Re: Zen and the Art of Flying Saucer Maintenance

James Rogers (
Sat, 12 Jul 1997 21:03:51 -0700

At 04:57 PM 7/12/97 -0400, Michael Lorrey wrote:
>Michael M. Butler wrote:
>> >Man
>> >made air vehicles have always had maintenance requirements of between
>> >20-100 man hours per flight hour.
>> I'm not sure that your low end number is literally true. I'm going to
>> visit my local F.O.B pretty soon, and I'll try to get their numbers
>> for the low end. It may (in fact, I expect it will) depend on the
>> timescale you measure.
>The low end number applies to several WW I & II military craft that were
>rugged and reliable. Most of their additional maintenance had to do with
>battle damage.

I suspect a significant part of the increase in maintenance time is the
result of regulations forcing the services and maintenance to take place
more frequently. That has certainly been the case for civilian aircraft.

-James Rogers