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1 28th February 22:05
carl orton
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Default TBO Questions O-200


I'm getting conflicting information, so pitch in to set me straight.

In the archives, I've seen several instances where owners have claimed
taking their O-200's over 3000 hrs before overhaul. I believe that with
regular oil ****ysis, this could probably be true. HOWEVER, I've seen other
posts hinting that, at annual, the AI may not sign off as airworthy if it's
more than 200 hrs over TBO. What's realistic? (I'm looking at a plane with
good compressions and good oil ****ysis, but it's right at TBO).

Also, at what year was O-200 TBO increased from 1800 hrs to 2000 hrs? And,
does that increased TBO apply to all the older engines?

Thanks;
Carl
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2 28th February 22:05
dave
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Default TBO Questions O-200


Engine hours is not a factor for an annual inspection on a part 91 aircraft!
If the IA will not sigh it off, get a new IA
Good compressions, oil pressure and your comfort determine how long an
engine should stay on the aircraft.

Dave
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3 28th February 22:05
g.r. patterson iii
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Default TBO Questions O-200


I don't think it was.

George Patterson
God grant me the senility to forget the people I never liked anyway, the
good fortune to run into the ones I like, and the eyesight to tell the
difference.
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4 28th February 22:06
jgalban
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Default TBO Questions O-200


I have knowledge of a few clubs that took their O-200s to 2500-3000
hrs. Major factors were that the planes were flown several hours per
day and used autogas (no lead problems with valves).

A few years ago there was one insurance underwriter that would not
renew with an engine past TBO. I've heard of some AIs that wouldn't
sign off a past TBO engine that otherwise had no problems. In both
cases the solution is to find a different underwriter/AI. The engine
is going to wear out eventually, so it'll be up to you to determine
what you're comfortable with. There's no regulatory reason to overhaul
at TBO.

My AI recommends that I continue to run past TBO with oil ****ysis.
1st time anything expensive comes up, overhaul it.


As far as I know, the O-200 TBO is still 1800 hrs.
John Galban=====>N4BQ (PA28-180)
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5 29th February 01:03
carl orton
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Default TBO Questions O-200


Hmmm... I was wondering about that 2000 hr figure. I saw a few C-150's for
sale that said something like "1750 SMOH, 2000 TBO".

I've been unable to find anything on the aviation sites about the alleged
increase in TBO, so I thought I'd ask the collective experts here.

Thanks for setting me straight!
Carl
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6 29th February 01:03
g.r. patterson iii
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Default TBO Questions O-200


The Cessna 152 has a 2000 hour TBO on the O-235. Perhaps that's what you saw.

George Patterson
God grant me the senility to forget the people I never liked anyway, the
good fortune to run into the ones I like, and the eyesight to tell the
difference.
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7 29th February 01:03
j. severyn
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Default TBO Questions O-200


And if the O235-L2C on the 152 or 'Tommyhawk' is rebuilt with the right
parts it then gets a 2400 hour TBO.
O200 is still 1800 to my recollection.
John Severyn
@LVK
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8 29th February 01:04
matthew p. cummings
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Default TBO Questions O-200


The TBO is 1800 hours. There are many people who do get more than that
out of them, but many more do not.

From what I can gather, most assume 1500 hours before a major needs to be
done, and if you go beyond it's good. The biggest factor in reaching or
exceeding TBO is how often you fly it, so fly it all the time and you'll
make TBO, fly it once a month and you may not. Environment also affects
TBO as well, so that's one of the other reasons you'll see some listed as
being so far beyond TBO.

But, no matter how you dice it, TBO is 1800 hours max. The 152 could have
at most 2400 hours, but you had to do something to the engine to gain the
additional hours. I'm not sure, but I think it had to have different
pistons? Somebody would know for sure, I don't since I fly behind an
o-200 myself and am only familar with it.
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9 29th February 01:04
steve beaver
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Default TBO Questions O-200


C152 has a Lycoming O-235 which has a longer TBO

<snip>
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