PNEUMATIC SYSTEM (ATA-36) B777 Quiz designed (by M.Sulaiman) to check the knowledge gaps before the actual Exam What are the three sections of the B777 pneumatic system? a) Engine air supply, air supply distribution, indicating b) Engine air supply, pressurization system, cabin pressure controllers c) ASCPC control, digital control, analog control Answer: a) Engine air supply, air supply distribution, indicating Which stage of the high-pressure compressor (HPC) supplies high pressure bleed air in the engine air supply system? a) 4th stage b) 10th stage c) 12th stage Answer: b) 10th stage How does the ASCPC manage engine bleed air temperature? a) Controls the flow of fan air through the precooler b) Monitors the user systems for decisions c) Adjusts the positions of pressure regulating and shutoff valves Answer: a) Controls the flow of fan air through the precooler What mode does the engine air supply system operate without ASCPC control? a) Pneumatic mode b) Backup mode c) Digital mode Answer: a) Pneumatic mode What does the IPCV (Intermediate Pressure Check Valve) prevent? a) Overpressure indication b) Fourth stage bleed air source c) HP/IP manifold pressure Answer: b) Fourth stage bleed air source Where is the HPSOV (High Pressure Shutoff Valve/Pressure Regulating & Shutoff Valve) located? a) Left side of the engine core b) Right side of the engine core c) Between the HP duct and the HP/IP manifold Answer: b) Right side of the engine core How does the FAMV (Fan Air Modulating Valve) control the quantity of fan air to the precooler? a) Manual override and position indicator assembly b) HPFAC actuator c) ASCPC signal Answer: b) HPFAC actuator
