazards.", "true" ] } ] }, { "ch": "Where is turbine cooling air routed after use?", "ansGr": [ { "ans": [ "Overboard through fan ductb. Back to bleed manifoldc. Into the exhaust mixerRef (CAT B1) Answer: A - Ref: ATA 75-22 – B787 RR Trent 1000 Training Material\\nExplanation: After cooling turbine components, the air is exhausted through the fan duct, preventing heat accumulation.", "true" ] } ] }, { "ch": "What controls cooling air flow to turbine disks?", "ansGr": [ { "ans": [ "Mechanical valveb. EEC-controlled modulating valvec. Cabin pressure systemRef (CAT B1) Answer: B - Ref: ATA 75-22 – B787 RR Trent 1000 Training Material\\nExplanation: The EEC uses modulating valves to control cooling air flow based on engine temperature and N2 speed.", "true" ] } ] }, { "ch": "What is the primary function of the EEC in the Trent 1000?", "ansGr": [ { "ans": [ "Display N1 speed on the flight deckb. Control thrust and manage engine parametersc. Provide bleed air modulationRef (CAT B1) Answer: B - Ref: ATA 76-11 – B787 RR Trent 1000 Training Material\\nExplanation: The EEC (Electronic Engine Controller) manages fuel flow, variable stator vanes, and thrust settings, ensuring safe and efficient engine operation.", "true" ] } ], "part": "ATA 76 – Engine Controls" }, { "ch": "What power source normally supplies the EEC?", "ansGr": [ { "ans": [ "Aircraft batteryb. PMA (Permanent Magnet Alternator)", "true" ] }, { "ans": [ "Generator control unitRef (CAT B1) Answer: B - Ref: ATA 76-11 – B787 RR Trent 1000 Training Material\\nExplanation: Each EEC is powered by its dedicated PMA during normal engine operation; aircraft power is used only during start-up.", "true" ] } ] }, { "ch": "Which control mode allows full EEC authority?", "ansGr": [ { "ans": [ "Soft reversionary modeb. Hard manual modec. Normal modeRef (CAT B1) Answer: C - Ref: ATA 76-11 – B787 RR Trent 1000 Training Material\\nExplanation: In normal mode, the EEC uses full input from sensors and FADEC logic to control engine parameters.", "true" ] } ] }, { "ch": "What happens if the EEC loses its airframe data inputs?", "ansGr": [ { "ans": [ "It shuts down the engineb. Switches to alternate modec. Maintains idle onlyRef (CAT B1) Answer: B - Ref: ATA 76-11 – B787 RR Trent 1000 Training Material\\nExplanation: In the event of sensor input loss or signal fault, the EEC enters an alternate mode using internal schedules.", "true" ] } ] }, { "ch": "What does the thrust lever angle (TLA) sensor provide to the EEC?", "ansGr": [ { "ans": [ "EGT limitb. Thrust demand positionc. N2 overspeed protectionRef (CAT B1) Answer: B - Ref: ATA 76-11 – B787 RR Trent 1000 Training Material\\nExplanation: TLA sensors indicate pilot demand to the EEC, allowing it to calculate fuel flow and engine parameters accordingly.", "true" ] } ] }, { "ch": "How are the engine control inputs transmitted to the EEC on B787?", "ansGr": [ { "ans": [ "Mechanically via cablesb. Through servo hydraulic linksc. Electrically via AIMS and throttle quadrant unitRef (CAT B1) Answer: C - Ref: ATA 76-11 – B787 RR Trent 1000 Training Material\\nExplanation: The fly-by-wire throttle system transmits electrical signals from the AIMS to the EECs for thrust control.", "true" ] } ] }, { "ch": "What controls the VSV (Variable Stator Vanes) and VBV (Variable Bleed Valves)?", "ansGr": [ { "ans": [ "AIMSb. EECc. Hydraulic actuatorRef (CAT B1) Answer: B - Ref: ATA 76-21 – B787 RR Trent 1000 Training Material\\nExplanation: The EEC controls both VSV and VBV positions to optimize airflow through the engine.", "true" ] } ] }, { "ch": "What component interfaces between the flight deck and engine control system?", "ansGr": [ { "ans": [ "Throttle quadrant unit (TQU)", "true" ] }, { "ans": [ "FADEC relayc. Generator control panelRef (CAT B1) Answer: A - Ref: ATA 76-11 – B787 RR Trent 1000 Training Material\\nExplanation: The TQU sends electrical signals corresponding to throttle lever position to the EEC.", "true" ] } ] }, { "ch": "Which mode does the EEC enter if PMA power is lost?", "ansGr": [ { "ans": [ "Alternate idle modeb. Aircraft power backup modec. Limp-home modeRef (CAT B1) Answer: B - Ref: ATA 76-11 – B787 RR Trent 1000 Training Material\\nExplanation: If the PMA fails, the EEC will revert to aircraft electrical power to maintain engine control.", "true" ] } ] }, { "ch": "What protects the engine against N1 overspeed?", "ansGr": [ { "ans": [ "EEC software logicb. Mechanical governorc. Fuel spar valveRef (CAT B1) Answer: A - Ref: ATA 76-11 – B787 RR Trent 1000 Training Material\\nExplanation: The EEC monitors N1 RPM and modulates fuel flow to prevent the fan from exceeding its design limit.", "true" ] } ] }, { "ch": "What happens to the engine if both EECs fail?", "ansGr": [ { "ans": [ "It reverts to manual controlb. The engine flames outc. It maintains last commanded thrustRef (CAT B1) Answer: C - Ref: ATA 76-11 – B787 RR Trent 1000 Training Material\\nExplanation: A dual EEC failure causes the engine to freeze at its last commanded setting until shut down.", "true" ] } ] }, { "ch": "How does the EEC prevent surge and stall during transients?", "ansGr": [ { "ans": [ "Opens the VSVs fullyb. Reduces fuel flowc. Coordinates VBV and VSV operation with fuel meteringRef (CAT B1) Answer: C - Ref: ATA 76-21 – B787 RR Trent 1000 Training Material\\nExplanation: By adjusting airflow and fuel flow simultaneously, the EEC maintains stable compressor operation.", "true" ] } ] }, { "ch": "What type of signals are used between AIMS and EEC?", "ansGr": [ { "ans": [ "Analogb. Mechanical feedbackc. Digital ARINC 664 (AFDX) signalsRef (CAT B1) Answer: C - Ref: ATA 76-11 – B787 RR Trent 1000 Training Material\\nExplanation: The B787 uses AFDX (Avionics Full Duplex Switched Ethernet) for data transmission between systems like AIMS and EECs.", "true" ] } ] }, { "ch": "What system collects engine performance data for trending on the B787?", "ansGr": [ { "ans": [ "ACARSb. AIMS with Quick Access Recorder (QAR)", "true" ] }, { "ans": [ "Central Maintenance Computer (CMC)Ref (CAT B1) Answer: B - Ref: ATA 77-00 – B787 RR Trent 1000 Training Material\\nExplanation: AIMS transmits performance data to the QAR for maintenance trend monitoring and post-flight analysis.", "true" ] } ], "part": "ATA 77 – Engine Indicating and Recording" }, { "ch": "Where are engine vibration readings displayed?", "ansGr": [ { "ans": [ "Circuit breaker panelb. EICAS displayc. Engine panel in cargo bayRef (CAT B1) Answer: B - Ref: ATA 77-11 – B787 RR Trent 1000 Training Material\\nExplanation: Vibration levels are monitored by the EEC and displayed to the crew via the EICAS system.", "true" ] } ] }, { "ch": "What sensors provide engine vibration data?", "ansGr": [ { "ans": [ "TAT sensorsb. Proximity probes on the fan casec. Accelerometers on the engine bearing supportsRef (CAT B1) Answer: C - Ref: ATA 77-11 – B787 RR Trent 1000 Training Material\\nExplanation: Accelerometers mounted near engine bearings detect abnormal vibration levels in the rotating assemblies.", "true" ] } ] }, { "ch": "What system enables post-flight engine maintenance download?", "ansGr": [ { "ans": [ "Dataload systemb. ACARSc. Maintenance Access Terminal (MAT)Ref (CAT B1) Answer: C - Ref: ATA 77-00 – B787 RR Trent 1000 Training Material\\nExplanation: The MAT connects to the AIMS to download recorded engine data for diagnostic purposes.", "true" ] } ] }, { "ch": "How is EGT (Exhaust Gas Temperature) measured?", "ansGr": [ { "ans": [ "Using dual thermocouples in fan ductb. Multiple thermocouples in turbine exhaustc. Computed from N2 speedRef (CAT B1) Answer: B - Ref: ATA 77-20 – B787 RR Trent 1000 Training Material\\nExplanation: Several thermocouples positioned around the turbine exhaust provide accurate EGT values to the EEC.", "true" ] } ] }, { "ch": "What indicates an EGT exceedance on EICAS?", "ansGr": [ { "ans": [ "Amber “ENG OVHT”", "true" ] }, { "ans": [ "Red “EGT LIMIT”", "true" ] }, { "ans": [ "White “FUEL TEMP HIGH”Ref (CAT B1) Answer: B - Ref: ATA 77-20 – B787 RR Trent 1000 Training Material\\nExplanation: The EICAS alerts the crew to engine temperature exceedances with red EGT limit warnings.", "true" ] } ] }, { "ch": "How is N1 calculated in the B787 Trent 1000?", "ansGr": [ { "ans": [ "Magnetic pickup on LP shaftb. Computed from fan blade anglec. Derived from fuel metering signalRef (CAT B1) Answer: A - Ref: ATA 77-11 – B787 RR Trent 1000 Training Material\\nExplanation: N1 speed is measured by a magnetic sensor located on the LP rotor shaft.", "true" ] } ] }, { "ch": "What condition may cause erratic engine parameter display?", "ansGr": [ { "ans": [ "VBV failureb. EEC sensor faultc. Fuel filter bypassRef (CAT B1) Answer: B - Ref: ATA 77-00 – B787 RR Trent 1000 Training Material\\nExplanation: Sensor malfunctions feeding incorrect data to the EEC can result in erratic or invalid engine indications.", "true" ] } ] }, { "ch": "Which component stores maintenance fault messages?", "ansGr": [ { "ans": [ "EECb. AIMS Maintenance Functionc. Data concentrator unitRef (CAT B1) Answer: B - Ref: ATA 77-00 – B787 RR Trent 1000 Training Material\\nExplanation: AIMS maintains an internal maintenance log that records engine fault messages and performance events.", "true" ] } ] }, { "ch": "How is oil pressure displayed to the flight crew?", "ansGr": [ { "ans": [ "On the center console gaugeb. As digital data on the EICASc. On the MAT screenRef (CAT B1) Answer: B - Ref: ATA 77-30 – B787 RR Trent 1000 Training Material\\nExplanation: Engine oil pressure is digitally transmitted and shown on the EICAS display.", "true" ] } ] }, { "ch": "What action is triggered if N2 overspeed is detected?", "ansGr": [ { "ans": [ "Engine shutdownb. Fuel metering valve closurec. No action unless EGT is also highRef (CAT B1) Answer: B - Ref: ATA 77-11 – B787 RR Trent 1000 Training Material\\nExplanation: If the EEC detects an N2 overspeed, it closes the metering valve to reduce fuel flow and lower RPM.", "true" ] } ] }, { "ch": "What is the function of the Engine Condition Monitoring System (ECMS)?", "ansGr": [ { "ans": [ "Real-time fan blade vibration alertsb. Collection and transmission of engine performance datac. Displays oil temperature in degrees CRef (CAT B1) Answer: B - Ref: ATA 77-00 – B787 RR Trent 1000 Training Material\\nExplanation: ECMS monitors and logs engine performance data to aid in predictive maintenance and health trend analysis.", "true" ] } ] }, { "ch": "What is the primary function of the exhaust nozzle in the Trent 1000?", "ansGr": [ { "ans": [ "Reduce engine vibrationb. Convert thermal energy into thrustc. Divert hot air to the nacelleRef (CAT B1) Answer: B – Ref: ATA 78-00 – B787 RR Trent 1000 Training Material\\nExplanation: The exhaust nozzle channels and accelerates exhaust gases to create thrust through momentum transfer.", "true" ] } ], "part": "ATA 78 – Exhaust" }, { "ch": "How is the exhaust system cooled during flight?", "ansGr": [ { "ans": [ "Fuel-cooled tubingb. Ambient air through passive airflowc. Fan bypass airRef (CAT B1) Answer: C – Ref: ATA 78-10 – B787 RR Trent 1000 Training Material\\nExplanation: Fan bypass air flows around the hot sections of the engine, including the exhaust, to prevent overheating.", "true" ] } ] }, { "ch": "What is the purpose of the exhaust cone?", "ansGr": [ { "ans": [ "Reduces backpressureb. Directs exhaust flow smoothlyc. Supports the LPT shaftRef (CAT B1) Answer: B – Ref: ATA 78-00 – B787 RR Trent 1000 Training Material\\nExplanation: The exhaust cone smooths the gas flow path and minimizes turbulence, contributing to efficient engine operation.", "true" ] } ] }, { "ch": "What component connects the core and fan exhaust flows?", "ansGr": [ { "ans": [ "Bypass ductb. Mixer unitc. HP compressor bleed portRef (CAT B1) Answer: B – Ref: ATA 78-10 – B787 RR Trent 1000 Training Material\\nExplanation: The mixer unit combines the cooler bypass air with the hotter core exhaust gases for noise and thrust efficiency.", "true" ] } ] }, { "ch": "How is the exhaust nozzle attached to the engine?", "ansGr": [ { "ans": [ "Welded directly to the fan caseb. Bolted to the turbine rear framec. Integrated with the turbine bladesRef (CAT B1) Answer: B – Ref: ATA 78-10 – B787 RR Trent 1000 Training Material\\nExplanation: The nozzle is secured to the turbine rear frame using bolts, enabling ease of removal during maintenance.", "true" ] } ] }, { "ch": "What could high EGT with normal N1/N2 indicate related to the exhaust system?", "ansGr": [ { "ans": [ "Engine fireb. Blocked or damaged exhaust nozzlec. Low oil pressureRef (CAT B1) Answer: B – Ref: ATA 78-00 – B787 RR Trent 1000 Training Material\\nExplanation: A damaged or restricted nozzle could increase exhaust backpressure, leading to higher EGT.", "true" ] } ] }, { "ch": "What material is commonly used for the exhaust nozzle?", "ansGr": [ { "ans": [ "Titanium alloyb. Carbon fiberc. Inconel or high-temperature nickel alloyRef (CAT B1) Answer: C – Ref: ATA 78-10 – B787 RR Trent 1000 Training Material\\nExplanation: High-temperature resistant alloys like Inconel are used in exhaust systems to withstand thermal and mechanical stress.", "true" ] } ] }, { "ch": "What inspection method is used to check for cracks in the exhaust duct?", "ansGr": [ { "ans": [ "Ultrasonic inspectionb. Fluorescent penetrant inspection (FPI)", "true" ] }, { "ans": [ "Radiographic imagingRef (CAT B1) Answer: B – Ref: ATA 78-00 – B787 RR Trent 1000 Training Material\\nExplanation: FPI is commonly used for detecting surface cracks in high-temperature components like exhaust ducts.", "true" ] } ] }, { "ch": "What component helps reduce noise in the exhaust flow?", "ansGr": [ { "ans": [ "Acoustic panelb. Bypass valvec. Exhaust mixerRef (CAT B1) Answer: C – Ref: ATA 78-10 – B787 RR Trent 1000 Training Material\\nExplanation: The exhaust mixer reduces engine noise by blending high-speed hot gas with cooler bypass air more gradually.", "true" ] } ] }, { "ch": "Where is exhaust system damage likely to cause abnormal vibration?", "ansGr": [ { "ans": [ "Low pressure spoolb. Turbine rear framec. Exhaust cone or nozzleRef (CAT B1) Answer: C – Ref: ATA 78-00 – B787 RR Trent 1000 Training Material\\nExplanation: Damage to the cone or nozzle may disrupt gas flow symmetry and balance, leading to detectable vibration.", "true" ] } ] }, { "ch": "What component supplies oil to the Trent 1000 engine bearings?", "ansGr": [ { "ans": [ "Engine-driven oil pumpb. External hydraulic reservoirc. PMA lubrication unitRef (CAT B1) Answer: A – Ref: ATA 79-00 – B787 RR Trent 1000 Training Material\\nExplanation: The engine-driven oil pump ensures continuous oil flow to bearings and gears during engine operation.", "true" ] } ], "part": "ATA 79 – Oil System" }, { "ch": "How is the Trent 1000 oil tank vented?", "ansGr": [ { "ans": [ "Sealed under pressureb. Through an overboard vent linec. Through an oil-to-air coolerRef (CAT B1) Answer: B – Ref: ATA 79-10 – B787 RR Trent 1000 Training Material\\nExplanation: The oil tank is vented overboard to prevent overpressure and allow for proper breathing of the system.", "true" ] } ] }, { "ch": "What is the function of the scavenge pump in the oil system?", "ansGr": [ { "ans": [ "Inject oil into the bearingsb. Return oil from bearings to the tankc. Filter oil before combustionRef (CAT B1) Answer: B – Ref: ATA 79-10 – B787 RR Trent 1000 Training Material\\nExplanation: The scavenge pump returns used oil from bearing compartments to the tank, completing the lubrication cycle.", "true" ] } ] }, { "ch": "Where is the oil temperature measured?", "ansGr": [ { "ans": [ "At the tank inletb. In the gearboxc. After the oil coolerRef (CAT B1) Answer: C – Ref: ATA 79-20 – B787 RR Trent 1000 Training Material\\nExplanation: The temperature is measured after the oil passes through the cooler, ensuring it's within operational limits.", "true" ] } ] }, { "ch": "What protects the engine from loss of oil pressure?", "ansGr": [ { "ans": [ "Oil pressure bypass valveb. Redundant fuel systemc. EICAS alert and auto-shutdown logicRef (CAT B1) Answer: C – Ref: ATA 79-30 – B787 RR Trent 1000 Training Material\\nExplanation: In case of oil pressure loss, the EICAS alerts the crew and the EEC may command a shutdown to prevent engine damage.", "true" ] } ] }, { "ch": "What is the function of the oil pressure relief valve?", "ansGr": [ { "ans": [ "Prevent cavitation in fuel systemb. Prevent overpressure in oil linesc. Divert oil to scavenge pumpRef (CAT B1) Answer: B – Ref: ATA 79-10 – B787 RR Trent 1000 Training Material\\nExplanation: It opens when oil pressure exceeds limits, diverting excess oil back to the tank to prevent line damage.", "true" ] } ] }, { "ch": "How is the Trent 1000 oil system cooled?", "ansGr": [ { "ans": [ "Fan air through ram inletb. Using bypass air through heat exchangerc. Via intercooler from APURef (CAT B1) Answer: B – Ref: ATA 79-20 – B787 RR Trent 1000 Training Material\\nExplanation: The oil cooler uses engine bypass air in a heat exchanger mounted in the fan duct to cool the oil.", "true" ] } ] }, { "ch": "What could be a result of clogged oil filters?", "ansGr": [ { "ans": [ "Drop in N1 speedb. Oil bypass indication on EICASc. Over-temperature in turbine sectionRef (CAT B1) Answer: B – Ref: ATA 79-10 – B787 RR Trent 1000 Training Material\\nExplanation: If filters clog, a bypass occurs, and the EICAS will alert the crew to potential contamination or blockage.", "true" ] } ] }, { "ch": "What indicates impending failure of the oil pump?", "ansGr": [ { "ans": [ "High vibrationb. Rising oil consumptionc. Low oil pressure and increasing temperatureRef (CAT B1) Answer: C – Ref: ATA 79-30 – B787 RR Trent 1000 Training Material\\nExplanation: A failing oil pump will show reduced pressure and potentially overheating due to lack of lubrication.", "true" ] } ] }, { "ch": "How many scavenge elements are typically found in the Trent 1000 oil system?", "ansGr": [ { "ans": [ "Oneb. Twoc. Multiple (5 or more)Ref (CAT B1) Answer: C – Ref: ATA 79-10 – B787 RR Trent 1000 Training Material\\nExplanation: The engine has multiple scavenge elements to return oil from various bearing compartments efficiently.", "true" ] } ] }, { "ch": "What type of starter system is used on the Trent 1000 engine?", "ansGr": [ { "ans": [ "Electric motor starterb. Air turbine starterc. Hydraulic impulse starterRef (CAT B1) Answer: B – Ref: ATA 80-00 – B787 RR Trent 1000 Training Material\\nExplanation: The B787 Trent 1000 uses a conventional air turbine starter powered by the APU or ground pneumatic source to spin the engine.", "true" ] } ], "part": "ATA 80 – Starting System" }, { "ch": "What controls the engine start sequence on the B787?", "ansGr": [ { "ans": [ "Manual pilot input via starter switchb. EEC in conjunction with APU controllerc. AIMS using mechanical relaysRef (CAT B1) Answer: B – Ref: ATA 80-00 – B787 RR Trent 1000 Training Material\\nExplanation: The Electronic Engine Control (EEC) manages the full start sequence, receiving input from the APU controller and controlling air and fuel delivery.", "true" ] } ] }, { "ch": "What is the role of the starter air valve (SAV)?", "ansGr": [ { "ans": [ "Regulates oil pressure during startb. Supplies air to APUc. Opens to allow pneumatic air to the air turbine starterRef (CAT B1) Answer: C – Ref: ATA 80-00 – B787 RR Trent 1000 Training Material\\nExplanation: The SAV is an electrically controlled valve that opens during engine start to route pneumatic air to the starter motor.", "true" ] } ] }, { "ch": "What happens if the starter air valve fails to close after engine start?", "ansGr": [ { "ans": [ "Engine shutdown is commandedb. EICAS message is generated and crew notifiedc. Fuel flow is stoppedRef (CAT B1) Answer: B – Ref: ATA 80-00 – B787 RR Trent 1000 Training Material\\nExplanation: If the SAV remains open, it can result in high airflow and pressure loss. EICAS generates a “STARTER VALVE OPEN” caution message.", "true" ] } ] }, { "ch": "What is the purpose of the start valve position sensor?", "ansGr": [ { "ans": [ "Indicates valve failure for EICASb. Adjusts starter air pressurec. Controls igniter timingRef (CAT B1) Answer: A – Ref: ATA 80-00 – B787 RR Trent 1000 Training Material\\nExplanation: This sensor feeds back the open/closed status of the SAV to the EEC and crew via EICAS for system integrity monitoring.", "true" ] } ] }, { "ch": "At what N2 speed does fuel typically flow to the engine during start?", "ansGr": [ { "ans": [ "5%", "true" ] }, { "ans": [ "15%", "true" ] }, { "ans": [ "25%Ref (CAT B1) Answer: C – Ref: ATA 80-00 – B787 RR Trent 1000 Training Material\\nExplanation: Once the N2 spool reaches approximately 25%, the EEC commands fuel introduction and ignition.", "true" ] } ] }, { "ch": "What air source can be used for engine starting on the ground?", "ansGr": [ { "ans": [ "Ram air onlyb. APU or external air cartc. Cabin recirculation fansRef (CAT B1) Answer: B – Ref: ATA 80-00 – B787 RR Trent 1000 Training Material\\nExplanation: Either APU bleed air or a ground air cart can be used to supply the pneumatic air needed to drive the starter.", "true" ] } ] }, { "ch": "What condition prevents engine start initiation?", "ansGr": [ { "ans": [ "N1 above 5%", "true" ] }, { "ans": [ "Starter air valve openc. Fuel temperature below freezingRef (CAT B1) Answer: A – Ref: ATA 80-00 – B787 RR Trent 1000 Training Material\\nExplanation: If N1 is above 5%, it indicates the engine is already rotating or not in a safe condition for start.", "true" ] } ] }, { "ch": "What EICAS alert appears for failed engine start?", "ansGr": [ { "ans": [ "ENG FAILb. STARTER ENGAGEDc. START ABORTRef (CAT B1) Answer: C – Ref: ATA 80-00 – B787 RR Trent 1000 Training Material\\nExplanation: If the EEC detects a failed start, such as lack of N2 or EGT rise, it aborts the start and triggers the START ABORT message.", "true" ] } ] }, { "ch": "What component prevents excessive torque transmission from the starter to the engine?", "ansGr": [ { "ans": [ "Gearbox lockout pinb. Shear couplingc. Start control relayRef (CAT B1) Answer: B – Ref: ATA 80-00 – B787 RR Trent 1000 Training Material\\nExplanation: The shear coupling protects the starter drive and engine by disconnecting mechanically if excessive torque is transmitted during start.", "true" ] } ] } ]