MD500 RUN UP Flashcards
How to start the engine
Cyclic stick- trimmed NEUTRAL, friction ON
Collective stick- FULL DOWN, friction ON
Twistgrip- CUTOFF
Gen switch- OFF
Start pump- as required
Rotors- CLEARED
Start/Ignition- Press and hold
Rotate twistgrip to ground idle for ignition when N1 indicates 12 to 15 percent
TOT limits for starting/light off?
TOT Max for Light off- 150⁰c
What speed limitations to look for in the N1 GAS PRODUCER for CONTINUOUS operation?
Max N1 speed continuous: 105%
What speed limitations for N1 GAS PRODUCER at GROUND IDLE operation?
N1 speed ground idle 64%
What is the MAX TORQUE limit for takeoff
5 minutes, 87.2 psi torque
What is the MAX TORQUE limit for CONTINUOUS?
Max continuous,
81.3 psi torque with TOT at or below 738⁰c
74.3 psi torque with TOT greater than 738⁰c
What is the MAX TOT for TAKEOFF?
Max TOT takeoff (5 minutes) 810⁰c
What is the MAX TOT for STARTING?
Max TOT Starting/light off, 150⁰c
What is the MAX TOT for CONTINUOUS?
Max TOT Continuous,
755⁰c with TQ at or below 74.3 psi
738⁰c with TQ greater than 74.3 psi
What are TRANSIENT limits for TOT at START/SHUTDOWN?
Start/Shutdown: 810⁰c to *927⁰c for up to 10 seconds with momentary peak temp of 927⁰c for no more than 1 sec
What are TRANSIENT speed limits for the N1 GAS PRODUCER?
106% speed for 15 seconds
What are the starter limitations?
1 min on, 1 min off, 1 min on, 23 mins off
What is a hot start?
What a turbine engine starts and exceeds the TOT limits
What causes a hot start?
Insufficient airflow, incorrect fuel scheduling, and slow engine accel.
How do you shut off the engine?
Pilot twistgrip- Deceleration check
Twistgrip- GROUND IDLE detent-hold for 2 minutes
Collective stick- FULL DOWN
Cyclic stick- TRIM NEUTRAL
Bleed air and electrical-OFF
Pedals- CENTERED
Twoistgrip- GROUND IDLE to CUTOFF
After closing twistgrip to CUTOFF, dual tach needle.split should occur with Nr legging behind N2
