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The length of time any one aircraft remains in service is influenced by many factors. The level of maintenance throughout it's service life is one major one. The better the quality of maintenance, the longer an aircraft can stay in service. The average service life of a jet airliner is approximately 30-35 years. Fighter jets tend to have shorter service lives due to the stress inflicted on the airframe during very sharp turns. However most of the USAF's B-52 long range bomber fleet is over 40 years old and still flying strong.
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What is the mission of the airplanes that leave contrails?
To be an airplane with jet engines? All jet airplanes leave contrails.
Are jet airplanes faster than turbo prop airplanes?
Yes.
How do jet airplanes get of the ground?
Gravity.
Jet airplanes fly in the?
Air
What are benefits for jet airplanes?
they fly
How many jet airplanes are flying at the same moment around the world?
five jet
How long is a jet plane?
Jet powered aircraft are built in different lengths. One of the smallest is the Bede BD-5 which measures close to 13' in length and one of the largest airplanes built, the Antonov An-225 is 275'7'' long.
What color is the black box in jet airplanes?
fluorecent orange
Can jet airplanes go backwards on the ground without help?
No
Is a jet pack faster than a airplane?
No. Airplanes are faster.
How do airplanes generate thrust?
With an engine--either prop or jet.
in which layer of the atmosphere are jet airplanes able to travel?
the stratosphere
