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.
Specific to your question, the cruising altitude for most long-distance flights is somewhere between FL200 an FL300 (20,000 to 30,000 feet above sea level) Here are some quick figures for the temperatures at these altitudes (assuming a surface temperature of 59Â° degrees Fahrenheit.