Average lifespan of a business jet?

GrtArtiste wrote:
There's a rumor floating around the office that my company is
considering purchase of a used bizjet. They have a reputation for
trying to do things on the cheap and seem to be partial to Citations
because we're located in a town that has a Cessna repair facility.
I've seen multiple listings for such planes varying from 15-20 years
and older with TT ranging from as few as 3700 up to 10000-12000. So I
wonder...how old (how many hours) does such a plane get before it has
(generally speaking) outlived it's usefulness? Depending on what they
decide to buy, I'll have to determine whether or not I want to fly in
it.

GrtArtistea non-pilot, not wanting to end up like Payne Stewart

Mostly depends on how well it was maintained.
Michelle

On Feb 13, 8:37 pm, Michelle P
wrote:


Mostly depends on how well it was maintained.
Michelle

Of course it does. Let's assume all required maintenance was above-
average in quality. I guess what I'm looking for is an age-hour limit
for my comfort level.

GrtArtiste

The number of pressurizations is one factor. Something like 10,000
(that would be 10,000 pressurizations, not hours) is getting up there.
The other item is engine rebuilds are horrendously expensive and can
swamp the cost of purchase. Don't believe Cessna's figures on per hour
running either. They are way optimistic.

Having said all that, there are some very useful, well used business
jets out there.

My advice would be to get an expert. in CESSNA CITATIONS. Probably a
Citation mechanic, and pay him to help you decide which one.

"Doug" wrote in message
ps.com...
The number of pressurizations is one factor. Something like 10,000
(that would be 10,000 pressurizations, not hours) is getting up there.
snip

I have recently flown a 737 with over 74000 cycles.

("Private" wrote)
The number of pressurizations is one factor. Something like 10,000 (that
would be 10,000 pressurizations, not hours) is getting up there.

I have recently flown a 737 with over 74000 cycles.


Is taking off, flying up to altitude, then landing, one cycle?


10 Cycles Per Day (x) ...

10 years (3,650 days) = 36,500 cycles

20 years (x) ..10 c.p.d. = 73,000 cycles
25 years (x) ...8 c.p.d. = 73,000 cycles
40 years (x) ...5 c.p.d. = 73,000 cycles

WOW!


Montblack

Montblack wrote:

("Private" wrote)

I have recently flown a 737 with over 74000 cycles.


Is taking off, flying up to altitude, then landing, one cycle?


10 Cycles Per Day (x) ...

10 years (3,650 days) = 36,500 cycles

20 years (x) ..10 c.p.d. = 73,000 cycles
25 years (x) ...8 c.p.d. = 73,000 cycles
40 years (x) ...5 c.p.d. = 73,000 cycles


How many cycles did the Aloha convertible have? IIRC it was something like
90,000 but a 737 might be designed to different life expectations
--

regards

jc

LEGAL - I don't believe what I wrote and neither should you. Sobriety and/or
sanity of the author is not guaranteed

EMAIL - and are not valid email
addresses. news2x at perentie is valid for a while.

Not a problem, Monty...we had a couple of Fat Alberts on the line when I
"retired" from PSA in the late '60s. The 737 was BUILT for the milk
runs...our longest run was an hour; many of them were 45 minutes or so. You
can get a dozen cycles a day in at that rate and that was 40 years ago.

A "cycle" is depart, gear up, gear down, arrive. 99.999% of the time that
also means a pressurization.

Jim

"Montblack" wrote in message
...
("Private" wrote)
The number of pressurizations is one factor. Something like 10,000 (that
would be 10,000 pressurizations, not hours) is getting up there.

I have recently flown a 737 with over 74000 cycles.


Is taking off, flying up to altitude, then landing, one cycle?


10 Cycles Per Day (x) ...

10 years (3,650 days) = 36,500 cycles

20 years (x) ..10 c.p.d. = 73,000 cycles
25 years (x) ...8 c.p.d. = 73,000 cycles
40 years (x) ...5 c.p.d. = 73,000 cycles

WOW!


Montblack

On Wed, 14 Feb 2007 08:52:42 -0800, "RST Engineering"
wrote:

Not a problem, Monty...we had a couple of Fat Alberts on the line when I
"retired" from PSA in the late '60s. The 737 was BUILT for the milk
runs...our longest run was an hour; many of them were 45 minutes or so. You
can get a dozen cycles a day in at that rate and that was 40 years ago.

A "cycle" is depart, gear up, gear down, arrive. 99.999% of the time that
also means a pressurization.

Isn't there a "check or inspection" some where around 10,000 to 12,000
hours that amounts to almost a complete airframe rebuild?


Roger Halstead (K8RI & ARRL life member)
(N833R, S# CD-2 Worlds oldest Debonair)
www.rogerhalstead.com