Powerplant Flashcards
Max TGT start
740 deg / 2 secs
Max TGT during relight
780 deg / 2 sec
Max TGT during take off
850 deg / 5mins norm or 10 mins OEI
Max continuous TGT
795 deg
Max over temp
870 deg / 20 sec
Minimum idle (min N2 %)
47.9%
Flex thrust take off should not be used…
FLX shall not be used when:
- icing conditions exist;
- the runway is contaminated with standing water, slush, snow or ice;
- windshear or temperature inversions are reported or expected;
- the lift dumpers are inoperative;
- one or more anti-skid units are inoperative;
- wing anti-icing is on;
- tail anti-icing is on;
- the operator has not established a means to periodically verify the availability of take-off rated thrust to ensure that engine deterioration does not exceed authorized limits;
- items affecting performance cause significant increase in crew workload
NOTE: 1. The take-off decision speed V, must be scheduled in excess of or equal to 0.9 VR (0.9<Vy/ps1.0).
The corresponding take-off weight restrictions in chapter Performance must be observed.
- The minimum and maximum assumed temperatures in chapter Performance must be observed.
- The minimum operating temperature for flexible take-off with the ATS engaged is minus 25 deg C (minus 13 deg F).
- The minimum operating temperature for flexible take-off with the ATS not engaged is minus 5 deg C (23 deg F).
Max TGT reverse thrust
850 deg / 60 secs
Max N1 (take off and continuous)
95.5%
Max N2 take off
103.5%
Max N2 (continuous)
100.5%
Minimum oil pressure take off
30psi
Minimum oil pressure to complete flight
16-25psi
Minimum oil temp for starting
-50c
Minimum oil temp before increasing power
-30c
Maximum oil temp (unrestricted)
105c
Max oil temp (15 mins) transient
120c
Max oil consumption
.426 L/ph
Starter cutout %
45%
Stabilised fuel flow after start
317-340 kg/hr
Reverse thrust N1 limitations
Do not stabilise rev thrust between 57-75%
Oil quantity is displayed
15 mins after shutdown
Bleed required for start
25-35psi at sea level
Down to 20psi at 8000ft
Time at idle thrust before shut
1 min
