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#396613 - 08/13/19 12:11 PM Re: Powermatic Skyhawk (P172D) Owners on Here?? [Re: Mayday]
MIKE JG Offline
New Member

Registered: 01/11/15
Posts: 16
Loc: Ohio
Such good info on this thread, I need to come back to this more often!!!

I apologize as I just don't get to this forum often enough.
Discover Aviation Center Flying Club

#396614 - 08/13/19 12:18 PM Re: Powermatic Skyhawk (P172D) Owners on Here?? [Re: jnpjohnson]
MIKE JG Offline
New Member

Registered: 01/11/15
Posts: 16
Loc: Ohio
Originally Posted By: jnpjohnson
Mike, Does your AVCON STC list the Composite MT prop as an option? Did you replace prop to get out from under the Hartzell AD? I just had my Hartzell prop overhauled with a new Hub to terminate the AD recurrent inspections.

The AVCON STC does not list the MT composite propeller. I doubt Bob ever envisioned this STC using anything other than a Hartzell prop. However the MT Prop STC can be used on any O-360 engine that uses a hydraulic propeller governor. There's a blanket statement on the MT Prop STC that says "Compatibility of this design change with previous modifications must be determined by the installer" which was done by the IA that installed it.

Yes we did this to get out from under the recurring AD which was eating us alive, the aircraft is part of a flying club so was racking up 200-300 hours a year.
Discover Aviation Center Flying Club

#396632 - 08/14/19 08:49 PM Re: Powermatic Skyhawk (P172D) Owners on Here?? [Re: MIKE JG]
RMEAV8R Online   content
New Member

Registered: 06/29/18
Posts: 8
Loc: texas
What kind of performance improvement did you get with the MT Prop? I have a 175A with the avcon 180/constant speed conversion and have been considering the MT or Hartzell trailblazer composite.

#396669 - 08/16/19 02:11 PM Re: Powermatic Skyhawk (P172D) Owners on Here?? [Re: RMEAV8R]
Jon H Offline
Pilot in Command

Registered: 05/04/19
Posts: 458
Loc: Arizona
my neighbor has a 58 175, about 5-10 years ago, the engine was getting tired so previous owner found a good deal on the GO-300D that came out of a P172D. he converted it to a GO-300C and put fixed pitch prop on it. I believe the engine came out of Ireland but was in Singapore before that. so that engine is a world traveler!!

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