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Has anyone replaced the old Edo-Aire governor with a Woodward governor? My mechanic says the current control arm bracket doesn’t match up so I spoke with Dan at Lasar and ordered the bracket he said I needed. Mechanic received it today and it’s the same bracket as the old one. Mechanic is aware of the 6 screws and the ability to turn the case but he said every configuration doesn’t work. The Woodward is part # B210-345. Dan said he’d send me part #660117-000. The new one says 660117-001 but I doubt the 001 is a big difference. We’re going on a month here trying to figure this out. It’s driving me nuts. I’m a new owner and the plane is at a remote airport - governor quit on us on the flight home. What I can’t seem to figure out is if that specific woodward is the correct part number for my plane and I’m more confused because when I spoke with the shop that replaced the old one (Aircraft Accessories of Oklahoma) and explained how it doesn’t fit the bracket, he said he could make me a different case for the governor. Is that even a thing? We’ve tried rotating the case and even putting the bracket on backwards. He said, he’s tried everything and they just don’t line up. I chose the Woodward because I was told it was a “direct replacement” for the Edo-Aire and the PCU would require significant modifications. The PCU dealer told me that I’d be better off going with the Woodward if my mechanic hasn’t done a PCU conversion before and since I don’t plan on keeping the plane for a significant amount of time the extra cost wasn’t worth it. I’d love to get my plane home someday. Any help is appreciated. I attached picture of the Woodward and brackets.

Had a weird issue with prop control on descent. Shortly after beginning my descent into KMLB, I lost power, followed by an extremely loud buzzing coming from the engine. Tach showed immediate rise to 2550, so I followed the prop overspeed checklist. Nursing the throttle, I found a sweet spot where I could barely hold altitude at around 100 kts. I was close enough to KMLB that I was able to declare emergency and safely land directly onto the runway. This buzz was loud enough that it was difficult to understand the tower over an ANR headset. Upon landing, checked airplane over, no oil anywhere on the bird, or dripping onto the ground, no grease on the propeller blades, and no loss of oil as I checked the oil quantity the next day. In fact the oil was freshly changed, and it still had the sweet honey color of fresh oil. I pulled the engine monitor data, and correlated it to the flight path. Here is what the engine monitor data showed. Oil Pressure- nominal, no change through the entire flight. Close look at the tach data showed variation in tack readings from 2480 to 2510 regularly over this leg. I don't really see any standouts when I review the engine data. When the incident occurred, there was a significant spike in revolutions to over 2550 rpms, but then returned to 2410. Going to the mechanic tomorrow. Suspect a leaking propeller piston, or flat spot in governor? Thoughts welcome. Especially the source of the loud buzz!!

Anyone know what the make and model number of this prop governor? Fuel pump is in the way sorry best pic I have. (it's leaking oil) It says Garwin on it and numbers stamped on the side 5320. I searched the logs and there's nothing in there for the prop governor ever being worked on or replaced. It's in a Mooney 1968 M20C Lycoming engine O-360-A1D with a 3 blade Harzell prop. I would like to replace it with a PCU 5000 hopefully a drop in replacement. I would rather replace it with a new one since I have the mags, vacuum pump, battery box, lower cowling and hoses out of the way.

I've had my M20C about 6 months and had never flown behind a constant speed prop prior to this, so I don't know what's normal. After I level off for cruise, I usually set power at 23 MP, 2300 rpm. Then I futz around with trim and mixture for a bit. When I'm done with this, rpm usually reads about 2350, and then I pull it back again to 2300. It might drift up again to 2350 one more time, and then generally it stays put after pulling it back again. But yesterday I was surprised to notice it had come up to 2400 about an hour into the cruise during my scan- I may have neglected checking for a while, but it had never drifted so far off before. So to test the governor, I pitched up firmly and slowed to 120mph IAS. Then I pitched down and came up to 170mph IAS - 20 mph above my cruise IAS. The governor did its job and held 2300 rpm like a rock the whole time. My question is - is the amount of drift I am seeing in cruise concerning or in the range of normal? It has a Top Prop which was installed in 2011 but the last governor overhaul that I can find in the books was in '97.

This PCU5000 prop governor MODEL ATH-1 came off of a Mooney after less then 100 hrs of use. Works well no problems at all. Selling because it was inadvertantly put on in error. If your Mooney has a Hartzell prop governor this is a direct replacement. $650 plus $20 for UPS ground conus. For pictures, search ebay for item number 141529230003. email only: spence@dancefurniture.com

I have an Ovation 2GX with the 310 hp STC and 3 blade prop. I have 1250 hours and 7 years on this prop assembly. The engine (1500 hrs) is currently having all 6 cylinders overhauled (1st cylinder replacement). Two questions: 1) is there any reason I should have the prop governor overhauled now 2) any idea of how much it should cost? Thanks.

My new M20F flies well and appears to be putting out full rated power. But I have yet to see an honest 2700 RPM on the tach. 2625 is the most I can get in cruise, even at low altitude. It's a digital tach so I doubt this is an issue with tach error. I don't intend to do a lot of cruising at 2700, so it's not a big deal, but I'd still like to know why I can't get that last 75 RPM. Any thoughts? Maybe a cable or prop governor adjustment?