Aborted Engine Start
Airspeed Unreliable
APU Fire
Cabin Altitude or Rapid Depressurization
WITHOUT DELAY, DESCEND TO THE LOWEST SAFE ALTITUDE OR 10,000 FEET, WHICHEVER IS HIGHER
TO DESCEND:
MOVE THE THRUST LEVERS TO IDLE
EXTEND THE SPEEDBRAKE
IF STRUCTURAL INTEGRITY IS IN DOUBT, LIMIT AIRSPEED AND AVOID HIGH MANEUVERING LOADS
DESCEND AT Vmo/Mmo
Dual Engine Failure
Engine Fire or Severe Damage or Separation
Engine Limit Or Surge Or Stall
Engine Tailpipe Fire
Do the ABORTED ENGINE START checklist for one or more of the following abort start conditions:
Engine warm-up requirements:
Engine oil temperature must be above the BOTTOM of the temperature scale.
Engine warm-up recommendations:
* Use a thrust setting normally used for taxi operations
Engine After Landing
Engine cool-down recommendations: • Run the engines for at least 3 minutes.
Icing conditions exist when the OAT (on the ground) or TAT (in-flight) is 10 C or below and any of the following exist:
CAUTION: Do not use engine anti-ice when OAT (on the ground) is above 10°C. Do not use engine or wing anti-ice when TAT (in-flight) is above 10°C.
When engine anti-ice is required and the OAT is 3°C or below, do an engine run up, as needed, to minimize ice build-up. Use the following procedure:
- Run-up to a minimum of 60% N1 for approximately 30 seconds duration at intervals no greater than 30 minutes
During flight in moderate to severe icing conditions for prolonged periods with N1 settings at or below 70%, or if fan icing is suspected due to high engine vibration,
increase thrust on one engine at a time to a minimum of 70% N1 for 10 to 30 seconds every 10 minutes.