MH60T Trivia: #1-25
This trivia series distills over 20 years of flight manual study into 500+ focused questions and answers, posted in 25 question sets. It’s not a substitute for the manual, but rather an aid to facilitate study and strengthen airmanship. During your review, ask yourself: How is this operationally relevant? Do I need to memorize it, or just be familiar with it? Should I review more on this topic?
1. Q: Abort start criteria?
A: Ng less than 14% after 6 seconds, no TGT within 30 seconds, no oil pressure within 30 seconds, starter out before 52% Ng, TGT 851 before idle speed.
2. Q: Starter limits (OAT less than 16°C)?
A: 4 starts, 60 seconds between each, then 30 mins off.
3. Q: Starter limits (OAT greater than 16°C)?
A: 2 starts, 60 seconds apart, then 30 mins off.
4. Q: Motoring/ignition off limits?
A: 2 mins on, 5 mins off, 2 mins on, 30 mins off.
5. Q: Ignition limits?
A: 2 mins on, 3 mins off, 2 mins on, 23 mins off.
6. Q: OAT limit for a dual engine start?
A: 25°C at sea level (figure 5-5).
7. Q: Definition of a start cycle?
A: A start cycle is defined as starter initiation, acceleration of the output drive and starter dropout.
8. Q: When is the 60 second delay between start attempts not required?
A:The 60 second delay between start attempts is required any time a start is aborted except in emergencies.
9. Q: When an engine is started from the other engine, what position must the AIR SOURCE ECS/START switch be in?
A: ENGINE
10. Q: When an engine is started from the APU, what position must the AIR SOURCE ECS/START switch be in?
A: The AIR SOURCE ECS/START switch can be in any position (APU, OFF, or ENGINE).
11. Q: TGT limits?
A: 0-810 continuous, 810- 851 30 mins, 851-878 10 mins, 878-903 2.5 mins (contingency power), 903-949 12 secs (lockout).
12. Q: Actual TGT limiter values (where Nr decays)?
A: 862-876 C-power off, 886-901 C-power on.
13. Q: Engine oil pressure limits?
A: 22 psi minimum, 22-26 psi idle, 26-100 psi normal, 120 psi maximum.
14. Q: Engine oil temperature limits?
A: -50-135°C normal, 135-150°C 30-minute limit, 150°C maximum.
15. Q: Ng limits?
A: 0-98 continuous, 98-102 30 mins, 102-105 12 secs.
16. Q: Np limits?
A: 96-105 continuous, 105-120 12 secs, 20-40 and 60-75 avoid.
17. Q: Np overspeed?
A: 120 +/- 1.
18. Q: Stabilator airspeed limits?
A: 0° 150 KIAS, 1-10° 100 KIAS, 11-20° 80 KIAS, 21-30° 60 KIAS, 31-40° 45 KIAS.
19. Q: Ng overspeed?
A: 110 +/- 2.
20. Q: After engine start Ng check?
A: Above 63, within 3% of each other.
21. Q: Torque check following rotor engagement?
A: Matched within 5%.
22. Q: Post shutdown fire is indicated by?
A: TGT rising above 540°.
23. Q: Dual engine torque limits?
A: 0-212 combined transmission torque continuous (0-106 continuous), 212-254 combined transmission torque 10 secs (106-127 10 secs).
24. Q: Single engine torque limits?
A: 0-135 continuous, 135-144 10 secs (input module limit).
25. Q: Transmission oil pressure limits?
A: 20 psi minimum, 20-30 idle, 45-65 psi steady state level forward flight, 30-65 psi continuous and maneuvering, 65-130 precautionary, 130 maximum.