Boeing 767 B1.1
B1.1 engine and APU course, 767-300 with GE CF6-80C2 engines
The CF6-80C2 power plant (ATA 71–80) and the GTCP331 APU (ATA 49). Airframe chapters are not covered yet. 410 questions in 10 chapters, each with a worked explanation. 5 questions in every chapter are free; the rest come with the same subscription as the Part 66 modules.
Chapters
10 chapters · 410 questions
- ATA 71CF6-80C2 Power Plant, Cowls and MountsEngine data, inlet, fan and core cowls, reverser opening system, mounts, drains and hazard areas.50
- ATA 72, 73CF6-80C2 Engine and Fuel DistributionModules and stations, fan, compressors and turbines, gearbox, fuel pump, filter, nozzles and fuel indication.61
- ATA 74, 80CF6-80C2 Ignition and StartingAir sources, starter and starter valve, start sequence and messages, exciters, igniters and motoring.39
- ATA 75CF6-80C2 Engine Air SystemsCore compartment cooling, HPT clearance control, T3 sensor, variable stator vanes and variable bypass valves.27
- ATA 76CF6-80C2 FADEC and Engine ControlsEEC, HMU, control alternator, thrust levers and resolvers, reversionary modes, limits and idle control.46
- ATA 77CF6-80C2 Engine IndicatingN1 and N2 sensors, N2 speed cards, EGT probes and limits, condition monitoring, SEI and vibration.40
- ATA 78CF6-80C2 Thrust ReverserTranslating cowls, blocker doors, CDUs and flex shafts, TRAS brakes, PRSOV, DPV and the interlock.40
- ATA 79CF6-80C2 Engine OilOil tank and servicing, lube and scavenge pump, chip detector, filters, heat exchangers and indication.32
- ATA 49APU General, Control and OilGTCP331-200ER layout, ECU and BITE, speed and EGT sensing, indications and the APU oil system.42
- ATA 49APU Fuel, Starting and AirFuel control unit, flow divider, start sequence, ignition, air intake door, inlet sensors and IGVs.33
Try a few
One free question from each of 6 chapters. Pick your answer, then open the explanation.
ATA 71 · CF6-80C2 Power Plant, Cowls and Mounts
What type of engine is the CF6-80C2F on the 767-300?
- A.Low bypass, three-spool turbofan
- B.High bypass, geared single-rotor fan
- C.High bypass, dual-rotor axial turbofan
Show answer and explanation
Correct answer: C. High bypass, dual-rotor axial turbofan
The CF6-80C2F is a high bypass ratio, axial flow, dual-rotor (N1 and N2) turbofan with FADEC control.
ATA 72, 73 · CF6-80C2 Engine and Fuel Distribution
What drives the CF6-80C2 fan and low pressure compressor?
- A.The accessory gearbox
- B.The low pressure turbine
- C.The high pressure turbine
Show answer and explanation
Correct answer: B. The low pressure turbine
The fan and LPC form the N1 rotor, driven by the LPT. The HPC and HPT form the N2 rotor.
ATA 74, 80 · CF6-80C2 Ignition and Starting
Which rotor does the 767 CF6-80C2 pneumatic starter turn?
- A.N1
- B.Both N1 and N2
- C.N2
Show answer and explanation
Correct answer: C. N2
The starter turns the N2 rotor through the gearbox and the horizontal and radial drive shafts.
ATA 75 · CF6-80C2 Engine Air Systems
Which units control the CF6-80C2 engine air systems?
- A.The pneumatic controller
- B.The EEC and the HMU
- C.The EICAS computers
Show answer and explanation
Correct answer: B. The EEC and the HMU
The EEC commands and the HMU supplies servo fuel to the actuators and valves.
ATA 76 · CF6-80C2 FADEC and Engine Controls
Is there a mechanical link between the 767 thrust levers and the CF6-80C2 fuel control?
- A.No, the EEC must work to run
- B.Yes, a cable to the HMU
- C.Yes, as a backup in hard mode
Show answer and explanation
Correct answer: A. No, the EEC must work to run
There is no mechanical engine control connection; the EEC must be operational for the engine to run.
ATA 77 · CF6-80C2 Engine Indicating
What is the primary thrust indication on the 767 CF6-80C2?
- A.N2
- B.N1
- C.EPR
Show answer and explanation
Correct answer: B. N1
N1 (fan speed) is the primary thrust parameter on the GE-powered 767.
Questions about this course
What does this course cover?
The CF6-80C2 power plant (ATA 71–80) and the GTCP331 APU (ATA 49). Airframe chapters are not covered yet. It is written for the 767-300 with GE CF6-80C2 engines, in 10 chapters that follow the ATA order of the type course.
Is it included in the subscription?
Yes. Every chapter has 5 free questions to try, and all 410 questions come with the same Part66Exams subscription as the Part 66 modules, at no extra cost.
Are these the questions from my course exam?
No. They are written in our own words for revision. Your type course and the aircraft maintenance manual stay the authority, as limits and procedures can differ between airframes and operators.
Can I practise in another language?
Yes. Every question can be read in English or 15 other languages, with a switch back to the original English.