TH-73 Limits
N1 minimum - Answer 51%
N1 cautionary - Answer 51-60%
N1 continuous operation - Answer 60-100.1%
N1 takoff/max - Answer 100.1-103.2%; 103.2% max (5 min)
N1 transient - Answer 103.8% (30 sec)
N1 note #2: IDLE N1 may decrease below ______ when the generator and
other aircraft systems are turned on - Answer 60%
N2 minimum - Answer 95%
N2 cautionary - Answer 95-101%
N2 continuous operation - Answer 101-103%
N2 takeoff/max - Answer 103% max
N2 transient - Answer 108% (10 sec)
N2 caution #1: An N2 indication of ______ corresponds with an actual N2
value of ______ to ______. The N2 transient region begins at ______. Protracted
operation at N2 values of ______ should be avoided to minimize the possibility
of N2 overspeed - Answer 103%; 102.5%; 103.49%; 103.01%; 103%
ITT continuous operation - Answer 755 °C max
ITT takeoff/max - Answer 755-810 °C; 810 °C max
ITT transient - Answer 860 °C (5 sec)
ITT start max - Answer 870 °C
ITT start transient - Answer 980-1090 °C (2 sec); 1090 °C max
ITT note #1: a linear variation applies above ______, ten seconds, and ______,
two seconds - Answer 870 °C; 980 °C
TRQ continuous operation - Answer 100% max
TRQ takeoff/max - Answer 100-108.5%; 108.5% max (5 min)
TRQ transient - Answer 115% (6 sec)
NR pwr-on minimum - Answer 95%
