Oral Gouge Flashcards
What does the PSEU system monitor?
Takeoff Configuration Warnings
Landing Configuration Warnings
Landing Gear
Air/Ground Sensing
When is the PSEU light inhibited?
- Inflight
- When the thrust levers are advanced towards takeoff power
- For 30 Seconds after landing
Will the PSEU light come on for a simple fault?
No, but it will show for a simple fault upon the recall switch being pressed
What does the amber “REVERSER” light mean (in depth)?
“There is a disagreement between the lever position and the actual reverser position when stowing the lever. The light illuminates after 11 seconds.”
(In Depth Answer)
- Isolation valve or thrust lever control valve not in the commanded position
- One or more thrust reverser sleeves not in the commanded position
- Auto-Restow Circuitry activated
- Failure in synchronization shaft lock circuitry
What will happen if the stabilizer trim is operated with the autopilot engaged?
The autopilot will disengage
How many degrees will the tiller deflect the nose gear?
78 degrees in either direction
What describes the largest arc during a turn?
The wingtip radius. (75.3 feet)
What is the first light that should illuminate when we move the IRS Mode Selector the the NAV position?
The ON DC light should illuminate, indicating a short power test is being performed
What is the first light that should illuminate when we move the IRS Mode Selector the the NAV position?
The ON DC light should illuminate, indicating a short power test is being performed
What should we see after the ON DC light test?
The ON DC light will extinguish, the ALIGN light will illuminate, and the alignment process will begin
How long does it take to complete a normal alignment?
Approximately 10 minutes
Is there any way to monitor how long until the alignment process is complete?
Yes. By selecting “HDG/STS” on the IRS DISPLAY’s Display Selector. (If the alignment will take longer than 15 minutes it will display “15” until the time remaining reaches 14 minutes, and then it will count down in actual time)
What does it mean if the ALIGN light is flashing?
NO Position Entry
BAD Position Entry
The airplane was MOVED
During the Secure Procedure, when the IRS Mode Selector is moved to OFF, what should you see on the IRS Mode Selector Unit?
The ALIGN light should illuminate until the system is completely shut down (approximately 30 seconds).
If AC power is lost, where do the IRSs get their electrical power?
The switched hot battery bus.
How long will each IRS operate if AC power is lost?
The left for as long as DC power is available; DC power to the right IRS is automatically terminated if AC power is not restored within 5 minutes.
Is there a system to warn people on the ground that the IRSs are operating and AC power has been lost?
Yes. Warning horn in the wheel well will sound.
Name one reason that the REVERSER light on the aft overheard panel would be illuminated.
- Isolation valve or thrust reverser control valve is not in the commanded position
- Thrust reverser sleeve position sensors are in disagreement
- Auto-reset circuit has been activated
The REVERSER light illuminates when the thrust reverser is commanded to stow and extinguishes 10 seconds later when the isolation valve closes. Any time the REVERSER light illuminates for more than approximately 12 seconds, a malfunction has occurred, and the MASTER CAUTION and ENG system annunciator lights illuminate.
Since the oxygen bottles next to the supernumerary seats are not controlled by the passenger oxygen switch, does that switch even do anything on our airplanes?
Yes, it activates passenger oxygen in the lavatory
What are EEC’s and how doe they work?
Engine Electronic Control
It uses thrust lever inputs to automatically control forward and aft reverse thrust. It uses sensed flight conditions and bleed air demand to calculate N1 thrust ratings
What protections do the EEC’s provide?
N1 and N2 overspeed protection in the normal and alternate mode. The EGT limit must be observed because it does not provide EGT redline exceedance protection
If one EEC fails can we depart?
Yes (need to vet this answer)
If one EEC fails can we use the operable EEC?
No it must be put in the hard alternate mode
What percentage of N2 does the EEC become energized during start?
15%
What engine idles do the EEC’s provide?
Ground Idle
Flight Idle
Approach Idle
When is approach idle selected?
When the flaps are in the landing configuration or either engine anti ice switch is ON
How can you silence the Mach/Airspeed Warning System if you are exceeding Vmo/Mmo?
By slowing to a speed below Vmo/Mmo
If the captain’s stick shaker fails inflight, and the aircraft subsequently approaches a stall, will the captain’s yoke still vibrate?
Yes. Vibrations are felt in both columns though control interconnects when either stick shaker activates.
Can a single hydraulic system operate all primary flight controls?
Yes
What primary flight controls may still be operated with the loss of all hydraulic systems?
Ailerons and elevators (control forces will be higher due to friction and aerodynamic loads)
Can the rudder still be operated with the loss of both A and B hydraulic systems?
Yes, through the standby hydraulic system
What happens when the FLT CONTROL switch is moved to the OFF position?
Closes the flight control shutoff valve isolating the ailerons, elevators, and rudder from associated hydraulic system pressure.
What two ways can we manual activate the Standby Hydraulic Pump?
- Positioning either FLT CONTROL switch to STBY RUD
- Positioning the ALTERNATE FLAPS master switch to ARM
What happens when the FLT CONTROL switch is moved to STBY RUD?
- Activates the standby electric motor-driven pump
- Shuts off the related hydraulic system pressure to ailerons, elevators and rudder by closing the flight control shutoff valve
- Opens the standby rudder shutoff valve
- Deactivates the related flight control LOW PRESSURE light when the standby rudder shutoff valve opens
- Allows the standby system to power the rudder and thrust reversers
- Illuminates the STBY RUD ON, Master Caution, and Flight Controls (FLT CONT) lights.
What happens when the ALTERNATE FLAPS master switch is moved to ARM?
- Activates the standby electric motor-driven pump
- Closes the trailing edge flap bypass valves
- Arms the ALTERNATE FLAPS position switch
- Allows the standby system to power the leading edge slaps and slats and thrust reversers
What will cause Automatic Operation of the standby hydraulic system?
- Loss of system A or B, or rudder pressure reducer system fails in low pressure mode, and
- Flaps extended, and
- Airborne or wheel speed greater than 60 knots, and
- FLT CONTROL switch A or B hydraulic system ON
OR
- The main PCU Force Fight Monitor (FFM) trips
What does automatic operation of the Standby Hydraulic system cause?
- Activates the standby electric motor-driven pump
- Opens the standby rudder shutoff valve
- Allows the standby system to power the rudder and thrust reversers
- Illuminates the STBY RUD ON, Master Caution, and Flight Controls (FLT CONT) lights
What is the Elevator Feel System?
The elevator feel system uses the elevator feel computer to provide simulated aerodynamic forces using airspeed (from the elevator pitot system) and stabilizer position. Feel is transmitted to the control columns by the elevator feel and centering unit. To operate the feel system the elevator feel computer uses either hydraulic system A or B pressure, whichever is higher. When either hydraulic system or elevator feel pitot system fail, excessive differential pressure is sensed in the elevator feel computer, and the FEEL DIFF PRESS light illuminates
When is the Feel Differential Pressure light armed?
- The first one is related to a differential of A & B hydraulic pressure to the elevator feel system. When either hydraulic system pressure drops > 25% related to the higher pressure, the FEEL DIFF PRESS light illuminates on the flight control panel with a 30 second delay. The 30 second delay prevents the light from “flickering” when pressure drops in either system by a high demand such as gear selection.
- The second is related to the dynamic air pressure supply to the Elevator Feel Computer. It receives dynamic pressure from the two pitot tubes mounted on either side of the vertical stabilizer. When the computer receives an eratic signal it’d be the same as the pressure drop and the light illuminates. (failed probe heater and icing conditions)
- The third is related to the Stall Management and Yaw Damper (SMYD), and a so called Elevator Feel Shift module (EFS), which creates a ±4 times higher forward control column force when approaching the stall region. This force uses a reduced system A pressure and when this reducer fails, opening prematurely providing a higher than normal A system pressure to the feel actuator, the FEEL DIFF PRESS also illuminates after 30 seconds.
Note on the last system, it’s inhibited <100 ft. RA and AP selected, and when the EFS is not operational.
What does it mean if the Feel Differential Pressure light is illuminated?
Excessive differential pressure in the elevator feel computer
What is the Speed Trim System?
The speed trim system is designed to improve flight characteristics during operations with a low gross weight, aft CG, high thrust. It monitors inputs of stabilizer position, thrust lever position, airspeed, and vertical speed and then trims the stabilizer using the autopilot stabilizer system. Operates most frequently during takeoff and go-arounds.
What are the conditions for speed trim operation?
- Airspeed 100 – .6 mach
- 10 seconds after takeoff
- 5 seconds following release of trim switches
- Autopilot not engaged
- Sensing of a trim requirement
What is indicated if the SPEED TRIM FAIL light illuminates when the Master Caution recall light recall is pressed, and extinguishes when the master caution system is reset?
Single channel failure of the FCC
Will the Speed Trim system still operate with a single channel failure?
Yes
What is Mach Trim?
Above Mach .615, the Mach trim system automatically adjusts the elevators with respect to the stabilizer as speed increases. The Mach trim actuator repositions the elevator feel and centering unit, which adjusts the control column neutral position.
What is indicated by the FUEL VALVE CLOSED light being illuminated bright blue?
The related fuel shutoff valve:
- Is in transit, or
- Valve position and engine start level or engine fire switch disagree
Which valve position is indicated by the FUEL VALVE CLOSED light?
The Engine fuel shutoff valve
Are the fuel valves and crossfeed valve AC or DC powered?
DC
What bus powers the fuel valves and crossfeed valves?
Hot Battery Bus
From which tank is the fuel temperature sensed?
Number one tank
If the fuel filter bypass light illuminates, what is indicated?
Impending fuel filter bypass due to a contaminated filter
Can you feed the fuel to the APU from the number two tank? If so, how?
Yes. Open the crossfeed selector and turn on either of the number two AC fuel pumps
If AC fuel pumps are not operating, how is fuel supplied to the APU?
Fuel is suction fed to the APU from the number 1 tank if the AC fuel pumps are not operating. On some airplanes, a DC fuel pump provides positive fuel pressure to the APU, but only until the APU is at governed speed and ready to accept a load.
With all six fuel pumps in the off position, how many fuel pump LOW PRESSURE lights should be illuminated?
4, The center tank low pressure lights will not be illuminated when the pump switches are in the off position
In flight, both center fuel tank pump low pressure lights and the Master Caution light illuminate, causing you to turn off the center tank pumps even though there is fuel remaining in the center tank. What happens to the fuel that remains in the center tank?
With the main fuel pump NO 1 FWD Switch ON, the center tank fuel scavenge jet pump operates automatically to transfer any remaining center tank fuel to main tank NO. 1. Fuel transfer begins when main tank NO 1 quantity is about one half.
How long will the scavenge pump operate?
The remainder of the flight for the -800.
Where is the fuel scavenged to?
Main tank 1
Which tanks can be pressure refueled?
Both main tanks and the center tank
If pressure fueling is not available, which tanks can be filled directly using over wing fueling?
None on the -800
Is there any way to get fuel into the center tank if pressure refueling is not available?
Yes. Through ground tank to tank fuel transfer
What are the approximate fuel tank quantities?
NO 1/2 8,630 Pounds
Center 28,803 Pounds
Total 46,063 Pounds
I walk onto a completely dark airplane and want to apply power to it. How do I do that?
Electrical Power Up Supplementary Procedure
What are the phase, volts, and cycles of the AC electrical system?
3 phase, 115 volts, 400 hz
What are the different sources of normal AC electrical power?
Main engine generators, APU generator, AC external
Can the different sources of AC power be paralleled?
No
How do the engine generators provide electrical power at a constant frequency?
The IDG maintains a constant generator speed throughout the normal operating range of the engine
What is indicated by a “RISE” indication of the Generator Drive Oil Temp of more than 20 degrees C? (-400)
Excessive generator load, or poor generator drive condition.
If the Generator Disconnect switch is used to disconnect the generator, can the generator be re-engaged in flight?
No
Does the APU have a generator drive unit? Why Not?
No, It is not needed since the APU is governed to maintain a constant speed. (-400 question. Not mentioned in the -800 FCOM)
Can the APU power both Generator Busses while on the ground?
Yes
Can the APU power both Generator Busses in flight?
Both Transfer busses can be powered on the ground or inflight (-800)
What is the purpose of the Bus Transfer system?
Allows the AC transfer busses to be powered from the offside GEN Bus in the event that the onside generator bus becomes unpowered (occurs automatically with the switch in the AUTO position).
With the loss of all AC generators, how is the Standby Bus powered?
From the battery, through a static inverter.
In flight, with the STANDBY POWER switch in AUTO, and the loss of all AC generators, what will happen?
The AC standby bus will be powered from the battery via a static inverter, and the DC standby bus, battery bus, and switched hot battery bus are powered by the battery.
With the STANDBY POWER switch in the AUTO position, and the loss of all AC generators, what will happen upon touchdown?
Air ground logic will prevent the battery from continuing to power the AC and DC standby busses. As a result, all equipment powered by the AC and DC standby busses is lost until the STANDBY POWER switch is moved to the BAT position. (COULD NOT FIND IN -800 FCOM)
How long will a fully charged battery continue to provide power to the essential flight instruments following the loss of all AC generators?
At least 30 minutes
How do we produce DC power on the airplane?
Three transformer Rectifier Units convert 115 volt AC power to 28 volt DC power
How many batteries do we have on our airplanes?
2