FCOM QUESTIONS Flashcards
DITCHING guarded pushbutton, what happen?
“close” signal to the
outflow valve,
emergency ram air inlet,
avionics ventilation inlet and extract valves,
pack flow control valves.
Note: The outflow valve will not close automatically, if it is under manual
control
CAUTION: If the ditching pb is set to ON, with the low pressure ground
cart connected and all doors closed, a differential pressure will
build up
“HIGH” or “LOW” on the PROG page
“HIGH” or “LOW” on the PROG page indicates the FM position accuracy, based
on estimated uncertainty. When GPS PRIMARY mode is lost, the flight crew must
periodically check this position accuracy. In GPS PRIMARY mode, the position
accuracy is always at HIGH.
Below maneuvering speed (F, S, Green Dot) BANK LIMITATION
Below maneuvering speed (F, S, Green Dot) – 10 kt, the autopilot or flight director
(AP/FD) cannot order a bank angle greater than 15 °.
Above maneuvering speed – 10 kt, this limit linearly increases until it reaches:
‐ In selected lateral guidance: 25 ° at maneuvering speed – 3 kt. The limit is then
25 ° for all speeds above maneuvering speed – 3 kt.
‐ In managed lateral guidance: 30 ° at maneuvering speed – 3 kt. The limit is
then 30 ° for all speeds above maneuvering speed – 3 kt.
FMGS RESET
When the FM software cannot work properly or receives instructions to perform impossible
operations, it automatically resets itself. A resynchronization with the other FM always follows.
When the reset is a minor one, the system will recover by itself. One single reset lasts 2 to 3 s maximum followed by 25 s of resynchronization.
When the reset is a major one:
‐ Resets recur at short intervals (several in 2 or 3 min)
‐ The memories are cleared, leading to the loss of F-PLN, GW, CI, CRZ FL, MCDU-entered
speeds and NAVAIDs and to database switching
CAUTION: If three dual FM resets occur in 2 min, pilot-entered data is lost. If a dual reset is
identified, it is recommended that the flight crew does not perform again the last
MCDU actions for 1 min (in order to avoid a potential second dual reset, leading to
the loss of pilot-entered data)
NOTE: 2 MINUTES ONLY ON OUR PR-YY FLEET. ALL OTHERS ACFT IS 3 MINUTES
FMS erronous trajectory display during cockpit preparation, example showing a right turn instead of a left turn. Should we still use?
CAUTION: Even if the flight plan is correct during the Cockpit Preparation or during the
Descent Preparation, the FMS may compute and display an erroneous trajectory
when the FMS updates its predictions after takeoff or after go-around initiation.
THE CREW SHOULD SELECT HDG/TRK
A/THR instinctive disconnect for 15 s
CAUTION: If the flight crew presses, and holds one A/THR instinctive disconnect pb for more
than 15 s, the A/THR will disconnect for the remainder of the flight. All A/THR
modes, including A.FLOOR, will be lost. The A/THR will be recovered at the next
FMGC power-up on the ground.
IDG DISCONNECT PB
CAUTION:
1. Maintaining the IDG pb-sw during more than 3 s may
damage the IDG disconnection mechanism. SOLENOID.
- Disconnect the IDG only when the engine is running or
windmilling. If not, the IDG will be damaged when starting
the engine.
What happen if you push RAT PB on OVHD HYD PANEL?
It will activate RAT but not start GCU generator control unit
What conditions cause RAT to auto deployment?
Losses of AC BUS 1 and AC BUS 2 if airspeed above 100 kts.
WHICH BUSES EMER GEN SUPLIES?
Basically all essentials. AC ESS BUS and AC ESS SHED.
Thru ESS TR powers DC ESS and DC ESS SHED
EMER GEN APPEAR GREEN ON MEMO.
When RAT & EMER GEN red FAULT LIGHT comes ON?
When EMER GEN is not suplying power to AC ESS and DC ESS with AC BUS 1&2 losses
Can we Test EMER GEN PB on cockpit preparation?
NO, this a maintanece procedure.
With RAT deployed, and the airspeed below 100 kts or stalls, which electrical buses are powered?
DC BAT BUS is AUTO connected to the BATTERIES.
The AC ESS thru the STATIC INV and DC ESS thru batteries. They are automatically shed.
We lost AC ESS SHED and DC ESS SHED.
With RAT deployed, in ELEC EMERG config, on ground below 50 kts, what we loose?
We loose the AC ESS.
The AC ESS BUS is automatically shed, and all EFIS and ECAM displays are not powered.
What happen if you push MAN ON RAT PB on OVHD EMER ELEC PWR?
This PB is normally in auto. If you push RAT will deploy at any speed and activate the GCU.
What is the function of GEN 1 LINE PB on OVHD EMER ELEC PWR?
It’s primary function is to smoke drill in case of AVNX SMOKE.
It’s disconnect the GEN 1 line to AC BUS 1. Basically you disconnet the GEN 1 from the electrical logic schematic.
When IDG FAULT lights comes ON? What happen if you push more than 3 sec?
IDG low oil pressure, or
IDG high oil temperature
IF you push more than 3 sec it may damage the disconnect solenoid.
Is it possible to disconnect IDG if engines stopped?
NO, it must be running or windmilling.
What is the function of the ACC ESS FEED FAULT light on OVHD ELEC PANEL?
and what is the ALTN PB?
ACC ESS and DC ESS is normally power by AC BUS 1. If you loose AC BUS 1 then the AC ESS and DC ESS should by powered by AC BUS 2. If the FAUL light comes ON, the AC ESS and DC ess are not powered. you should press ALTN PB to complete the transfer.
APU FIRE detection. How many loops and discharge bottles?
2 LOOPS, A & B
1 bottle.
APU FIRE detection, with 1 loop fail. Do we still have fire detection?
YES, the logic is LOOP A and LOOP B or LOOP A or LOOP B in case of a single loop failure.
Explain the RED DISC of APU during external check?
This dis is the APU FIRE EXTINGUISHER OVERPRESSURE INDICATION. If it’s not there, the botlte has been discharged or loosed its pressure.
Does APU has automatic shutdown in flight? What happen if you push APU FIRE PB on OVHD APU ?
NO auto shutdown in flight.
If you press the PB you close:
SHUT DOWN APU
DEACTIVATE APU GEN
LP FUEL VALVE,
APU FUEL PUMP
APU BLEED VALVE
XBLEED VALVE
Arm squibs.
APU FIRE on ground?
auto shutdown and bottle discharge after 3 sec of FIRE detection. A horn on maintenance panel will be activate.
What is the funciont of the ECAM COUNTDOWN during an APU FIRE?
Provides countdown for spool down before agent is discharged to increase it’s effect. Same as the engine.
When the DISCH amber light illuminate on APU fire?
When the bottle pressure ir low.
Describe the CARGO smoke detector and Inhibit phase.
FWD cargo has 1 cavity if 2 smoke detectors.
Each cavity holds loop fire detection for each smoke detector. So each cavity has 2 loops to detect fire in the DUAL LOOP DETECTION PRINCIPLE.
AFT cargo has 2 cavities and 4 smoke detector
When a single cavity detect smoke the fire detection is activate. OR
when a one smoke detector detects smoke and the othe smoke detector is inoperative.
Inhibit phase 4,5,7,8
BASICALLY : during takeoff, from 80 kts liftoff until 1500 ft.
During landing: 800 ft touchdown until 80 Kts
what is SDCU?
SMOKE DETECTION CONTROL UNIT. When fire is detect it sends signal to ECAM.
Which flight phase the CARGO FIRE DETECTION is inhibited?
4,5,7,8
Takeoff
80 kts, LIFT OFF, until1500ft
Landing
below 800 ft, touch down befeore 80 kts IAS
How many bottles do we have in CARGO COMPARTMENT?
One bottle with
ONE nozzle to FWD CARGO and
Two nozzles to the AFT CARGO
After how many seconds the DISCH AMBER LIGHT on CARGO FIRE OVHD PANEL will illuminate in case of FIRE and bottle has been used?
60 seconds.
AVNX SMOKE, when the ECAM will trigger?
5 sec after smoke is detect on AVNX ventilation duct system.
AVNX SMOKE, what will illuminate on OVHD panel?
GEN 1 LINE illuminate SMOKE amber
BLOWER illuminate FAULT amber
EXTRACT illuminate FAULT amber
It will illuminate to help crew locate the PB
AVNX SMOKE configuration, what happen inside the AVNX compartment?
Will stop BLOWER and allow only AIR CONDITIONED into AVNX CPT then dump it OVERBOARD.
LAVATORY SMOKE DETECTOR,how many and where it appears to crew?
1 SMOKE DETECTOR each lavatory and it will appears on ECAM and CIDS (CABIN INTERCOM DATA SYSTEM)
LAVATORY SMOKE DETECTOR, how it works and when it is discharged?
SOLDER tipped that melts with heat. Automatic discharge. There’s no alert when it has been discharged.
What is ADIRS?
Air data inertial reference system. Provides
Temp
Altitude
Attitude
Airspeed
Acft position
It’s comprised of 3 ADIRU (air data and inertial reference UNIT)
basically replaces the Air Data computer and IR from earlier Acfts.
what is ADIRU?
Air data and inertial reference UNIT.
AIR DATA such as Temperature, airspeed and altitude
INERTIAL REFERENCE such as Atittude, heading, inertial and Acft position.
ADIRS latitude limitation and why?
73 N and 60 S
This is because the magnetic variation is stored only in these areas.
Outside this areas, will cause ADIRS to produce true heading instead of magnetic heading.
When you should put ADR on “ATT” on ADIRS OVHD PANEL?
When NAV mode has failed and FAULT LIGHT is flashing
ATT provides attitude and heading data, NOT the acft position.
WIING ANTI ICE, how does it work and which surface receives the hot air?
Provides Hot air from the pneumatic system for the 3 most outboard slats.
Only operates in flight.
On ground it works only for self test for 30 sec.
What is ON BAT amber light illuminated on OVHD ADIRS PANEL?
when ONE or MORE ADIRU’s is on BATT PWR. If the acft is on ground, and ON BAT amber light illuminate, a external HORN sounds and the light ADIRU & AVNX VENT lights illuminate on maintenance panel, in order to alert crew that the battery will drain.
Explain the AMBER FAULT LIGHT on ADIRS OVHD PANEL
STEADY AMBER: The Inertial reference feature of the associated ADIRU has failed.
FLASH AMBER: IT is possible to recover the ATT, selecting ATT.
NOTE: the crew should periodically compare the heading with the std by compass in this case, and input on the FMGS when necessary.
PROBE / WINDOW HEAT working logic?
works automatic with at least ONE engine is running.
RAIN REPELLENT works on Ground?
NO.
If the EGT ever exceed the maximum permissible mark, how does it show on EGT ENG DISPLAY?
The exceedance EGT display will remain displayed until maintanence action or next takeoff. Will be a mark where the EGT exceedance reach.
If the N2 ever exceed its maximum value, how it shows on N2 ENG DISPLAY?
Will be a Red cross until maintanence action or next takeoff.
IF the temperature is slightly different on FLX TO entered by the crew on MCDU than displayed on ENG DISPLAY UNIT, is it normal?
YES, it can be normal the slightly difference.
AVAIL INDICATION on engine in flight and on ground, how long does it flahses?
10 seconds on ground and 60 seconds in flight.
When FUEL USED DISPLAY RESETS?
AUTO resets when the associated engine starts.
When the fuel used appears on DASHED?
The value accuracy is degraded.
Two amber dashes appear over all five digits.
This occurs when the Fuel Flow is not valid in flight, for more than 1 min
WHEN oil pressure and oil temp flashes?
when its high or low than normal operation parameters.
When NACELLE NAC temperature will appears?
Only if the temperature is excessive.
WHEN CORE and BOOST ice protection will appear on ENG DISPLAY? Can be activate by pilots?
To prevent ice crystals icing. This is an AUTOMATIC protection.
Which engine fluids can we have CLOG indication?
fuel and oil
When the igniters appears on AUTOMATIC START ENGINE?
N2 20% and continue fires until 55% N2.
OXYGEN. Which altitude it will provide forced 100% oxygen to crew?
FL 300
For how long time pure oxygen 100% can be delivered?
22 minutes
for how long time PBE can supply Oxygen?
15 minutes
Definition of ICING CONDITIONS
On ground when OAT (or TAT in flight) is at or below 10 Celsius, visible moisture and visibility less than 1 SM. (1600 meters)
Explain the IDLE settings: minimum idle, approach idle e rev idle
Minimum idle:
flight: gear not down and flaps not 3 or full
ground: reverse not selected
Approach idle: gear down and flaps 3 or full
Reverse idle: ground with thrust lever at reverse idle.
Fuel is responsable to COOL/HEAT with which fluids and components?
To keep warm thru Heat exchanger with OIL.
IDG cooling thru Heat exchanger with IDG OIL
Which valve the ENG MASTER SWITCH closes/open ?
LP valve.
How many stages has N1 and N2 ?
N1 compressor and turbine are the Low pressure compressor and low pressure turbine
N1 has 3 stage compressor and 7 stage turbine
N2 has 10 stage high pressure compressor and 2 stage high pressure turbine
When the FAULT light appears on ENG PEDESTAL PANEL?
An automatic start aborted
A start valve fault
Disagreement between the HP FUEL SHUTOFF POSITION and its command position.
How many MODEs do we have in NORMAL LAW?
3
Ground mode
Flight Mode
Flare mode