MO11 wrote:lightsaber wrote:The limit of validity of an MD-80 is 110,000 FC and 110,000 FH.
http://www.boeing.com/commercial/aeroma ... ticle2.pdf
The only way to use up that durability in a mere 20 years is 13.7 hours or cycles everyday. Most of these are being retired with 50,000+ hours remaining and even more cycles. Most likely they are done due to fuel burn and the lack of spare parts. But only Hawaiian wears out a DC-9 family in 20 years (on cycles).
Last I looked, only JetBlue was on track to wear out an A320 in 20 years (on hours, 120,000FH limit). IIRC, LH takes 26 (also on hours), not 60,000 FC limit.
With a life of 110,00 FC and 125,000 FH, I'm not aware of a 737 used up in 20 years. Has it happened?
I knew something wasn't right - per that article, the MD-80 is good up to 150,000 hours.
The DC-9 shows 110,000 hours, and Delta's N923RW had 109,294 when it retired in 2010.
She... My error copying the cycle value for hours.
Either way, my point stands. These are not worn out aircraft. So instead if being retired with about 60,000 FH with 50,000 FH left, it will be 90,000 FH more to go with the 150,000 FH life.