What is the redline limit for APU EGT?

The correct limit for APU EGT, or Auxiliary Power Unit Exhaust Gas Temperature, is 807 Degrees Celsius. This figure is critical for ensuring the safe operation of the APU, which provides electrical power and bleed air for engine starting and air conditioning while the aircraft is on the ground.

Exceeding this limit could lead to significant damage to the APU, as high exhaust gas temperatures could indicate a malfunction or overloading condition. Operating within the specified redline helps pilots and maintenance crews avoid potential failures and maintain the longevity of the equipment.

In the context of aircraft operations and limitations, knowing and adhering to the APU EGT redline is vital for safe aircraft operations.