Powerplant Flashcards
Min oil temp for start
-40˚C
Max oil inlet temp
Continuous - 105˚C
15 min - 120˚C
Min oil temp to move power levers
-30˚C
Min oil pressure at idle
16 PSI
Min engine fuel temp
-40˚C
Max engine fuel temp
Continuous - 90˚C
15 min - 120˚C
Min oil press for takeoff
30 PSI (@ TO Pwr)
Minimum oil press to complete flight
97.5% HP (Max Cont) - 25 PSI
92% HP - 22 PSI
84% HP - 19 PSI
76% HP - 16 PSI
Acceptable Takeoff Power EPR Range
TO EPR ≤ .01 of rated EPR
TO EPR ≤ .05 of rated EPR
Airstart Ignition Duty Cycle
W/ASC 304 - NONE
W/O ASC 304 - 5 min on / 30 min off
30 sec on / 30 sec off - No Limitation
Max ground start TGT
700˚C Momentary (2 sec)
Max airstart TGT
780˚C Momentary (2 sec)
Max Takeoff / Go-Around Power LP HP TGT Time
LP: 95.5%
HP: 99.7%
TGT: 716-800˚C
5 min / 10 min single engine
Max Continuous Power
LP
HP
TGT
- LP: 95.5%
- HP: 97.5%
- TGT: 715˚C
Minimum Approach Idle
LP: —-
HP: 67%
TGT: —-
Minimum Ground Idle
LP: —-
HP: 46.6%
TGT: —-
Max Reverse
LP: —-
HP: 88%
TGT: 695˚C
No time limit
1 min every 30 min if no ASC 166
Max Overspeed
LP: 98.3%
HP: 102.6%
TGT: —-
20 sec
Max crosswind for engine start
30 Kt
Max TGT to initiate engine start
150˚C
Max tailwind for engine start
24 Kt
“OIL PRESS LOW” CAS message illuminates when?
Oil press < 16 PSI
Engine Starter Duty Cycle
30 sec ON / 30 sec OFF
30 sec ON / 30 sec OFF
30 sec ON / 15 min OFF
Thrust Rating
13,850 #
Max altitude for guaranteed start
25,000 MSL
Airstart Envelope
≤ 25,000 MSL
200 - 324 KCAS
Minimum altitude for autothrottles
Can be used for TO
Landing: 50’ AGL
Automatic Idle Speeds (4)
Ground Idle: 46.6% HP
Flight Idle: 48% HP
Above 15,000’: 49.5-78% HP (up to FL450)
Approach: 67%
Powerplant Make and Model Number
Rolls Royce Tay Mk 611-8
What automatic shutdown protection feature is provided by the TAY 611-8?
LP shaft failure protection will shut the engine down and will lock the HP fuel cock in the OPEN position.
What is the guaranteed minimum thrust rating on the TAY 611-8 engine?
13,850# @ 30º C
What is indicated by illumination of the “ENG IDLE” light on the ground?
Engine idle is at approach idle (67% HP RPM)
The amber EICAS indication identified as “SVO” should extinguish by what HP % RPM?
44.5% HP
What does the green EICAS indication “IGN” indicate?
The ignition relay is energized
What is the maximum altitude and the airspeed envelope for a guaranteed engine air start?
- 25,000 feet
- 200 - 324 KIAS
During an auto throttle takeoff, when does the auto throttle system go to EPR HOLD mode?
At 60 knots indicated airspeed, regardless of EPR setting
When does the red “OIL PRESS LOW” CAS message illuminate?
When the oil pressure < than 16 psi
What are the autothrottle engagement requirements? (4)
- Isolation Valve Closed
- Autothrottles Armed
- TO / GA Mode Selected
- EPR ≥ 1.17
What conditions (9) would cause the autothrottles to disengage?
Autothrottle Arm Switch Selection of Opposite AT Computer Authrottle Disengage Switches Autothrottle Engage Switches (second push) Manual Override Isolation Valve Open Alternate Flap Selection LP Split > 20% Either HP < 41%
If an engine fails after V1 during takeoff, when are the flaps retracted?
At V2 + 10 and 1500 feet AGL minimum
On takeoff, with autothrottles engaged and FLCH selected, when is the power set to climb power?
At 400 feet AGL minimum altitude
What is the limitation concerning the use of the engine starter?
- Continued use of the starter is limited to 3 crank cycles, with a maximum of 30 sec per cycle
- Delay 3 minutes between start attempts
- After 3 cycles, delay use of starter for at least 15 minutes
What is the proper procedure if the green “IGN” mnemonic does not illuminate on the EICAS during an engine start?
The start may be salvaged by selecting AIR START IGN to ON prior to opening the HP fuel cock
When performing an engine start during high tail wind conditions, what is an indication that the LP rotation is positive?
HP rotation stabilized
During an engine start, when should engine ignition (light-off) occur?
Within 10 seconds after selecting the HP fuel cock to OPEN
What is the correct procedure to follow if the start valve has not closed by the time that engine idle speed (46.6%) is reached during an engine start?
Accomplish the start valve failure checklist in the QRH
If during an engine start, the EVM system momentarily displays values above the alert level (0.60), what action is required?
No action is required, this normally occurs on the first start of the day
When does the “HOLD” mode of autothrottle operation occur?
- On takeoff, at approximately 60 knots until another vertical mode is selected after attaining 400 feet AGL.
- Above 400 ft the servos are repowered and the power levers move to a thrust rating appropriate to the vertical mode selected on the guidance panel
When is the “START” position of the HP fuel cocks used?
This position is never used for flight crew operations
What is the time limitation on the air start ignition system?
- 30 sec on, 30 sec off OR 5 min on, 30 min off
- There is no time limitation with ASC 304 installed
When should you check the oil level?
Within 30 minutes of engine shutdown at termination of the last flight of the day or at intervals not exceeding eleven (11.0) hours cumulative flight time.
