Early Air
Topic Author
Posts: 624
Joined: Wed Jan 17, 2001 6:53 am

Retire Boeing Aircraft

Sun Feb 18, 2001 4:04 pm

I was just wondering if there is an age that boeing suggests to retire an aircraft?
 
watewate
Posts: 2216
Joined: Sun Nov 12, 2000 6:00 am

RE: Retire Boeing Aircraft

Sun Feb 18, 2001 4:12 pm

Age of an a/c is not true indicator of its use. Number of cycles is the most logical measuring stick for airlines do decide whether the a/c will stay or go. Other considerations, such as age (obsolete technology), fleet commonality, availability of spare parts, noise restrictions, etc... play parts in the decision as well.
But generally speaking, old airplanes are the first to go, rather than new ones. Then again, DC3s out there defy that logic.
 
Philly Phlyer
Posts: 356
Joined: Sun May 23, 1999 12:05 pm

RE: Retire Boeing Aircraft

Mon Feb 19, 2001 1:32 am

Watewate:

The reason that DC3s "defy that logic" (as you posted) is because they are not pressurized. That is what is most tough on an airframe during cycles. For non-pressurized aircraft, the cycles still are important since there is a lot of stress on take-off and landing (especially landing). These, however, do not produce anywhere near the problem of presurization over and over again.

If you keep blowing up a balloon and letting the air out again and again, it gets easier to blow up the balloon as time goes on. This is because the balloon gets weaker each time (each cycle) until it eventually breaks. This is what happened to that Aloha 737 that "lost its ceiling" about 20 years ago.
 
Guest

RE: Retire Boeing Aircraft

Mon Feb 19, 2001 4:31 am

That Aloha flight had a bit of help from salt corrosion, though... but you're right- same thing applies...

Popular Searches On Airliners.net

Top Photos of Last:   24 Hours  •  48 Hours  •  7 Days  •  30 Days  •  180 Days  •  365 Days  •  All Time

Military Aircraft Every type from fighters to helicopters from air forces around the globe

Classic Airliners Props and jets from the good old days

Flight Decks Views from inside the cockpit

Aircraft Cabins Passenger cabin shots showing seat arrangements as well as cargo aircraft interior

Cargo Aircraft Pictures of great freighter aircraft

Government Aircraft Aircraft flying government officials

Helicopters Our large helicopter section. Both military and civil versions

Blimps / Airships Everything from the Goodyear blimp to the Zeppelin

Night Photos Beautiful shots taken while the sun is below the horizon

Accidents Accident, incident and crash related photos

Air to Air Photos taken by airborne photographers of airborne aircraft

Special Paint Schemes Aircraft painted in beautiful and original liveries

Airport Overviews Airport overviews from the air or ground

Tails and Winglets Tail and Winglet closeups with beautiful airline logos