BOEING 747-400 - Air Systems

View previous topic View next topic Go down

BOEING 747-400 - Air Systems

Post  Admin on Tue Dec 01, 2009 11:04 pm

Q 1. Which temperature zones are controlled from the Cabin Temperature Panel?

A. Main deck zones A through E and upper deck.
B. Main deck zones A through E, upper deck, and flight deck.
C. Main deck zones A through E and flight deck.

Q 2. (Passenger/Combi) Which of the following best describes the results of rotating the Equipment Cooling selector to the STBY position?

A. The equipment cooling system warms up prior to selecting NORM for flight.
B. The equipment cooling ground exhaust valve closes and the inboard exhaust valve opens to configure the system for flight.
C. The equipment cooling ground exhaust valve opens when ambient temperature is greater than 50 F (10 C).
D. The aft outflow valve automatically closes.

Q 3. With the Passenger Temperature Selector in AUTO and the air conditioning system operating normally, which temperature zone determines the outlet temperature of the air conditioning packs?

A. The zone requiring the coolest air supply
B. The zone requiring the warmest air supply .
C. The warmest zone.

Q 4. With the master temperature set at 83 degrees F (28 degrees C), what is the maximum zone target temperature setting using the Cabin Temperature Panel?
A. 85 degrees F (29 degrees C).
B. 93 degrees F (34 degrees C)
C. 65 degrees F (18 degrees C)

Q 5. How many cabin altitude controllers are available?
A. Two
B. Three
C. Four
D. Five

Q 6. What condition causes the packs to regulate to maintain an average cabin temperature of 75 degrees F (24 degrees C)?

A. The Passenger Temperature Selector in the ALTN position
B. The master trim air valve closed either manually or automatically
C. All of the above.

Q 7. When the Passenger Temperature Selector is in ALTN, how can flight deck temperature be adjusted?

A. With the FLT DECK Temperature Selector in AUTO
B. With the FLT DECK Temperature Selector in MAN, provided trim air is available
C. By moving the Passenger Temperature Selector toward W or C
D. Flight deck temperature connot be adjusted

Q 8. With both Recirculation Fan Switches ON, all recirculation fans will operate continuously regardless of phase of flight.
A. True.
B. False.

Q 9. Which of the following correctly describes the result of placing the Captain\'s Foot Heater switch to LO or HI?

A. The Captain\'s underfloor electric heaters activate in flight.
B. The Captain\'s underfloor electric heaters activate.
C. Warm air is directed toward the Captain\'s feet.
D. The air conditioning flow rate changes.

Q 10. Do the Captain and First Officer\'s foot and shoulder heaters operate on the ground?
A. Yes
B. No

Q 11. Placing the landing altitude in manual:

A. Causes duct pressure, cabin altitude, cabin rate of change, landing altitude, and differential pressure to be displayed on primary EICAS
B. Displays amber MAN landing altitude annunciation
C. Permits manual selection of landing altitude
D. All the above

Q 12. What does pushing the Outflow Valve MAN L Switch ON do?

A. Causes the EICAS advisory message OUTFLOW VLV L to be displayed
B. Bypasses automatic control for both outflow valves
C. Allows the left outflow valve to be positioned manually
D. First and third statements are correct.

Q 13. When is the EICAS warning message CABIN ALTITUDE displayed?

A. When cabin altitude is excessive.
B. When cabin altitude exceeds 10,000 feet.
C. When cabin altitude exceeds 11,000 feet.
D. When cabin altitude exceeds 14,000 feet.

Q 14. When is the EICAS advisory message PRESS RELIEF displayed?

A. Either or both positive cabin pressure relief valves open with the packs in high flow and pack 2 fails to shut down automatically
B. One of the negative relief valves has opened or a cargo door is unlatched
C. Cabin altitude exceeds 10,000 feet.

Q 15. The cabin pressurization system is normally fully automatic, but the outflow valves may be positioned manually.

A. True.
B. False.

Q 16. Shoulder and foot heaters are provided, but operate in flight only.

A. True.
B. False.

Q 17. Which of the following is true when the HI FLOW Switch is ON?

A. Pack air flow is controlled automatically
B. All operating packs provide high air flow
C. All recirculation fans are turned on
D. All recirculation fans are turned off

Q 17. With the HI FLOW Switch OFF, which of the following is true?

A. Pack air flow is controlled artomatically
B. Packs operate only in normal flow
C. All recirculation fans are turned on

Q 18. With both Recirculation Fan Switches ON and the air conditioning packs HI FLOW Switch off:

A. All recirculation fans operate continuously
B. All packs operate in normal flow
C. Recirculation fan operation and pack air flow are controllled automatically
D. First and second statements are correct.

Q 19. With a Pack Control Selector in the NORM position, which of the following is correct?

Q 20. Pack controller A or B is automatically selected on alternating flights

A. The selected controller is the primary controller
B. The secondary controller is automatically selected in the event of a primary controller failure
C. All of the above

Q 21. Which of the following is true regarding the Passenger Temperature Selector?

A. Sets the Master Temperature for all cabin zones in the AUTO range
B. Provides manual control of passenger zone temperatures in the ALTN position
C. Allows flight attendants to control passenger zone temperatures from the Cabin Temperature Panel in the ALTN position
D. All of the above

Q 22. Recirculation fans augment cabin air ventilation allowing packs to operate at a reduced flow during all phases of flight.

A. True
B. False.

Q 23. When the Landing Altitude (LDG ALT) Switch is pushed from AUTO to MAN:

A. Landing altitude selection to the cabin pressure controllers is now retrieved from the FMS.
B. Landing altitude can be set by rotating the Landing Altitude selector and the EICAS advisory message LANDING ALTITUDE is displayed.
C. Manual selection of cabin pressure controller A or B is possible.

Q 24. Which of the following regarding failure of the selected pack controller is true?

A. With the Pack Control Selector in A or B, the Pack Control Selector must be manually set to the other controller in the event the operating controller fails
B. With the Pack Control Selector in NORM, A or B, control of the pack is automatically switched to the other pack controller
C. If the selected pack controller fails, the Pack Control Selector must be placed in the OFF position before the other controller can be selected

Q 25. How is Master Temperature set?

A. By the cabin crew on the Cabin Temperature Panel
B. By maintenance personnel on the ground prior to flight
C. By the flight crew on the Flight Deck Temperature Selector, with the Flight Deck Temperature Selector in the AUTO range
D. By the flight crew using the Passenger Temperature Selector, with the Passenger Temperature Selector in the AUTO range

Q 26. Duct pressure, cabin altitude and rate, landing altitude, and differential pressure are automatically displayed on the Primary EICAS under which of the following conditions?

A. Manual is selected for Landing Altitude, the engine synoptic display is selected, or the ECS synoptic is selected on the secondary EICAS
B. Cabin altitude or cabin differential pressure are in the caution or warning range
C. Either duct pressure is 11 psi or less
D. CABIN ALT AUTO, LANDING ALT, OUTFLOW VLV, or BLD DUCT LEAK EICAS messages are displayed

Q 27. What does selecting the Equipment Cooling Selector OVRD position do?

A. Manually reconfigures the airplane for flight if automatic reconfiguration fails
B. Overrides the automatic system to provide manual control
C. Provides cooling, using reverse airflow provided by differential pressure.

Q 28. (Freighter) With the Lower Lobe Cargo Conditioned Air Flow Rate selector in the OFF position, which temperature zone determines the outlet temperature of the air conditioning packs?

A. The flight deck zone sets the pack temperature.
B. The zone requiring the warmest temperature sets the pack temperature.
C. The zone requiring the coolest temperature sets the pack temperature.
D. The upper deck sets the pack temperature.

Q 29. (Passenger/Combi) What is the maximum zone target temperature setting using the Passenger Temperature selector?

A. 85 degrees F (29 degrees C).
B. 75 degrees F (25 degrees C).
C. 65 degrees F (18 degrees C).
E. The maximum depends on ambient air temperature.

Q 30. (Freighter) What is the maximum cargo zone target temperature setting using the Main Deck & Lower Lobe Temperature selectors?

A. 75 degrees F (25 degrees C)
B. 85 degrees F (29 degrees C)
C. 65 degrees F (18 degrees C)
D. The maximum depends on ambient air temperature.

Q 31. (Freighter) When AC power is applied to the airplane, the target temperature for the upper deck and crew rest zones is automatically set to what temperature?

A. The target temperature is 65 degrees F (18 degrees C).
B. The target temperature is 75 degrees F (25 degrees C).
C. The target temperature is 85 degrees F (29 degrees C).
D. The target temperature is 40 degrees F (4 degrees C).

Q 32. Which of the following best describes what happens when selecting the landing altitude switch to Manual?

A. Cabin altitude, cabin rate of change and landing altitude display on the primary EICAS.
B. White MAN is displayed next to the landing altitude annunciation.
C. Manual selection of landing altitude is allowed using the Landing Altitude Selector.
D. Landing altitude is set by rotating the Landing Altitude selector. Landing altitude information displays on the primary EICAS followed by an amber MAN.

Q 33. How is the landing field elevation entered in the cabin altitude controller?

A. Automatically from the FMC.
B. Manually using the Landing Altitude Selector.
C. All of the above.
D. None of the above.

Q 34. Which of the following is not a result of pushing the Outflow Valve MAN L switch to ON?

A. Displays the EICAS advisory message OUTFLOW VLV L.
B. Bypasses automatic outflow valve control and cabin altitude limiter.
C. Landing altitude information displays on the primary EICAS followed by an amber MAN.
D. Allows the left outflow valve to be positioned manually.

Q 35. With the outflow valves in the automatic mode, at what cabin altitude does the cabin altitude limiter close both outflow valves if the cabin altitude becomes excessive?

A. The cabin altitude limiter closes both outflow valves at 10,000 feet.
B. The cabin altitude limiter closes both outflow valves at 9,500 feet.
C. The cabin altitude limiter closes both outflow valves at 11,000 feet.
D. The cabin altitude limiter closes both outflow valves at 14,000 feet.

Q 36. When is the EICAS advisory message PRESS RELIEF displayed?

A. When either pressure relief valves opens with all packs on high flow and pack 2 fails to shut down.
B. One of the negative relief valves has opened or a cargo door is unlatched.
C. Cabin altitude exceeds 11,000 feet.
D. Cabin altitude is excessive.

Q 37. If one outflow valve is in Manual while the remaining valve is in the AUTO position, will both outflow valves operate?

A. Yes
B. No

Q 38. Which of the following best describes conditions when cabin pressurization automatic operation is bypassed?

A. When the Cabin Altitude AUTO SELECT is out of the AUTO position.
B. When the left outflow valve is in the manual mode.
C. When the landing altitude is in the MAN mode.
D. When both outflow valves are in the manual mode.

Q 39. In the cabin altitude controller cruise mode, maximum cabin altitude is:

A. 8,000 ft.
B. 10,000 ft.
C. 9,500 ft.
D. 14,000 ft.

Q 40. The cabin altitude limiter closes both outflow valves if cabin altitude exceeds:

A. 8,000 ft.
B. 10,000 ft.
C. 11,000 ft

Q 41. What is the range of altitude selection for landing cabin altitude (in manual mode)?

A. -1,000 feet to 12, 000 feet.
B. -1,000 feet to 14, 000 feet.
C. -2,000 feet to 10, 000 feet.
D. -2,000 feet to 12, 000 feet.

Q 42. Which of the following statements about pilot auxiliary heat is not correct?

A. Flight crew shoulder heat is provided by windshield air in the side window and pilot shoulder air diffusers.
B. Pilot foot heaters are electrical elements under the pilot foot area.
C. Flight crew shoulder heat is provided by electric elements in the side window and pilot shoulder air diffusers.
D. Shoulder heat and foot heat are available in flight.

Q 43. (Passenger/Combi) Which of the following statements is correct when the HI FLOW Switch is ON?

A. Pack air flow is controlled automatically.
B. All operating packs provide high air flow.
C. All recirculation fans are turned on.
D. All recirculation fans are turned off.

Q 44. (Passenger/Combi) Which of the following statements is correct when the HI FLOW switch is in the OFF position?

A. Pack air flow is controlled automatically.
B. Packs operate only in normal flow rate.
C. All recirculation fans are turned on.
D. The maximum cruise altitude is limited to FL 390.

Q 45. When is the EICAS advisory message BLD OVHT/PRV displayed?

A. It is displayed when a bleed air overheat is detected or the PRV fails closed.
B. It is displayed when a bleed air overheat or overpressure is detected.
C. It is displayed when an engine bleed overtemperature is detected, or the HP bleed valve is closed.
D. It is displayed when a bleed air overheat is detected or the PRV fails open.

Q 46. When the Pack Control Selector is in the NORM position, which of the following statements is not correct?

A. Pack controller A or B is automatically selected on alternate flights.
B. The controller selected is the primary controller.
C. The secondary controller is selected automatically in the event of a primary controller failure.
D. NORM is displayed in the Pack Control symbol on the ECS Synoptic Display.

Q 47. (Passenger/Combi) Which of the following statements regarding the Passenger Temperature Selector is not correct?

A. In the ALTN position, pack output temperature is fixed at 70 degrees F (21 degrees C)
B. In the ALTN position, the zone temperature controller is bypassed.
C. In the ALTN position, the zone trim air valves remain in the last position and the master trim air valve remains open.
D. When set in the AUTO range, the selector provides automatic control of the passenger zone temperatures.

Q 48. Which of the following statements regarding failure of the selected pack controller is correct?

A. With the Pack Control Selector in A or B, the other controller must be manually set to the other controller in the event the operating controller fails.
B. With the Pack Control Selector in the NORM, A or B positions, control of the pack is automatically switched to the other pack controller if the operating controller fails.
C. If the selected pack controller fails, the selector must be placed in the OFF position to reset the fault protection system before the other controller can be selected.
D. The Pack Control Selector will automatically release the position lock and return to the OFF position and the EICAS message PACK OFF will display.

Q 49. (Freighter) Which of the following statements about the flight deck fan is not correct?

A. The fan recirculates cabin air to the flight deck when no packs are operating.
B. The fan increases the flow of conditioned air to the flight deck when at least one pack is operating.
C. The fan recirculates cabin air to the electronic equipment compartment when no packs are operating.
D. The fan is disabled in flight.

Q 50. (Passenger/Combi) How is master cabin temperature set?

A. The cabin crew sets the temperature on the cabin temperature panel.
B. Maintenance personnel preset the default temperature on the ground prior to flight.
C. The flight crew sets the cabin master temperature by placing the Flight Deck Temperature Selector in the AUTO range.
D. The flight crew sets the cabin master temperature by placing the Passenger Temperature Selector in the AUTO range.

Q 51. Which of the following is not a condition that causes duct pressure, cabin altitude and rate, landing altitude, and differential pressure to automatically display on the primary EICAS?

A. Manual is selected for Landing Altitude.
B. A pack controller has failed.
C. The ENG or the ECS synoptic is selected on the secondary EICAS display.
D. Cabin altitude or cabin differential pressure is in the caution or warning range.

Q 52. Which of the following actions result from selecting the Equipment Cooling Selector to OVRD position?

A. Manually reconfigures the airplane for flight if automatic reconfiguration fails.
B. Overrides the automatic system to provide manual control
C. Provides cooling in flight, using reverse airflow provided by differential pressure.
D. Opens the FWD Outflow Valve more than the AFT Outflow Valve.

Q 53. Where is pneumatic duct pressure displayed?

A. On the primary EICAS display at all times.
B. On the captain\'s lower instrument panel.
C. On the secondary EICAS display in the lower left corner.
D. On the primary EICAS display when the ENG or ECS switches are selected on the secondary EICAS.

Q 54. Which of the following is not a condition that is required to display the EICAS advisory message >BLEED 1 OFF?

A. Engine 1 bleed air valve is closed.
B. The pressure in the number 1 air conditioning pack is too high.
C. Engine 1 is operating.
D. Engine 1 Bleed Air switch is in the OFF position.

Q 55. Which airplane systems use bleed air for normal operation?

A. Air conditioning, pressurization and windshield rain removal.
B. Leading edge flap operation, engine start and brake accumulator pressurization.
C. Cargo smoke detection, aft cargo heat and side window heat.
D. Potable water pressurization, air driven hydraulic demand pumps and thrust reversers.

Q 56. Which of the following is not a condition when bleed air is available for nacelle anti-ice operation with the Engine Bleed Air switch off?

A. When the PRV is failed open.
B. When the HP bleed valve is failed open.
C. When the start valve is not closed.
D. When the PRV is failed closed.

Q 57. What source normally supplies engine bleed air during descent and other low power setting operations?

A. Intermediate pressure bleed air.
B. High pressure bleed air.
C. The pressure regulating valve.
D. APU bleed air.

Q 58. The pressurization system schedules the cabin altitude slightly below the FMC planned landing altitude:

A. To correct for possible cabin altitude deviations.
B. To assure a small positive pressurization at touchdown.
C. False.

Q 59. When is the EICAS advisory message BLEED HP ENG displayed?

A. When the HP bleed valve fails open.
B. When the HP bleed valve fails closed.
C. When a bleed overpressure occurs.
D. When a bleed air overheat occurs.

Q 60. What source normally supplies engine bleed air during high power setting operations?

A. Intermediate pressure bleed air.
B. High pressure bleed air.
C. The pressure regulating valve.
D. APU bleed air.

Q 61. Which of the following does not display if an HP Bleed Valve fails to close when engine thrust is increased?

A. The EICAS advisory message BLEED is displayed.
B. The EICAS advisory message >BLEED OFF is displayed.
C. The engine bleed air SYS FAULT light illuminates.
D. The EICAS advisory message BLEED HP ENG is displayed.

Q 62. Which statement correctly describes what happens after closing the left and right Isolation valves?

A. Engine bleed air is not allowed to reach the hydraulic demand pumps.
B. APU bleed air is not allowed to be used.
C. All 3 air conditioning packs are able to receive bleed air from independant sources.
D. Air conditioning pack 2 is isolated from receiving bleed air from the ground source.

Q 63. What conditions cause the EICAS advisory message BLEED ISLN to be displayed?

A. Isolation Valve switch and the valve position disagree.
B. A bleed air leak is is detected along the left or right duct sections.
C. All isolation valves have malfunctioned.
D. The left and right isolation valves are closed.

Q 64. Which of the following conditions exist when the APU Bleed Air Valve Light remains illuminated amber?

A. The APU bleed air isolation valve is open and the APU Bleed Air switch is ON.
B. The EICAS advisory message BLEED ISLN is displayed and the APU bleed air isolation valve position disagrees with the APU bleed air switch.
C. The EICAS advisory message BLEED ISLN is displayed and the APU bleed air isolation valve position agrees with the APU bleed air switch.
D. The EICAS advisory message >BLEED ISLN APU is displayed and the APU bleed air isolation valve position disagrees with the APU bleed air switch.

Q 65. Due to a zone duct overheat, the master trim air valve closed and the temperature controller switched into the backup mode. Will the system reset itself automatically?

A. Yes
B. No

Q 66. (Freighter) When the Lower Lobe Cargo Air Flow Rate selector is in the FWD HI position, which of the following statements is not correct?

A. The outlet temperature of pack 3 is the same as pack 1.
B. All pack 3 conditioned air is distributed to the forward lobe cargo compartment.
C. The flight deck, upper deck, crew rest or main deck cargo temperature zone requiring the coolest temperature controls the pack outlet temperature of packs 1 and 2.
D. Pack 3 outlet temperature is controlled to maintain the lower lobe forward cargo compartment temperature set by the Cargo Temperature Selector.

Q 67. (Freighter) Which of the following best describes the results of rotating the Equipment Cooling selector to the STBY position when the forward lower lobe temperature is selected higher than 50 degrees F (10 degrees C)?
A. The equipment cooling system warms up prior to selecting NORM for flight.
B. The equipment cooling ground exhaust valve closes and the inboard exhaust valve opens to configure the system for flight.
C. The equipment cooling ground exhaust valve opens when ambient temperature is greater than 50 degrees F (10 degrees C).
D. The aft outflow valve automatically closes.

Q 68. (Freighter) Which of the following statements is correct when the HI FLOW Switch is ON and the Lower Lobe Cargo Conditioned Air Flow Rate selector is in FWD LOW?

A. Pack air flow is controlled automatically.
B. Two-thirds of pack two conditioned air is distributed to the forward lower lobe cargo compartment.
C. Two-thirds of pack three conditioned air is distributed to the forward lower lobe cargo compartment.
D. All operating packs configure to high flow.

Q 69. (Freighter) Which of the following statements regarding the Flight Deck Temperature Selector is not correct?

A. In the MAN position, pack output temperature is fixed at 75 degrees F (24 degrees C)
B. When set in the AUTO range, the backup mode inhibits automatic control of main deck zone temperature.
C. In the MAN position, the flight deck trim air valve is controlled manually.
D. When set in the AUTO range, the selector provides automatic control of the flight deck temperature.

Q 70. (Freighter) With the Flight Deck Fan Switch ON, the flight deck fan increases flow of conditioned air supplied to the flight deck:

A. Operates always when the switch is ON.
B. Correct, but will switch off at lift-off (operates on ground only).
C. On the ground but only when all the packs are off.

Q 71. During takeoff with an outside temperature of 97 degrees F (36 degrees C) the EICAS Advisory Message >TEMP CARGO A/C is displayed:

A. No action required. This condition may have been caused by loading in high ambient temperatures.
B. Switch OFF the AFT CARGO Heat (HT) Switch.
C. Initiate an immediate return.

Q 72. How can a low pressure condition in the left or right duct be identified:

A. Amber bleed air duct pressure indication on bottom of primary EICAS display.
B. Amber Isolation (ISLN) VALVE light.
C. Red flow lines on the ECS synoptic display.

Q 73. (Freighter) For which cargo compartments can the temperature be set at the flight deck?

A. FWD and AFT main deck and lower lobe cargo compartments.
B. FWD lower lobe cargo compartment only.
C. Bulk cargo compartment.

Q 74. (Freighter) The flow rate for the lower lobe cargo compartments can be selected at the:

A. Overhead Panel at the flight deck.
B. Overhead Maintenance Panel at the flight deck.
C. Respective lower lobe cargo compartments.

Q 75. (Freighter) The target temperatures for the lower lobe cargo compartments can be selected at:

A. The ECS Panel at the Flight deck.
B. The respective lower lobe cargo compartments.
C. The forward lower lobe cargo compartment only.

Q 76. Why is the AFT Cargo Heat (HT) Switch left OFF until after engine start?

A. To prevent load shedding during engine start.
B. To prevent high temperature in the AFT Cargo compartment.
C. To increase bleed air available for engine start.

Q 77. With the Gasper Switch ON, the gasper system:

A. Supplies conditioned air to the individual eyeball outlets.
B. Supplies recirculated air drawn from the upper passenger cabin area.
C. Activates all recirculation fans

Q 78. With the Recirculation (RECIRC) Fans Switch ON, the recirculation fans:

A. Will always be on.
B. Are controlled automatically.
C. Will automatically switch off on the ground during high ambient temperatures.
With the Pack High (HI) FLOW Switch ON, all packs will be in high flow mode.
D. Sometimes, depending on the Cargo Conditioned Air Flow Rate selector setting
E. Always.
F. Only during cruise.

Q 79. When does the aircraft normally depressurize?

A. At TOD (Top Of Descent)
B. At touchdown
C. During taxi in
D. During descent

Q 80. Handling a BLD DUCT LEAK C EICAS alert results in switching the TRIM AIR Switch to OFF. With the Passenger Temperature (PASS TEMP) Selector in AUTO:

A. The pack outlet temperature is regulated to provide an average passenger temperature from 18°C to 29°C as selected by the Passenger Temperature (PASS TEMP) selector.
B. The temperature of the passenger cabin is regulated by means of trim air between 18°C and 29°C.
C. The pack outlet temperature is automatically regulated to achieve an average passenger cabin temperature of 18°C.

Q 81. Does manual input of landing field elevation override FMC inputs?

A. Yes
B. No

Q 82. What does pushing the Landing Altitude Selector to OFF do?

A. Landing altitude must be manually set in.
B. Landing altitude information is displayed on EICAS followed by an amber MAN.
C. Landing altitude information is displayed on EICAS followed by a white AUTO.

Q 83. When does the CABIN ALTITUDE warning message and siren rearm?

A. When the cabin altitude descends below 10,000 feet.
B. When the cabin altitude descends below 9,500 feet.
C. When the cabin altitude descends below 9,000 feet.
D. When the cabin altitude descends below 8,500 feet.

Q 84. What automatic protective feature acts to help relieve excessive pressure?

A. Pack 1 shuts down.
B. Pack 2 shuts down.
C. Pack 3 shuts down.
D. Pack 1 & 2 shut down.

Q 85. How do you reset the pack in the event of a shutdown of pack 2 due to an overpressurization?

A. Manually when the cabin pressure differential decreases below 8.5 psi.
B. Automatically when either cabin pressure relief valve closes.
C. Automatically when both cabin pressure relief valves close.
D. All of the above.

Q 86. What is provided by the NORM position of the equipment cooling selector (two engines running)?

A. Cooling air exhausted into forward cargo compartment.
B. Ground exhaust valve opens.
C. Both are correct.

Q 87. When does the zone SYS FAULT light illuminate?

A. Zone duct overheat.
B. Zone temperature controller fault.
C. Master trim air valve has failed closed.
D. All of the above.

Q 88. Is air conditioning system pack control, cabin air recirculation, fault protection and overheat protection operated automatically or manually?

A. Normally automatically.
B. Normally manually.
C. Pack control, cabin air recirculation are operated manually. Fault protection and overheat protection are manual.
D. Pack control, cabin air recirculation operated automatically. Fault protection and overheat protection are manual.

Q 89. How many pack controllers control each of the three packs?

A. Two: Each controller has three channels, one for each pack.
B. Three: Each controller has two channels.
C. Four
D. None of the above.

Q 90. How much air pressure is required for the pack valve to open?

A. 10 psi.
B. 12 psi.
C. 14 psi.
D. 15 psi.

Q 91. What will generate a PACK 1, 2, 3 EICAS message and system Fault light?

A. A pack overheat.
B. A fault in the pack controller.
C. Either cabin pressure relief valve is activated and pack 2 shuts down.
D. All of the above.

http://www.smartcockpit.com/plane/boeing/B747/
avatar
Admin
Admin

Posts : 102
Info Rating : 1
Join date : 2009-11-30
Location : Melbourne, Australia

View user profile http://aviationtheory.forumotion.net

Back to top Go down

View previous topic View next topic Back to top

- Similar topics

 
Permissions in this forum:
You cannot reply to topics in this forum