"Bravo8500" wrote in message
oups.com...
Good info.

If an mu2 (pmodel) has 2400/2400 total time since new on the engines,
but 1500 since hot section, will this be the case: a hot section in 300
hours at 2700, and an overhaul 900 hours later at 3600 hours? Why would
you think a hotsection was done at 900hours; aren't turbines supposed
to last till tbo?


Is this close:
1800 = hot section 50k/50k
3600 = overhaul 100k/100k
5400 = ?

The engines need a hot section inspection at 1800hrs, another hot section
inspection along with a gearbox inspection at 3600 and overhaul at 5400hrs.
You only get the 5400hrs if the engine passes the gearbox inspection.

So yes, the engines will need a HSI in 300hrs and it would probably make
sense to do the gearbox inspection at the same time. Something must have
happened to the engines that made a HSI at 900hrs nessesary. I would find
out what happened.

Turbines last until TBO unless something bad happens to them like FOD
injestion or overtemping.

Your prices are probably too high for the HSI and too low for overhaul. It
really depends on the engine though and how it was operated. Shutdown
without a cool down period and/or short cycles will lead to more expensive
HSI and overhaul expense. Fuel nozzle maitenance is also critical.

You really need to know as much as possible about the engines and hopefully
the training of the current pilot. You want to know if he goes to
FSI/Simcom/Reese Howell annually and also if he goes to PROP and if he has
taken the Honeywell TPE-337 course. Buying an airplane with junk turbine
engines could be a *really* big mistake. I have heard of it happening and
the new buyer being into a F model for the price of a Marquise.

BTW that is a really low time P model. I would find out why. Maybe it sat
on the bottom of Lake Michigan for 20yrs? :-) At the very least it has to
have been flown by pilots who did not fly it much. Most P models probably
have over 5000hrs.

Mike
MU-2