Powerplant Flashcards
Max Tailwind/X-Wind for Engine Start
20 Kts / 30 Kts
How many ignitors are used for Normal Eng Start?
1
What are the FADEC Power sources during Eng Start prior to using its own generator? When does the FADEC generator pick up the load?
Channel A - L ESS DC
Channel B - R ESS DC
35% HP
Why would FADEC perform a soft reversion?
A failure which prevents continued operation in EPR mode. Soft reversion to the Alternate (LP) mode AMBER ALT
When is LO idle and HI idle active?
LO - Flaps < 22°
HI - FLaps > 22°
Can the pilot use autothrottles in ALT control?
No
What are 4 ways to open the Bleed Air Isolation Valve?
- Start Master ON
- Crank Master ON
- APU Bleed Air ON
- Manually selected
After engine start, the eng temp scale switches from…
800°C to 1000°C
Engine starter duty cycle
3 start attempts, separated by 15 seconds, followed by 15-minute cool down
Which AC Pack shuts off pressing Start or Crank Master?
Right Pack
What does “Start Switch Configuration” CAS mean?
Both START and CRANK masters are depressed
What two systems are required to unlock the T/R?
Electrical / Hydraulic
The preferred Engine Airstart procedure and limitations are
AIRSTART Automatic and at or below 25,000’
When do Auto Throttles retard?
50’ RA
Where can you see the standby engine instruments?
MCDU 1 / MENU
Max reverse thrust time
30 seconds
FADEC keeps the engine at high idle for _____ seconds on landing to facilitate the use of TR on touchdown
5 seconds
If “LTD” is displayed and fault shows and “EEC/P30” fault, this should be considered a:
No dispatch condition
The FADEC will automatically accelerate the engine to high idle speed when:
Flaps > 22°
WOW in Air mode
Wheel speed less than 53 kts
In the event a thrust reverser deploys in flight, what will occur?
FADEC commands idle fuel flow, but the power lever remains in its last position
What is the minimum bleed air pressure indication prior to engine start?
40 PSI
Will an engine start if the power lever is not at idle?
Yes, an amber “L-R THROTTLE CONFIGURATION” CAS will illuminate and the engine will accelerate to the thrust setting of the power lever
How is the FADEC reset and the AUTOSTART ABORT message cancelled
By selecting the START MASTER switch to OFF, or selecting the L/R FUEL CONTROL to OFF
What are the indications if the FADEC detects an anomaly during start?
Start aborted
Amber “AUTOSTART ABORT” CAS
When should a TGT split between engines be reported to maintenance?
If the spit is equal to or greater than 65°C
In a tailwind condition, why is it necessary to verify positive LP RPM rotation prior to selecting fuel switch to RUN?
The FADEC can only sense LP RPM, not the direction of the rotation. Negative rotation could produce a HOT start
What would you expect to see when you conduct the Engine Vibration Monitor Test?
Amber “Engine Exceedance”
Amber EVM indication ramped up between 1.8 - 2.2
What is the normal power source of the FADEC and when does it automatically come ON?
It has its own dedicated generator that comes ON above 35% HP
What is the LP RPM that is to be avoided on the ground?
66 - 80%LP
Acceleration thru this band must not exceed 10 seconds
What ways can the engine be started in the air?
Windmill
Automatic
Starter Assist
Is it permissible to dispatch in LP Control Mode?
No - Prohibited
How long should the engines be run at idle or taxi power prior to takeoff?
5 minutes
When attempting an in-flight engine restart using the ‘Air Start-Automatic” QRH procedure and APU bleed air, what is the maximum altitude this procedure can be accomplished?
30,000’ MSL
When doing a normal ground engine start, what position do the bleed air switches need to be in?
May by OFF or ON
If peak EVM values exceed the alert level during engine start, what action must be performed?
Normally, no action is required, this condition is usually normal.
What is the RPM limitation for crosswind takeoffs
LP RPM below 66% until reaching a forward speed of 20 knots, then a jam acceleration. Add 600’ to take off runway distances.
Max TGT for Ground Start
700° C
Max TGT for Airstart
850°C
Max overtemp and time limit
905° C. For 20 seconds
Max T/R RPM and time limit
70% for 30 seconds
