General Oral questions Flashcards
During start, when is an engine considered stable?
When the red EGT start limit line goes away
-Usually 62-67 N2
When is approach idle selected?
In flight:
-Nacelle anti ice ON
-Flaps in a landing position
-Continuous ignition switch ON
On the ground:
-During reverse thrust operation
-Maintained 5 seconds after touchdown
What powers the IRUs?
AC bus 3, 1, 2 = L, C, R
DC= APU hot battery bus
-Center IRU operates on DC for 5 min then shuts down
-30min for L and R
Memory jogger: APU selector is right below IRUs on overhead panel
How long should you wait to turn off the battery switch after the APU selector is rotated to OFF?
2 minutes (To ensure fire detection)
What is powered when the airplane is cold and dark?
Main hot battery bus and APU hot battery bus
FIRE PROTECTION
OUTFLOW VALVES
What is powered when you go from cold and dark to battery switch ON?
MAIN and APU battery busses come on in addition to the hot busses.
FIRE DETECTION now comes on
ABILITY TO START APU
You were cold and dark, turned the battery switch ON, and now just turned the STANDBY selector to AUTO. What is powered?
Now the MAIN STANDBY BUS and APU STANDBY BUS
YOU GET CAPTAINS SCREENS AND CDU
When would you get a DRIVE light on an IDG drive disconnect switch?
-Excessively high IDG oil temp (Auto disconnect)
-Low IDG oil pressure
-Uncorrectable generator frequency fault
When would you get a SYS FAULT light on the hydraulic panel?
-Low hydraulic pressure
-Low hydraulic fluid quantity
-Excessively high hydraulic fluid temperature
When does a hydraulic demand pump run when in AUTO?
-When respective EDP pressure low
-When respective fuel selector is cutoff
-1&4 run on the ground during flap transit past 1 (stop once position reached), and in the air continuously once flaps past 1
Do the demand pumps stay on while on the ground?
No. There is an overheat possibility
What powers the #4 hydraulic AUX pump?
Ground handling bus
The #4 hydraulic AUX pump shuts down automatically___
When engine 4 EDP pressurizes
If you could only have 1 hydraulic system, what would it be? Why?
2
Because you have alternate brakes, BUT ALSO stab trim. (If you chose #4, you wouldn’t have stab trim. Hard to land a plane without stab trim)
What hydraulic system powers what autopilots?
3, 1, 2 = L, C, R
Which demand pumps are electric and which are pneumatic?
Electric: 2 and 3
Pneumatic: 1 and 4
Name some items on hydraulic system 1.
-Inboard TE flaps
-Center Autopilot
-Nose gear steering and actuation (retraction/extension)
-Body gear steering and actuation (Retraction/extension)
Name some systems on hydraulic system 2.
-Right autopilot
-Lower yaw damper
-Lower rudder
-Stab trim
Name some systems on hydraulic system 2.
-Right autopilot
-Lower yaw damper
-Lower rudder
Name some systems on hydraulic system 3.
-Left autopilot
-Stab trim
-Upper rudder
-Upper yaw damper
Name some systems on hydraulic system 4.
-Normal brakes
-Outboard TE flaps
-Wing gear actuation (extension/retraction)
When do the outboard ailerons lockout?
Above 238 knots
What drives the leading edge flaps?
Bleed air (normal)
Electrically (secondary and alternate)
Do you get flap load relief in secondary or alternate flap modes?
No load relief