Hp bleed valve prv - Study guides, Class notes & Summaries

Under what conditions would High Pressure (HP) air be used? (FCOM 2; 2.40.1) Correct Answer 1. Descent 2. Other low power setting operations Under what conditions would intermediate pressure (IP) air be used? (FCOM 2; 2.40.1) Correct Answer High power setting operations The engine bleed air switches control which valves by system logic, when bleed air pressure is available? (FCOM 2; 2.40.1; 2.10.25) Correct Answer 1. Engine bleed air valve 2. PRV 3. HP bleed valve Describe the gener...

Boeing 747 Bleed Air System Under what conditions would High Pressure (HP) air be used? - Answer- - Descent - Low power setting operation Under what conditions would Intermediate Pressure (IP) air be used? - Answer- - High power setting operations Which values does the Engine Bleed Air Switches control by system logic when bleed air pressure is available? - Answer- - HP bleed valve - PRV - allows bleed air to open the respective engine bleed air valve and flow into the bleed air duct...

747-400 ENGINE BLEED AIR SYSTEM 290. Under what conditions would High Pressure (HP) air would be used? - Answer- Descent Other low power setting operations FCOM, VOL 2. 2.40.1 291. Under what conditions would Intermediate Pressure (IP) air be used? - Answer- High power setting operations. FCOM, VOL 2; 2.40.1 292. The Engine Bleed Air Switches control which valves by system logic, when bleed air pressure is available? - Answer- Engine bleed air valve PRV HP bleed valve FCOM, ...

Atlas Air 747-400 Air System What happens when Bleed Air switch is placed OFF - Answer- 1. Off light illuminated 2. Engine bleed air valve closed 3. Eicas >BLEED # OFF 4. PRV closed 5. HP Valved closed Bleed Air switch OFF, Nacelle Anti-Ice switch on: - Answer- Unless non-normal condition has been detected, PRV closed position will be over ridden. When will PRV not open for Nacelle Anti-ice or Thrust reversers - Answer- 1. PRV failed closed or closed due to overheat 2. Start val...

B747F Bleed Air System Under what conditions would High Pressure (HP) air be used? - Answer- During descent and other low power setting operations. Under what conditions would Intermediate Pressure (IP) air be used? - Answer- During high power setting operations. Which valves does the Engine Bleed Air Switches control by system logic when bleed air pressure is available? - Answer- Engine bleed air valve, the HP bleed valve and the PRV (pressure regulating valve). Describe the general...

Atlas 747 Oral Rev. 2 - Engine Bleed Air The Engine Bleed Air Switches control which valves by system logic, when bleed air pressure is available? - Answer- Engine bleed air valve|PRV|HP bleed valve Describe the general function of pressure regulating valve (PRV). - Answer- Prevents damage to ducting and equipment downstream, the PRV limits bleed air pressure. How are the engine bleed air valves actuated, and when do they open for forward flow? - Answer- The bleed air valves are pressur...

747 ENGINE BLEED AIR What would cause a Fault light to illuminate? - Answer- Bleed Air overheat Bleed Air overpressure HP Bleed or PRV valve Open when commanded Closed When I place the Engine Bleed Air switch to OFF, what 3 valves close? - Answer- Engine Bleed Air valve PRV HP bleed air valve Do I still have NAI and Thrust reversing with the Engine Bleed air switches OFF? - Answer- Yes, unless the PRV is commanded Closed by Start Valve Open, Bleed Air overheat, or HP valve failed OP...