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How about this Trinidad?

SB 569: Dunno, I have not |yet ?] performed a pre-purchase inspection on it.

Turbos: Probably, but could be insufficient oil supply as well.

Not sure about the TB21 install, but on the Cessna T210 & P210s, the turbo oil supply line comes off a " Y " AN fitting, one line going to the turbo and the other to the oil pressure gauge.

Very easy for a mechanic to get the two mixed up since both have AN-3 flared fittings.

The problem is that the oil pressure gauge side has a very small restrictor …

You guessed it, if the two were mixed up, the turbo bearings would get trashed after a few hundred or so hours TIS. Of course, this would be repeated until someone figures it out.

Last Edited by Michael at 13 Dec 09:38
FAA A&P/IA
LFPN
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