73N Air Systems

Front 1

"What does the BLEED TRIP OFF light indicate?"

Back 1

"Excessive engine bleed air temperature or pressure. Related engine bleed air valve closes automatically and must be reset to function."

Front 2

"How do you regulate cabin temperature?"

Back 2

"Putting selector in AUTO provides automatic temperature control for the associated zone, while rotating toward C (cool) or W (warm) manually sets the desired temperature."

Front 3

"If you rotate the cabin temperature selector to OFF, what happens?"

Back 3

"Associated trim modulating valve closes."

Front 4

"Placing the ISOLATION VALVE switch to CLOSE does what?"

Back 4

"Closes isolation valve."

Front 5

"What will be the position of the Isolation valve if the ISOLATION VALVE switch is placed in AUTO and either engine BLEED air, or AC PACK switch is positioned to OFF?"

Back 5

"OPEN"

Front 6

"What will be the position of the Isolation valve if the ISOLATION VALVE switch is placed in AUTO, both engine BLEED air switches are ON, and both PACK switches are AUTO or HIGH?"

Back 6

"CLOSED"

Front 7

"What will be the position of the Isolation valve if the ISOLATION VALVE switch is placed in AUTO, engine 1 BLEED air switch is in ON, engine 2 BLEED air switch is OFF, and both PACK switches are AUTO?"

Back 7

"OPEN"

Front 8

"What is the position of the isolation valve if any of the four “corner switches” are off, and the ISOLATION VALVE is in AUTO?"

Back 8

"OPEN"

Front 9

"What does pushing the TRIP RESET switch do?"

Back 9

"If fault correction is corrected: 1) Resets BLEED TRIP OFF, PACK, and ZONE TEMP lights, 2) Opens related bleed valve or pack valve, 3) lights remain illuminated until reset"

Front 10

"How is an alert provided if an overtemperature occurs in the E&E bay?"

Back 10

"Crew call horn in nose wheel well"

Front 11

"How is pressurization system controlled with Pressurization mode swith in AUTO?"

Back 11

"Automatically"

Front 12

"How is pressurization system controlled with Pressurization mode swith in ALTN?"

Back 12

"Using the ALTN controller"

Front 13

"How is pressurization system controlled with Pressurization mode swith in MAN?"

Back 13

"Manually by outflow valve switch – both auto controllers are bypassed"

Front 14

"Putting the pressurization system in ______ bypasses both automatic controllers."

Back 14

"MAN"

Front 15

"At what altitude will the cabin altitude warning horn sound?"

Back 15

"10,000 feet"

Front 16

"How do you silence the cabin altitude warning sound?"

Back 16

"Push the ALT HORN CUTOUT switch"

Front 17

"What does an illuminated left WING–BODY OVERHEAT light indicate?"

Back 17

"Overheat from bleed air duct leak in left engine strut, left inboard wing leading edge, left air conditioning bay, keel beam, or APU bleed air duct."

Front 18

"What does an illuminated right WING–BODY OVERHEAT light indicate?"

Back 18

"Overheat from bleed air duct leak in right engine strut, right inboard wing leading edge, or right air conditioning bay."

Front 19

"An overheat in the keel beam or APU bleed air duct will illuminate what light?"

Back 19

"Left WING–BODY OVERHEAT"

Front 20

"Selecting SUPPLY DUCT on the AIR TEMP Source Selector will do what?"

Back 20

"Selects and displays appropriate zone supply duct temperature"

Front 21

"Selecting PASS CAB on the AIR TEMP Source Selector will do what?"

Back 21

"Selects and displays forward or aft passenger cabin temperature"

Front 22

"Selecting PACK on the AIR TEMP Source Selector will do what?"

Back 22

"Selects and displays left or right Pack temperatures"

Front 23

"What has happened if the left or right PACK light illuminates?"

Back 23

"Pack trip off or failure of both primary and standby pack controls for the associated pack."

Front 24

"During MASTER CAUTION recall, illumination of the left PACK light indicates what?"

Back 24

"Failure of either the primary or standby pack control. Light will extinguish when MASTER CAUTION is reset."

Front 25

"The CONT CAB light illuminates to indicate what?"

Back 25

"Duct temperature overheat or failure of the flight deck primary and standby temperature control."

Front 26

"The FWD CAB or AFT CAB light illuminates to indicate:"

Back 26

"Duct temperature overheat"

Front 27

"During MASTER CAUTION recall, CONT CAB indicates:"

Back 27

"Failure of the flight deck primary or standby temperature control"

Front 28

"How can you check if only the primary or the standby temperature control in the flight deck have failed?"

Back 28

"Perform a MASTER CAUTION reset. If CONT CAB illuminates, one of the controls has failed."

Front 29

"Explain the meaning of an illuminated OFF SCHED DESCENT light:"

Back 29

"The airplane has descended before reaching the planned cruise altitude set in the FLT ALT indicator."

Front 30

"If you descend before reaching the planned cruise altitude set in the FLT ALT indicator, what will happen?"

Back 30

"OFF SCHED DESCENT light will illuminate."

Front 31

"If a flight is aborted in climb and returns to the takeoff airport, will the OFF SCHED DESCENT light illuminate?"

Back 31

"No, unless the FLT ALT indicator is changed."

Front 32

"Turning the TRIM AIR switch to OFF or ON regulates which control?"

Back 32

"The trim air pressure regulating and shutoff valve"

Front 33

"What does the RECIRC FAN do?"

Back 33

"Reduces air conditioning system pack load and engine bleed air demand."

Front 34

"The RECIRC FAN draws air from the[xxxxx] and [xxxxx] to the [xxxxx], where it is filtered and re–circulated to the [xxxxx]."

Back 34

"Passenger cabin, electrical equipment bay, forward cargo bay, Mix manifold"

Front 35

"An illuminated Equipment Cooling Supply (Exhaust) light indicates:"

Back 35

"No airflow from selected cooling supply (exhaust) fan."

Front 36

"What indicates that you have configured the air panel in a way that it would be possible to back pressure the APU?"

Back 36

"DUAL BLEED Light"

Front 37

"The DUAL BLEED light observes the APU Bleed [xxxxx] and the Engine Bleed Air [xxxxx]."

Back 37

"Valve, Switches"

Front 38

"Turning the engine and/or APU BLEED Air switches ON will open the associated bleed air valves if [xxxxx]."

Back 38

"The associated engine/APU is operating"

Front 39

"To command maximum flow rate to the pack on the ground, you must:"

Back 39

"Turn PACK and APU BLEED switch ON."