MQF Flashcards
What system is used to open the forward cargo baggage door?
Manual mechanical
The designation of the engine on the 737 – NG is CFM international CFM 56–7B26
True
With the emergency light switch in the armed position under normal power, what condition will cause the lights to illuminate automatically?
Loss of #1 DC bus or AC power is turned off
In-flight, when the gear horn sounds, under what conditions can it be silenced?
Flaps 1 – 10, thrust levers at any position
What warning inhibits are available in the GPWS system?
Flaps config, gear config and terrain
How are the bleed valves operated?
Electrically controlled and pneumatically operated
A reactive windshear alert inhibits all others
True
Can the engines be started with the engine bleed valve switches in the off position?
Yes
With the loss of system A hydraulic pressure, nose wheel steering:
Is manually selectable to system B hydraulics
What causes a bleed trip?
Both A and B
Excessive bleed pressure and temp
How many fuel measuring sticks are used to check the center tank quantity?
4
What does a duct overheat light indicate?
Bleed air temperature in related duct exceeds limits
What is the function of the EEC?
Both A and B
- N1 is used by the EEC to set thrust in three control modes: normal and two alternates
- EEC uses thrust Lever inputs to automatically control forward and reverse thrust
Where is the engine oil pressure measured?
On the outlet side of the engine driven oil pump, prior to engine lubrication
What is the purpose of the isolation valve?
Allows separation or connection of the left and right pneumatic systems when required
What are the in Flight operating limits of the APU?
All of the above
When should the starter automatically cut out?
56% N2
What are the power sources of igniters?
Left, respective AC transfer bus and Right, standby AC bus
Will the APU fire detection system automatically discharge the fire bottle?
No, it only shuts the APU down
What requirements must be met before reverse is available?
All of the above and reverse selected
- Fire switch down
- Either radio altimeter sensing less than 10 feet, or the air\ground sensor in the ground mode
- Hydraulic pressure and battery power available
What is the purpose of the landing gear transfer unit?
Allows landing gear retraction in the event of a number one engine failure
What are the temperature limits of the APU?
Maximum limits are not displayed but are set by the ECU
What are the electrical sources for the 737?
All of the above
- Two engine driven generators
- APU
- Ground Powerr
- battery for standby bus
How are the primary flight controls normally powered?
By hydraulic systems A & B
How could the standby rudder be activated manually?
Placing either or both system A and B flight control switches to standby rudder
Under what conditions would an IDG disconnect (either manually or automatically) be necessary when low oil is sensed by a DRIVE amber caution light?
Both A and B
- High oil temperature
- IDG failure
Can the standby hydraulic pump be activated by any additional method?
Yes, by selecting the alternate flap master switch to on
Which buses supply the essential loads?
The standby buses
What is the minimum fuel to operate the electric hydraulic pumps on the ground?
1675 pounds in each wing tank
Why is there a minimum fuel requirement to operate the electric hydraulic pumps?
The A and B system heat exchangers are located in the main tanks
What are the primary and the backup sources of power for the transfer buses ?
Primary: respective IDG
Backup: opposite XFER bus
At what degree of control wheel displacement does Flight spoiler deployment begin to assist the ailerons in roll control?
10°
Does aileron trim physically effect control wheel position?
Yes. The control wheel position directly indicates the amount of aileron trim applied.
What is the function of a TR?
Convert 115 V AC power to 28 V DC power
What is the voltage output of the TR’s?
28 volts
If the trailing edge flaps are extended by the alternate method, what flap protections are available
None
What powers the trailing edge flaps down with the alternate flaps system selected?
An electric motor
When is the automatic standby power feature available?
Always. It functions the same on the ground as in the air.
Which of the following is not on the hot battery bus?
Standby Runner shut off valve
If the system B electric pump or lines developed a leak what would the indications be?
The quantity indication would go to zero. But sufficient fluid would be available to operate the power transfer unit.
If you lost all standby system hydraulic fluid, would there be a cockpit indication?
Yes. The standby low quantity light would be illuminated and system B reservoir would read one half and RFL
What activates the standby hydraulic pump?
All of the above and activation of the FFM
What is the power source for APU start?
A and B
- AC power if available
- Main battery only if AC not available
Will the autobrake disarm light normally illuminate after take off with RTO selected?
No
When selected, at what speed is RTO available?
Above 90 knots
What is the maximum airspeed for retracting the landing gear?
235 knots
When is the fuel heated?
The fuel is constantly heated by a fuel\oil heat exchanger
When retracting the highlift devices using the alternate method will the LED’s return to the retracted position?
No
What are the two sources of power for the ground service bus?
Both A and C
- Transfer bus one
- Ground power via the ground service switch on the F\A panel
When are the ground service buses powered?
When external power is available and the ground service switch is on, or both transfer buses are powered
When is the latest you should wait for oil pressure to be indicated?
By idle RPM
The APU has an overheat warning system
False
Must the battery switch be on to operate the APU?
Yes, on the ground and in Flight
Can the APU be started without the battery?
No, the battery is required
What actuates the thrust reversers?
Hydraulic pressure
What do the start levers control?
Both A and C
- fuel
- ignition
How long should you operate the APU before using it as a bleed air source?
1 minute
The EGPWS gets position information from:
GPS position
When are the aux and main batteries tied together?
When the batteries are the only source of power (except during APU start)
What is the primary source for DC power?
Three transformer rectifiers (TRs) and a ground service TR
What is the maximum EGT allowed during engine start?
Not given, but the APU start will automatically terminate in an exceedance
What would indicate an APU hung start?
The start is automatically terminated
How high may the APU be started?
Up to the service ceiling of the aircraft
What is a good test indication of the TCAS?
A and B
- Four traffic symbols on the NDs
- An aural message that the test is okay
Where did the air conditioning packs get their air?
All of the above
How is the APU compartment and exhaust system cold?
Air enters the cooling inlet above the exhaust opening
If the APU EGT rises above acceptable limits during engine start:
It will reduce the electrical output to maintain bleed air pressure
What is the primary source of cockpit air?
The left pack, upstream of the mix manifold
What would be your indication with a TR3 failure?
0 V & amps. TR 3 output is read at the TR.
What is the power source for TR3?
XFER BUS #2
How could you verify that TR1 had failed?
TR1 amps 0 and volts normal
If the DC meter switch is placed to the standby power position, what would you be able to read?
DC standby bus voltage only
Normally, what would you expect to happen if the DC bus number 1 or Transfer bus number 1 failed?
The battery bus would power the standby DC bus and the standby AC bus through the static inverter
What are the normal and backup power sources for the standby AC and DC buses?
All of the above