AS 411 Exam 4
The maximum altitude the APU bleed may be used in flight is________
17,000 feet.
The APU is capable of supplying bleed air for
2 packs 1 in the air
Radio altitude is shown when the aircraft is below
2,500 ft AGL
A momentary tone sounds when deviating by _______ from the selected altitude
200 ft
The digital flight data recorder maintains a record of the last _____ hours of operation
25hrs
The 737 has _____ Air Data Modules
4
How many heated pitot probes are on this B-737NG?
5
The 737 has ________ pitot probes
5
Bleed air comes from the _____ and ______ compressor stages?
5th and 9th
The 737 has ________ static ports
6
The cabin of a B737 can be pressurized up to a cabin altitude of ____________.
8000ft
What does the pressurization system use to control pressurization and ventilation?
An outflow and overboard exhaust valve
Differences between the L and R duct pressure indicators
Are considered normal, as long as the cabin can be pressurized
The wing anti ice switch will move to the OFF position without crew action when:
At lift off when the air ground sensor goes to the air mode
In ALTN mode which of the following is true:
Automatic pressurization control; the alternate mode of operation; uses a DC motor
The APU bleed air valve closes
Automatically when the APU is shut down or when the pilot selects the APU bleed air switch to off
Anti Ice valves are ___________ in transit and _________ when OPEN.
Bright blue and dim blue
Which of the following WILL NOT cause a takeoff warning?
Cockpit door not locked.
Engine bleed air valves are
DC activated and pressure operated
On the ground and at low power settings the cabin is depressurized by
Driving the outflow valve to the full open position
In normal operation the right pack uses bleed air from
Engine n2
Alerts from the GPWS system are based on
Estimated time to impact
An amber COWL ANTI-ICE light illuminates due to:
Excessive pressure
A single pack in high flow can maintain temperatures and pressurization up to
FL410
All flight deck windows are heated.
False
If a flight has to return to the airport immediately after takeoff the MAN light will illuminate indicating that the aircraft failed to reach the preset cruising altitude
False
If acted on immediately, a ground proximity alert guarantees terrain clearance
False
In flight the overboard exhaust valve is the exit for the majority of the air and the outflow valve is normally closed.
False
Windshear alerts are available during cruise
False
Which of the following is not a function of the bleed air system?
Fuel tank pressurization
In MAN mode which of the following is true:
Manual control of the system using a DC motor
The vertical stab and horizontal stab have anti ice from:
Not APU, or Right or the Left Engine
The cabin begins pressurizing
On the ground at high power settings
The overboard exhaust valve is open to allow warm air from the E & E compartment to be discharged overboard, in what conditions?
On the ground or in flight with low differential pressure
Mode Control of the TCAS is set to TA/RA; however, can be set to TA ONLY when:
Parallel Approach AND Busy airports AND Near other airplane such as VFR conditions
Rain removal for the forward windows, R1 and L1 consist of wipers and:
Permanent rain repellent
In the air conditioning system what cools the bleed air in the heat exchangers?
Ram air
Indications that require immediate crew attention are
Red
Voice warnings are not used for
Stall warnings
During slow flight with the flaps partially extended the ram air doors move to the full open position and
The RAM AIR DOOR FULL OPEN light will illuminate
The DUAL BLEED light will illuminate when
The bleed air system is configured such that it would be possible to put backpressure on the APU
If an overheat is detected in the cooling cycle which of the following will occur
The pack valve will close AND The PACK TRIP OFF light will illuminate
If during cruise flight, both air conditioning pack switches are in AUTO and one pack fails what will occur?
The remaining pack will switch to high air flow
TCAS uses ___________ of possible conflicting traffic.
Transponders
A small amount of air is exhausted through toilet and galley vents, and miscellaneous fixed vents and seal leakage.
True
An external air cart can supply air for engine start or air conditioning
True
Bleed air can be supplied to the aircraft via the APU, an external air cart or the engines.
True
Continuous ignition is required by most airlines policy prior to engine or wing anti ice activation.
True
Each pitot air data module is connected to its on-side pitot probe
True
It is possible to operate two packs from one engine bleed air source but the manual states it should not be done.
True
Static ports are not heated.
True
The Head-Up Display (HUD) can be used with the autopilot or when the aircraft is being hand flown
True
The left and right wings are NOT heated, inboard of engines.
True
The pilots can turn on the recirculation fans directly.
True
The recirculation fan reduces the load on the packs and bleed air demand.
True
Primary engine indications are on the _______ DU
Upper
The Mach/Airspeed warning clacker will sound any time
Vmo/Mmo is exceeded
The isolation valve
Will be closed during normal operations (both packs operating, both engine bleeds on)
The bleed air valves protect the system
by automatically closing when an over pressure or over temperature is detected
