Motor GE.90

(ATA 24) How is the Backup Generator Oil cooled? (GE 90). Fan Air or 2.5 bleed air. Eng Oil Only. Fan air only.

(ATA 24) Where can you add oil to the IDG? (GE 90). Through an Access door in the thrust reverser 6:00 position. Through a panel on the right fan cowl at 6:00 position. The left fan duct cowl must be completely opened.

(ATA 26) What is the access to the strut overheat detectors? (GE 90). Through two panels on the bottom of the fixed leading Edge. Through the forward strut fairing. Through the pressure relief door in the right side of the strut.

(ATA 29) Which of the following statements is true about the Engine Driven Pump (EDP)?. The depressurization solenoid is not part of the engine driven pump (EDP). When the engine driven pump (EDP) is switched OFF, the depressurization solenoid gets electrical power. When the depressurization solenoid is energized, the pump pressure output goes to the hydraulic system.

(ATA 29) Where is the Engine Driven Pump (EDP) located on the GE 90?. Aft face of the engine main gearbox on the right side of each engine. Front face of the engine main gearbox on the left side of each engine. Aft face of the engine main gearbox on the left side of each engine.

(ATA 29) How do you gain access to the EDPs on the GE 90?. Through the right thrust reverser half. Through the right fan cowl. Through the left thrust reverser half.

(ATA 30) What stage of air is used for Engine Cowl Anti-Ice (EAI)? (GE 90). HP3. P7. HP7.

(ATA 30) Where is the EAI pressure sensor on the GE 90 engine?. On the left side of the fan case. Inside of a cooling air shroud. On the right side of the engine fan case.

(ATA 30) What is the function of the Controller Air Cooler (CAC) for the EAI system on the GE 90?. It increases the temperature of the engine bleed air before it reaches the EAI valve. It decreases the temperature of the engine bleed air (HP7) that goes to the EAI valve controller. It filters the bleed air only.

(ATA 36) What does the manifold dual temperature sensor monitor?. The air temperature downstream of the precooler. The temperature of the fan air entering the precooler. The high pressure compressor 10th stage bleed air.

(ATA 36) Where is the HPFAC on the GE 90 Engine?. On the lower right side of the engine fan case at 5:00 position. Inside the fan hub frame area of the engine at the 10:00 position. Outside the fan hub frame area of the engine at the 9:00 position.

(ATA 36) What stages of compression are used for Pneumatics? (GE 90). 8th & 15th. IP7 & HP3. 4th & 10th.

(ATA 36) Where and how many IP check valve(s) is(are) found on each GE 90 (B777 pneumatic system)?. 1 IPCV next to the eighth stage intermediate pressure bleed air source. 2 IPCVs next to an eighth stage bleed air ports in the engine ducting. 1 IPCV next to the fourth stage bleed air source at the 3:00 position in the engine.

(ATA 70) Which of the following are engine critical areas?. Bleed air ducts, Exhaust and Main gear box. Air inlet cowl and interface with engine bleed air. Bleed air ducts and Main gear box.

(ATA 70) When using an extension at a 90 degree angle on a torque wrench with indicator, the torque value on the dialwill be?. Lower than actual value. Higher than the actual value. Same as the actual value.

(ATA 71) How do you know the cowling hold-open rod locking collars are in the locked position?. A lock pin hole is exposed on the locking collar. A yellow stripe becomes visible on the locking collar. You hear a distinct knock when it locks.

(ATA 71) What must you do first before opening the fan cowls?. Open the reverser cowls. Retract and deactivate the leading Edge slats. Retract and deactivate the flaps and slats.

(ATA 71) Which of the following systems or components are NOT connected to the drain mast?. Main fuel pump drive pad. VBV/VSV actuators. Oil tank scupper.

(ATA 71) Where is the drain mast located?. At the 12:00 position on the fan cowl. At the 6:00 position on the thrust reverser aft of the forward latch beam access door. At the 3:00 position on the AGB.

(ATA 72) The take-off thrust printed on the engine data plate is: Equivalent to static thrust at sea level. Measured on-wing at sea level. Measured on-wing at cruise altitude.

(ATA 72) The accessory gearbox is driven by?. The cranking pad. The N2 shaft. The N1 shaft.

(ATA 72) What part of the engine has variable stator vanes?. First 4 stages of the low pressure compressor. First 4 stages of the high pressure compressor. Last 4 stages of the low pressure turbine.

(ATA 72) What airflow passes through the combustion section?. Secondary. Primary. Bypass.

(ATA 72) Which type of bearings support the N1 shaft?. 1 ball and 1 roller. 2 ball bearings. 2 roller bearings.

(ATA 72) How are the 6 main bearings arranged in the engine?. In 6 dry-sump cavities. In 3 dry-sump cavities. In wet-sump cavities.

(ATA 72) An engine running at MAX CONT thrust can run at that setting for: Emergency only. An unlimited amount of time. Limited amount of time.

(ATA 72) Which bearings hold the front of the N1 shaft, and what types are they?. Number 1 (ball – thrust) and number 2 (roller – radial only). Number 1 (roller) and number 2 (ball – thrust). Number 3 ball and number 4 roller.

(ATA 72) Where are the number 1, 2 and 3 bearings located?. In the B sump. In the C sump. In the A sump.

(ATA 72) Which bearing holds the rear of the N1 shaft and in which sump is it located?. Number 4 roller bearing in the B sump. Number 5 roller bearing in the C sump. Number 3 ball bearing in the A sump.

(ATA 73) How is the fuel distributed to the fuel nozzles?. In two manifolds, 20 nozzles and 10 nozzles. In two manifolds with 15 nozzles each. In one manifold to all 30 fuel nozzles.

(ATA 73) Which sensor is used by the Electronic Engine Control (EEC) for variable stator vane (VSV) and variable bleedvalve (VBV) control?. PT25 sensor. T3 sensor. T12 sensor.

(ATA 73) Where is the PT25 sensor located?. On the left side of the engine core at the 11:00 position. On the fan hub frame at the 7:00 position. On the right side of the fan case at the 3:00 position.

(ATA 73) Under which conditions do only 40 tips (connected to Manifold 1) supply fuel?. Takeoff and go-around only. Decel (transient condition) and cold day descent idle. All steady-state high power conditions.

(ATA 73) When does the electronic engine control (EEC) get power from the alternator?. N2 rotor speed is more than 7%. EEC ground test switch on P61 is in test. Main electrical power is unavailable.

(ATA 74) When does the ignition system have only one igniter energized?. Start/ignition selector in Continuous ignition. Engine start in flight. 1st engine start on ground.

(ATA 75) What is the position of the variable stator vanes (VSV) when the engine is at take-off / full power?. Open. Close. Modulating.

(ATA 75) What is the position of the Variable Bypass Valves (VBV) at idle (low power) and at full power?. Closed at low power and open at high power. Open at low power and move closed at high power. Always fully open.

(ATA 76) The fuel control switches cut the fuel to the engine by closing the engine shutoff valve. What other functiondoes the switch have?. Command EEC to send fault data to AIMS. Command a reset of the EEC. Turn off the bleed air supply to the engine starter.

(ATA 77) Why do the N1 FAN and N1 LPT indications on the secondary EICAS display change to dashes at low enginespeeds?. At low speeds there is no need to measure the vibrations because they are always very low. The vibration levels at low speed are too small for the system to measure accurately. The broadband vibration is too large in proportion to the N1 vibration.

(ATA 77) What signals does the N1 speed sensor send?. 2 analog signals to the EEC and 1 analog signal to AIMS. 1 analog signal to the EEC, 1 to AIMS and 1 to the standby engine indicator. 2 digital signals to the EEC and 1 analog signal to AIMS.

(ATA 77) The command sector on the EICAS N1 indication shows the difference between: Calculated N1 and actual N1. Flight FMC selected N1 and actual N1. Commanded N1 and actual N1.

(ATA 78) When is the thrust reverser (T/R) interlock released?. During T/R closing cycle, when the sleeves reach 60% closed. During T/R deploy cycle when the T/R is fully open. During T/R deploy cycle when the sleeves are 60% deployed.

(ATA 78) In the thrust reverser control system there is a hydraulic pressure switch. What pressure does it monitor?. Pressure coming out of the isolation valve. Pressure coming out of the directional control valve. Pressure going into the actuators.

(ATA 78) When opening the thrust reverser cowls on a GE90, which latch should you unlock first?. The tension latches / Deflection limiter latches. The V-band latch. The T-bolt latch.

(ATA 79) Which oil indication is NOT monitored by the electronic engine control (EEC)?. Oil bypass warning / oil filter differential pressure. Oil pressure. Oil quantity.

(ATA 79) What is the primary source for engine oil cooling?. Oil/oil heat extractor. Fuel/oil heat exchanger. Air/oil heat exchanger.

(ATA 77) When will the EGT start limit marker NOT be visible on the EICAS EGT display?. When fuel control switch is in CUTOFF. During start when N1 is less than starter cut-out speed. When the engine is running.

(ATA 80) What holds the start ignition selector in the START position during start?. EEC. AIMS. ELMS.

(ATA 80) In normal autostart, at what engine speed does the EEC close the starter air valve (SAV)?. 64 percent N2. 56 percent N1. 2000 RPM N2.

(ATA 80) At what N2 speed does the EEC de-energize the igniter(s)?. 64% N2. 56% N2. 21.4% N2.