Had the air conditioner compressor replaced under warranty and just purchased a new compressor in 2014. That's three compressors in 16 years. Also replaced the blower motor and capacitor along with the TXV valve and filter dryer in 2014. The Puron has escape over the winter of 2014 and again in 2015.
The cruising altitude of a 747 depends on weather conditions,  weight of the aircraft, and the amount of traffic on the other  flight levels. Its average cruising altitude i â¦ s around 33,000 feet.
    Most jet airliners currently used in transatlantic service have maximum speeds of approximately 568 mph, and are typically operated at cruising speeds of 530 to 54 â¦ 0 mph. The supersonic Concorde airliner, used from 1976 to 2003, had a cruising speed of 1330 mph.n approach (landing) speed is determined by the type of plane, weight, weather and the condition of the runway. A heavy 747-400 might have a landing speed of 160 KIAS (knots â¦ indicated air speed) or about 185 mph. 2 people found this useful.