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
When do you get flap asymmetry protection?
Primary and secondary mode
There are 3 FCUs (flap control units). What modes use FCUs?
Primary and secondary
(Alternate does not use FCUs)
During alternate flap mode, how do the flaps operate? What is the maximum flap setting?
They all move at the same time EXCEPT for retraction. During retraction, the leading edge only retract after all of the trailing edge flaps are retracted.
TE THEN LE
Max flap setting is 25
When would the flaps automatically switch to secondary mode?
Any flap group fails to move to the commanded position. The change occors for symmetrical flap groups on both wings
How many dual loop smoke detectors in the lower lobes?
FWD: 4
AFT: 4
How many fire bottles for the lower lobes? How long do they provide protection?
4 total
210 minutes of protection
How many dual-loop smoke detectors are on the main deck?
16
They are technically particle sensors and not detectors
-Linda said so?
Where is the APU fire panel located outside?
Right body gear well
What is stable N2 after engine start?
62-67%
Do you have hot, hung, and no EGT rise protection during a manual start?
No
When is continuous ignition automatically selected on?
-Trailing edge flaps are out of up
-NAI on
-Engine flame out
Can you get a fuel imbalance message on the ground?
No, only in flight
When you press a jettison fuel switch, what override/jettison pumps activate?
All in tanks that have fuel (switch must be on)
During jettison, if you are on channel A, and it fails, does it switch to B?
No
How does the fuel flow during jettison?
Fuel is jettisoned from 2 and 3. Main 1 and 4 transfer valves open when 2 and 3 are below 9,072 KGs and feed 2 and 3 where the fuel is jettisoned from. Also CWT jettisons fuel using its own pumps if there is fuel in the tank
How many cabin altitude controllers?
2 (A and B)
Normally, pressurization is fully automatic. What landing field elevation would require you to manually enter the LFE?
Any field above 8,000’
If no cruise altitude and landing field elevation is in the FMC, what are the defaults that the cabin pressure controller uses?
Cruise alt: 39,000
Landing field: 2,000’
If the cabin altitude gets to 11,000’, the outflow valves close to help limit the cabin altitude. How does the aircraft protect itself against overpressure?
Pack 2 is shut off
Overpressure relief valve opens
Where is the overpressure relief valve located?
Forward of the left wing root fairing
Where are negative pressure relief valves located?
Side cargo door, forward cargo door, aft cargo door
What are the available temperature ranges for all of the zones?
-Flight deck: 18-29C
-Upper deck/crew rest: +/- 6C from flight deck setting
-Main deck and lower lobes: 4-29C
When would you see a SYS FAULT light on the ZONE RST switch?
-Temp zone overheat or fault
-Master trim air failed closed or is off
-Trim air valve is closed and pack air continues to flow (This means you are in the backup mode)
When does the equipment cooling system turn to flight mode? What do you do if it doesn’t?
-When at least 1 engine is running on each wing
-If it does not automatically configure, go to STBY mode to force it into flight mode
Normally “flight mode” for equipment cooling is to have EE air blasted into the forward lower lobe. What if you selected the temperature to be less than 10C in the forward lobe in flight?
The equipment cooling would go into closed loop mode.
What would cause a SYS FAULT light on the bleed system?
-Bleed overheat
-Bleed overpressure
-HP valve open when commanded closed
-PRV open when commanded closed
What are some items on the left bleed duct?
-Pack 1
-Left wing anti ice
-Hydraulic demand pump 1
-LE flaps (left wing)
-Hydraulic reservoir pressure 1 and 2
What are some items on the right bleed duct?
-Pack 3
-Right wing anti ice
-Hydraulic demand pump 4
-LE flaps (right wing)
-Hydraulic reservoir pressure 3 and 4
What are some items on the center bleed duct?
-Trim air
-Aft cargo heat
-Water pressure
-Smoke detector pressure
-Pack 2
-HP external cart
-APU bleed
What would a SYS FAULT light indicate on the PACK RST switch?
-PACK OVERHEAT or other system fault
(May flash if PTC channels switch after landing or manually)
When in the NORM position, what does a pack do?
It alternates every flight (after landing) between PTC A and B
If you manually select PTC A, and it fails, does it switch to B automatically?
Yes, and same the other way around
When do the packs automatically go into high flow?
-Whenever not in FMC cruise
-Whenever LLCCAFR switch in LOW BOTH or any HIGH mode
NOTE: if you level off lower than FMC cruise packs will stay in High flow until you change your cruise alt in the box
What happens when you select the LLCCAFR switch LOW FWD?
2/3 of pack 3 air to FWD compartment (Pack 3 HI flow)
What happens when you select the LLCCAFR switch to LOW AFT?
2/3 of pack 2 air to AFT compartment (Pack 2 HI flow)
What happens when you select the LLCCAFR switch to LOW BOTH?
2/3 of pack 3 air to FWD
2/3 of pack 2 air to AFT
ALL PACKS HIGH FLOW
What happens when you select the LLCCAFR switch to HIGH FWD?
-All of pack 3 air goes to FWD compartment
-ALL PACKS HIGH FLOW
What happens when you select LLCCAFR switch to HIGH AFT?
-All pack 2 air to AFT compartment
-ALL PACKS HIGH FLOW
What does the aft cargo heat switch do? What does the amber TEMP mean?
ON: Heats floor of aft and bulk cargo
OFF: Shuts off heat
TEMP: excessive temperature in compartment. Shuts off air to compartment automatically. (Overheat shutoff valve)
Name all the autothrottle modes
-THR REF
-THR
-SPD
-IDLE
-HOLD
What mode roll and pitch modes would you be in if you turn the flight director off and back on in flight
DEFAULT MODES:
ROLL: Either ATT (more than 5 degrees) or HDG HOLD (Less than 5 degrees)
PITCH: V/S (unless VSI absolutely 0 which ALT would be the mode)
When do the speedbrakes deploy on landing?
If armed:
-Thrust levers 1 and 3 near idle
AND
-Main landing gear touchdown
(Backup is either reversers 2 OR 4 will also deploy spoilers if not armed)
After touchdown, if thrust lever 1 and 3 is near idle, speedbrakes go up. What happens if you need to go around? (When do they stow)
If thrust lever 1 OR 3 is advanced
What powers the inboard trailing edge flaps?
Hydraulic system 1
What powers the outboard trailing edge flaps?
Hydraulic system 4
What are the 3 protections the EEC provides in normal mode?
-Overspeed protection
-Thrust limiting (overboost)
-Constant thrust for changing temp, pressure, and bleed demands
Do the EECs talk to each other?
No
During an engine autostart, you are responsible for monitoring_______
N1 and oil pressure. (Must have those by 62-67% N2)
What happens when you move a fuel selector to cutoff?
-Cuts off fuel to respective engine
-Unlocks respective fire switch
-Starts respective demand pump (If demand pump selector is in auto)
-Stops ignition if there was any
Can you navigate using the center CDU?
No, its for ACARS only
How many flight plans can the FMC store?
7
Priority of IRS input data
1.) GPS
2.) LOC
3.) D/D (dme/dme)
4.) V/D (vor/dme)
5.) V/V (vor/vor)
(basically just know GPS is the most accurate and commonly used…)
How long does an IRS quick align take? What position do you select on the selector? What is the point of a quick align?
30 seconds
Rotate to ALIGN
To remove accumulated positional errors (CAN ONLY DO ON THE GROUND)
What PFD instruments are supplied by the IRS?
-Attitude
-Heading
-IVSI
-Trends
-Slip/skid
Normally after power up, both yaw damper lights have an amber INOP light on the switch. When does this go away?
After the first IRU aligns
How long is a normal IRS alignment?
10 minutes
During IRS alignment, where does it display time to align?
Top left of ND
ATT on an IRS selector is used for what?
As an emergency method to restore attitude in flight if an IRU fails. It requires magnetic heading input on the CDU
Where is the external power receptacle located?
On the lower right side of the aircraft. Basically directly below the FO seat
On the external power receptacle, there are 2 ports to plug in either EXT 1 or EXT 2. Which is on the right and which is left?
Left: EXT 1
Right: EXT 2
-Which bus has flight deck access lights? (so you can walk onto a dark plane and walk up the stairs to the cockpit)
What ever is powering the ground handeling bus will power the Ground SERVICE bus (use the ground service switch)
Does autoland isolation isolate just the AC system? Or is it both the AC and DC system?
Both AC (BTB) and DC (DCIR)
To disconnect an IDG, the thrust must be______
Above idle
What is the ELCU load shed priority?
First gally, then onto the fuel pumps
Can you outbrake MAX AUTO?
Yes
Can you outbrake RTO?
No