Re: A/C accumulated time?

Date:         16 Aug 99 22:28:14 
From:         Ernie Fidgeon <>
Organization: MBnet Networking Inc.
References:   1 2
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"Philip J. Kuhl" wrote:
> ... I vaguely recall from decades
> past that after an airliner had been in service for about seven years in the
> U.S. essentially all of its parts had been replaced.

Cycles are important as well.  Not all the parts are replaced.  The
Fuselage skins may be replaced over time if enough cracking or corrosion
is present.  the wing skins cannot be replaced, only reinforced where
local fatigue problems arise.  Many of the "units" like gear, pumps etc
are replaced.