Engine Flashcards
What precaution should be taken prior to engine shut down?
Operate engines at or near idle speed for at least 2 min
During all engine starts do not exceed ___% N1 for ___ min after start or….
75%
2 min
Until all indications are in the normal range whichever is longer
Maximum ITT Start Temp
900 C
Maximum Engine to Engine N2 split at ground power idle
2% N2
Do not accelerate above idle when….
N2 is 57% or less with an OAT of -20C or warmer
Minimum oil pressure at takeoff power
45 psi
When must Continuous Ignition be used?
Takeoff and Landing in contaminated runways
Takeoff with high crosswind +15kts
Flight through moderate or heavier intensity rain
Flight through moderate or heavier intensity turbulence
Flight in the vicinity of thunderstorms
Engine Starter Cranking Limits
START MAX TIME ON. FOLLOWED BY
- 1 min. 10 sec
- 1 min. 10 sec
- 1 min. 5 min
The starter must not be engaged if….
N2 RPM exceeds 55%
Max ITT for all ground starts
120 C for throttle movement from SHUT OFF to IDLE
During landing, application of reverse thrust above ___% is not permitted at airspeeds of ____
60%
Below 75 KIAS
Maximum speed for reverse thrust above idle (30%)
60 KIAS
Maximum fuel imbalances
800 lbs
Maximum total fuel load for PRESSURE refueling
14,518 lbs
Maximum Useable Total fuel load GRAVITY refueling
13,906 lbs
How much fuel must be in the wing tanks in order to have fuel in the center tank?
4,400 lbs
Minimum fuel temperature indication required for takeoff
5 C
41 F
Can fuel crossflow, either gravity or powered be used for takeoff?
NO. They must be off
APU starter limitations (on BATTERY)
START. MAX TIME ON. FOLLOWED BY
- 30 sec. 2 min OFF
- 30 sec. 20 min OFF
- 30 sec. 2 min OFF
- 30 sec. 40 min OFF
APU start limits (DC Ground Power)
START. MAX TIME ON. FOLLOWED BY
- 15 sec. 2 min
- 15 sec. 20 min
- 15 sec. 2 min
- 15 sec. 40 min
APU Maximum Starting Altitude
30,000 ft
APU maximum operating altitude
36,000 ft
Bleed Air for Air Conditioning from APU is not permitted…..
Above 15,000 feet
Bleed Air for Engine Ground Start from APU
Can be used to start each engine
But….
If both engines are to be started using APU bleed air, the operating engine may not exceed 70%
What limitation exists if both engines are to be started using APY bleed air?
The operating engine may not exceed 70%
Max airspeed if APU door is open or condition unknown
300 KIAS
OR APU must stay in operation
Max altitude for single PACK operation
25,000 feet
