747 engine bleed air - 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...

How many systems does the Boeing 747 have? 4 separate systems and each is associated with an engine All systems have 2 pumps in ______ parallel System 1 and 4 have bleed air driven pump system 2 and 3 have AC motor driven pump What do Bleed Air and AC driven pumps do? -demand pumps -operated through

Boeing 747 Questions and Answers Rated A+ How many systems does the Boeing 747 have? 4 separate systems and each is associated with an engine All systems have 2 pumps in ______ parallel System 1 and 4 have bleed air driven pump system 2 and 3 have AC motor driven pump What do Bleed Air and AC driven pumps do? -demand pumps -operated through the Demand Hydraulic Pump Switch -Set to; off/automatic/on When is the Bleed Air and AC driven pump used? if system demand is greater...

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...

How many systems does the Boeing 747 have? Correct Answer: 4 separate systems and each is associated with an engine All systems have 2 pumps in ______ Correct Answer: parallel System 1 and 4 have Correct Answer: bleed air driven pump system 2 and 3 have Correct Answer: AC motor driven pump What do Bleed Air and AC driven pumps do? Correct Answer: -demand pumps -operated through the Demand Hydraulic Pump Switch -Set to; off/automatic/on When is the Bleed Air and AC driven pump used

How many systems does the Boeing 747 have? 4 separate systems and each is associated with an engine All systems have 2 pumps in ______ parallel System 1 and 4 have bleed air driven pump system 2 and 3 have AC motor driven pump What do Bleed Air and AC driven pumps do? -demand pumps

Boeing 747 Anti-Ice Systems How many anti-ice systems does the B-737 have? (2 total) - Answer- Bleed air and electrical Name everything that is electrically anti-iced on the B-737? - Answer- Pitot Tubes, Temp. Probes, Alpha vane Anti-Ice system, Windows - Windshield - doors, Water and Toilet drain Anti-Ice system Can the B-373 be dispatched into known or forecast icing conditions? - Answer- Yes, but only into light or moderate icing if dispatcher and pilot agree is is safe, but never se...

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...

747-400 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, ...