- *1. PCL - OFF
- *2. STARTER SWITCH - AUTO/RESET
- *3. PCL - IDLE, ABOVE 13% N1
- *4. Engine instruments - Monitor ITT, N1, and oil pressure
- IF AIRSTART IS UNSUCCESSFUL:
- *5. PCL - OFF
- *6. FIREWALL SHUTOFF handle - Pull
- *7. Execute Forced Landing or Eject
- IF AIRSTART IS SUCCESSFUL:
- *8. PCL - As required after N1 reaches IDLE RPM (approximately 67% N1)
- *9. PEL - Execute
The Immediate Airstart (PMU NORM) procedure should be used following engine failure at low altitude when thrust requirements are critical, or when time and conditions do not permit completing a full airstart procedure.
Monitor ITT, N1, fuel flow, and other engine indications. Typically, in excess of 1200 feet will be lost for each attempt. The propeller will unfeather and accelerate to operating RPM approximately 20 seconds after N1 reaches 45%. Useful power will be available after 40 seconds from starter engagement.
W: Airstart attempts outside of the airstart envelope may be unsuccessful or result in engine overtemperature. Consideration should be given to ensure airstarts are attempted within the airstart envelope (125-200KIAS for sea level to 15,000 feet, or 135-200KIAS for 15,001 to 20,000 feet).
- W: ● Do not delay ejection while attempting airstart at low altitude if below 2000 feet AGL.
- ● PCL must be in OFF to feather the propeller, and ensure proper starter, ignition, boost pump, and PMU operation during airstart.