Limitations Flashcards
(23 cards)
What is VNE with 1 or more doors removed?
130kt IAS if 2501lb or more
120kt IAS if <2500lb
Normal Operating RRPM range
487 to 492 RRPM (102-103%N2)
Power OFF Min. And Max RRPM?
Power OFF
MIN. = 415 RRPM (87%N2) 4 blade T/R
MAX. = 523 RRPM (109%N2)
Torque limits: Maximum Takeoff?
87.2 psi. 5 minutes only
Torque limits: Max. Continuous
81.3 psi, TOT 738c or less
OR
74.3 psi, TOT >738c
Torque limits: Transient?
87.3 - 93.0 psi, 15sec max @ 103% N2
93.1 - 97.6 psi, 3 sec max @ 103% N2
TOT limits? Takeoff.
Max. T/O 810c (5 min)
TOT Max. STARTING?
Aka ‘light off’
150c
TOT Max. Continuous?
755c @74.3psi or less
> 74.3psi, 738c
TOT Transient?
Start/shutdown?
Power changes in flight?
Start/Shutdown, 810c and above 10sec or less, peak 927c not more than 1 sec.
Power changes in flight = 810c - 843c for 6 sec.
N1 Speed Limits?
(Gas Producer)
Max continuous 105%
Minimum 60% (ground idle)
- N1 ground idle recommended 64-65%. Can be reduced to min. of 60% to maintain N2 below 70%.
N1 Transient limit?
(Gas producer)
106% for 15 sec.
N2 speed avoid range?
(Power Turbine)
Operations between 71 - 88% prohibited.
Dwell time of no more than 1 second allowed.
Max. Operating Density Altitude?
16,000ft
VNE IAS?
156kt IAS
What is VNE in Autorotation?
131kt IAS
(Barber pole on ASI)
What is VNE when carrying <35lb fuel?
130kt IAS
Starter operation time limitations
1 min. on 1 min. off
1 min. on 23 min. Off
Flight is prohibited if battery temp. exceeds ___c?
71c
What is max. continuous generator output?
85 amps
85 - 150 amps, 10 min. limit.
> 150 amps, 2min. limit post starting.
What is VNE with door/s off?
130kt IAS
Engine oil temp. limits for flight
0c - 107c
Engine oil pressure limits?
50 - 130psi with following minimums:
115psi @ 94% N1 or above
90psi @ 79% N1
50psi @ 79% N1
