B737 - DAY 5 - Pneumatics, Air Conditioning
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B737 Typerating
- 1.What are the sources of engine bleed air?
- A.
4th compressor section
- B.
5th and 9th stage of compressor section.
- C.
5th compressor section
- D.
9th compressor section
- 2.With both engine bleed switches ON, pack switches selected to AUTO, and the isolation valve switch in AUTO, what position will the isolation valve be in?
- A.
Closed
- B.
On
- 3.With the isolation valve switch in the AUTO position, what selection either pack switch will open the isolation valve?
- A.
OFF
- B.
Auto
- C.
ON
- 4.Which valve controls the associated pneumatic system pressure?
- A.
The engine bleed valve
- B.
APU bleed valve
- C.
Mix Manifold
- D.
X-bleed valve
- 5.When will the DUAL BLEED light illuminate?
- A.
If both engine bleeds are on
- B.
N°2 engine bleed ON and APU bleed ON.
- C.
N°1 engine bleed ON and APU bleed ON.
- D.
N°1 engine bleed ON and APU bleed OFF.
- 6.When will Engine BLEED TRIP OFF light illuminate?
- A.
When the engine bleed temperature exceeds a pre-determined limit
- B.
When EGT exceeds a pre-determined limit
- C.
When the engine bleed pressure exceeds a pre-determined limit
- D.
When the engine bleed Temperature or pressure exceeds a pre-determined limit
- 7.The TRIP RESET on the 737 800 will reset 3 situations which are?
- A.
BLEED TRIP OFF, PACK TRIP OFF and ZONE TEMP lights
- B.
Exessive EGT, pressure and temperature
- C.
BLEED TRIP OFF, DUAL BLEED and ZONE TEMP lights
- D.
Exessive temp on both engines and APU
- 8.A leak of hot air from the APU bleed duct will cause the illumination of which light?
- A.
Left WING BODY OVERHEAT
- B.
Right WING BODY OVERHEAT
- C.
OVERHEAT light
- D.
FAULT light
- 9.Before Engine Start, what Bleed Duct Pressure should be indicated?
- A.
It is an on demand supply, however it does read approx. 15 psi
- B.
It is an on demand supply, however it does read approx 30 psi
- C.
It is an on demand supply, however it does read approx 25 psi
- D.
It is an on demand supply, however it does read approx 45 psi
- 10.Illumination of the right WING-BODY OVERHEAT light indicates that an overheat has occurred in which duct?
- A.
Left engine strut, Left inboard wing leading edge, or Left side air conditioning bay.
- B.
Left wing tank
- C.
Right engine strut, right inboard wing leading edge, or right side air conditioning bay.
- D.
Right wing tank
- 11.Automatic switching to the APU high flow mode occurs when the APU bleed switch is ON, either pack switch is set to ---------, and the aircraft is positioned ------------?
- A.
LOW, on the ground
- B.
HIGH, in flight
- C.
HIGH, on the ground
- D.
Low, in flight
- 12.When are the RAM DOOR FULL OPEN lights illuminated?
- A.
On the ground or in flight
- B.
On the ground or in flight with the flaps extended
- C.
In flight with flaps extended
- D.
In flight with gear down
- 13.What will be the position of the trip air modulating valve after the associated ZONE TEMP light is illuminated?
- A.
Closed
- B.
Open
- 14.In flight, with flaps retracted, both pack switches in AUTO, but only one pack operating, what flow mode will be in?
- A.
OFF mode
- B.
It will schedule to ON flow mode
- C.
It will schedule to AUTO mode
- D.
It will schedule to high flow mode
- 15.What causes a PACK light to illuminate?
- A.
Failure of both primary and standby pack controls, or the overheat in the cooling cycle. The associated pack valve closes.
- B.
Both packs in operation
- C.
A fault in with either on or both packs
- D.
Failure of both primary and standby pack controls.
- 16.On the ground, with the APU bleed switch ON, if either pack switch is set to HIGH, the APU will which mode?
- A.
High flow
- B.
Normal flow
- C.
Auto flow
- D.
OFF
- 17.Conditioned air from the Left Pack is supplied to?
- A.
The Mix Manifold
- B.
The mix Manifold and the Cabin
- C.
The Mix Manifold and the Flight Deck
- D.
The Cabin
- 18.In flight, with the recirculation fans in the AUTO position (##):
- A.
The right recirculation fan operates if both packs are operating unless both PACK switches are selected to HIGH
- B.
Both fans are operating normally.
- C.
Both fans are operating in HIGH mode
- D.
The left recirculation fan operates if both packs are operating unless both PACK switches are selected to HIGH
- 19.In the AUTO mode of operation, when does the pressurization start (##)?
- A.
When AUTO button is pressed.
- B.
When TOGA buttons are pressed
- C.
When aircraft gets airborne
- D.
On the ground when the thrusts levers are advanced to set take-off power (when both N1s are greater than 60% & both N2s are greater than 89% for 1.5 seconds)
- 20.With the pressurization mode selector in AUTO, what indicates a failure of the selected controller?
- A.
FAULT light illuminates.
- B.
MASTER CAUTION and FAULT lights illuminate.
- C.
MASTER CAUTION and ALTN lights illuminate.
- D.
The AUTO FAIL and ALTN lights illuminate.
- 21.Below 28 000ft and if AUTO mode, the pressurization system controller schedules a constant When does the OFF SCHED DESCENT light illuminate?cabin altitude during the cruise, based on what differential pressure?
- A.
7.8 psi
- B.
7.45 psi
- C.
8.35 psi
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