737 Systems Exam Flashcards
During descent, when is the pressurization descent mode activated?
0.25 PSI below the selected FLT ALT
If one of the radio altimeters has failed, what is expected to occur during a Precision Approach?
The autopilot will disconnect two seconds after LOC and GS capture.
If the nose gear steering lockout pin is not installed for pushback or towing, which hydraulic system must be switched off?
System A Hydraulic Pumps.
Prior to returning to the oil tank, engine oil passes through:
The scavenge filter, and the main engine oil cooler.
What does illumination of the STANDBY POWER OFF lights indicate?
The AC Standby Bus is not powered.
What indications in the cabin occur when the ATTEND call switch is pressed in the flight deck?
Two-tone chime and both pink master call lights illuminated.
At what hydraulic quantity will the RF indication display? On the ground or in the air?
Below 76%, on the ground.
Prior to what speed can the autobrakes be selected after touchdown?
30 kt.
At Flaps 15, what position are the leading edge devices in?
Full Extend.
The FMC Alerting Message INSUFFICIENT FUEL is triggered when…
You will have less than 900 Kg of fuel at your destination.
When will the IAS DISAGREE light be displayed?
When both speed tapes disagree by more than 5kt for more than 5 seconds.
For landing, what is maximum fuel imbalance between No 1 and No 2 main tanks?
453 Kg.
How far ahead of the aircraft will Windshear activate the Predictive Windshear Warning?
Up to 1.5 NM.
With the fuel pumps operating, where does the APU draw fuel from?
Left side of the fuel manifold.
If the fuel pumps are not operating, where does the APU draw fuel from?
The No. 1 Tank.
In normal conditions, what powers the RIGHT IRS?
AC Transfer Bus 2.
How long will the right IRS be powered by the Switched Hot Battery Bus, in an emergency?
5 minutes
If a wet start is detected on the ground, how long after the start lever is moved to IDLE will the EEC automatically turn off ignition and shut off fuel to the engine?
15 seconds.
When is rudder pedal steering deactivated?
When the nose gear strut is extending.
In what mode(s) and what components does the EEC provide overspeed protection for?
N1 and N2, in NORMAL mode only.
Below what RA do the Predictive Windshear Alerts become available?
1200ft RA.
In which fuel tanks are bypass valves located?
Both main tanks.
If the thrust levers are advanced after touchdown, how long until the Autobrakes disarm?
3 seconds.
When positioning the APU switch to OFF, how long is the automatic shutdown delay?
60 seconds.
