Originally Posted by
JohnBurke
How is that remotely relevant to the conversation, and who has suggested this except...you?
Would you experience a complete electrical loss, start the APU at cruise altitude, and continue to the destination? Given that most APU's have start and operation ceilings and some have flight limitations, inflight use is for emergency operations, and not to continue to a destination.
You were the one who said that there is no backup generator on the 737 when in fact the APU is the backup. For your information the max altitude that the APU on the 737NG can operate to provide electricity is 41,000 ft which is also the max altitude of the aircraft. Furthermore there is no time limit on the operation of the APU for the 737NG and the MEL states that if one generator is inop the APU’s generator will be use for any flights in place of the inoperative generator. So using the generator on the APU is not an emergency procedure and it is perfectly safe to continue to the destination using it.