System Powerplant

Question 1

ITT- APR not operating

Answer 1

900 (first 2 min.)

864 (next 3 min.)

Question 2

ITT- APR operating

Answer 2

928 (first 2 min.)

900 (next 3 min.)

Question 3

Maximum Continuous Thrust

Answer 3

900*
874 to 900†
900†
*During MCT, amber band and red tick mark appear if the ITT exceeds 874°C
†During MCT, amber band becomes a red band if:
-ITT exceeds 874°C for more than 30 seconds, or
-ITT greater than 900°C

Question 4

Normal takeoff oil pressure

Answer 4

45 PSI minimum

Question 5

Maximum transient oil pressure after cold start:

Answer 5

• 156 PSI
• 130 PSI at idle for 10 minutes maximum
• engine must remain at idle until oil pressure returns to normal range

Question 6

Powerplant operating limitations: N2

Answer 6

• N2 split between engines at ground idle thrust should not be greater than 2%
• N2 do not accelerate above idle if N2 is 57% or less with an OAT of -20°C or greater (warmer)

Question 7

Cold-soaked aircraft operation

Answer 7

Before the first flight of the day, when the airplane is cold-soaked at an ambient temperature of -30°C or below for more than 8 hours:

• N1 fan rotation must be verified before introducing fuel for an engine start
• Thrust reversers must be actuated until the deploy and stow cycles are less than 5 seconds.

Question 8

Continuous engine ignition

Answer 8

Requirement for use

• Takeoff and landing on contaminated runways;
• Takeoffs with high crosswind components (over 15 knots);
• Flight through moderate or heavier intensity rain;
• Flight through moderate or heavier intensity turbulence;
• Flight in the vicinity of thunderstorms.

Question 9

Thrust reverser restrictions (company)

Answer 9

To prevent engine damage due to FOD except in an emergency, reverse thrust must not be used below 60 KIAS.
CAUTION: Use of full thrust reverse on contaminated surfaces requires extreme caution. Loss of directional control and reduce visibility due to whiteout conditions may occur.

Question 10

Starter cranking limits

Answer 10

The starter must not be used if indicated N2 RPM exceeds 55%.
1-1 min. on, 10 sec. off
2-1 min. on, 10 sec. off
3-1 min. on, 5 min. off
4-1 min. on, 5 min. off

Question 11

Associated start conditions

Answer 11

At initiation of thrust lever movement from SHUT OFF to IDLE

• ITT must be 120°C or less for all ground starts
• ITT must be 90°C or less for all air starts

Question 12

Starter cranking limits for dry motoring cycles

Answer 12

1-90 sec. on, 5 min. off

2-30 sec. on, 5 min. off

Question 13

Maximum air turbine starter engagement altitude

Answer 13

21,000 ft.

Question 14

Flexible thrust operation (prohibited conditions)

Answer 14

-if the normal takeoff fan speed is less than 85 % N1
-if wing and/or cowl anti-ice bleeds are in use
-on contaminated runways
when warning of windshear or downdraft have been forecast