Engines/Thrust Levers (Powerplant/Autothrust) Flashcards
What controls the Engines in all operating regimes?
FADECS (Full Authority Digital Engine Controls)
What is the Power source for the FADEC?
The FADEC has its own alternator independent of the Electrical system when N2 is above 10%
If the alternator fails/engine is below 10% the FADEC is powered by the Electrical System
What must you do if the FADEC detects a fault during an automatic Engine Start?
Nothing- The FADEC will discontinue the start, dry crank to clear fuel from the engine, and attempt a restart (If Warranted) automatically.
How many igniters fire during an automatic ground engine start?
One, with the other serving as a back up.
The FADEC automatically alternates between igniter A and B at each Start sequence
How many igniters fire during a Manual or In-Flight start attempt?
Both A and B together
How do you arm Autothrust on the ground?
Have at least one FD on
Place thrust levers in the TOGA or FLEX detent (Flex temp must be entered in MCDU)
What is the active range of the A/THR?
2 Engines- Just above IDLE to the CL detent
1 Engine- Just above IDLE to the MCT detent
What determines the maximum thrust the A/THR can command?
the Thrust Lever Angle
What are 3 ways to disconnect the A/THR?
A/THR Pushbutton
Instinctive Pushbutton (old TOGA button)
Moving thrust levers to IDLE
What is the proper method of disconnecting the A/THR?
Set TLA to the current EPR and press the instinctive pushbutton
How would the A/THR be disconnected for the remainder of the flight?
Press and hold the instinctive pushbutton for 15 seconds.
A/THR then cannot be reengaged and ALPHA FLOOR is also lost.
What happens to thrust and what would you see on the FMA if Alpha Floor is triggered?
Thrust will go to TOGA
A.FLOOR will annunciate on the FMA
When does the aircraft leave A.FLOOR and what will the FMA change to?
Leaves A.FLOOR upon reaching a lower AoA
FMA will then show TOGA LK
How do you get out of TOGA LOCK?
Press the instinctive disconnect pushbuttons an return thrust levers to the CL detent if not already there.
You may then reengage the A/THR
When will ALPHA FLOOR trigger?
When the aircraft reaches a high AoA
When would Thrust Lock occur?
A/THR disconnects due to a failure or
A/THR pushbutton on the FCU is pressed with the Thrust Levers in the CL detent
How is A/THR Normally armed?
By advancing the thrust levers to the FLX or TOGA detent.
What are the normal FMA indications on FLEX takeoff roll when departing a RWY w/ a localizer?
MAN FLX, SRS, RWY, A/THR (BLUE)
What are the normal FMA indications on a TOGA takeoff roll when departing a RWY w/out a localizer?
MAN TOGA, SRS, , A/THR (BLUE)
What would be the FMA indications be on T/O roll if the A/THR didn’t arm on a rwy w/ a localizer? Should the T/O be rejected?
SRS, RWY
Continuing is a safe option but at acceleration altitude the crew will have to manually engage the A/THR after placing the levers in the CL detent
How should the A/THR be turned off?
Match the blue TLA indicators on the E/WD to the present thrust setting and then press the Instinctive pushbuttons OR
Move the Thrust Levers to IDLE
What should you do to get out of THRUST LOCK?
Move the thrust levers out of the CL detent
What controls the engine LP fuel valves?
Engine Master Switches
Engine Fire Pushbutton
What does a Fault Light on the ENG Panel indicate?
H- HP Fuel SOV is not in its commanded position
A- Automatic start abort
T- Thrust Control Malfunction
When does continuous ignition automatically operate for the PW 1100G?
F- Engine Flameout Detected
I- Ignition Delay during start
S- Surge Detected
T- Thrust Control Malfunction Detected
When does continuous ignition automatically operate for the IAE V2500?
M- Master switch cycled ON-OFF-ON
E- Engine A/ICE PB on
E- EIU Data Failed (IGN/Bleed Config Data)
F- FLEX T/O thrust selected (EPR Mode)
A- Approach Idle Selected
S- Sub Idle or Surge Inflight
T- T/O thrust selected (EPR or N1 Mode)
What is the required engine warm up time?
shutdown <2 hours- 3 min
shutdown 2+ hours- 5 min
What is the required engine cool down time?
IAE V2500 REV IDLE- 0 MIN
IAE V2500 >REV IDLE- 3 MIN
PW1100G- minimum 3 MIN, 5 recommended
What does the cooling indication mean on the E/WD for NEOs?
Dry cranking is required before engine start, timer indicates approximate time of cooling cycle
What is the Engine run-up procedure if there is icing conditions on the ground?
IAE V2500- 50% N1 Every 15 Min
PW1100G- 60% N1 Every 30 Min
If during engine start the ground crew reports a fuel leak from the engine, what should you do?
IAE V2500- Continue running the engine for 5 min, if the leak disappears you may continue the flight
PW1100G- Abort the engine start and call MX
When is approach idle triggered?
V2500- In flight, flaps out of 0
NEO- In flight, Flaps at CONF 3 or Full or Gear Down
