pgrusenmeyer

I'm no expert, but seems like 35 years safe operation on this airplane should count for something. Plus is it approved for the M20B, same airframe and same engine. But I don't think that is going to help me.

A couple of responses: Teejayevans. Yes, 337s are supposed to filed with the FAA. As stated in my original post "No 337 in the FAA list of 337s." I have the full list of 337s from the FAA (now you can get them as a download PDF through an AOPA vender) and there is no 337 for the prop. Doesn't mean it wasn't filed with the FAA. Could have been lost by the FAA and not recorded. Seems unlikely though. Cody Stallings - all good points. Yes, the prop was just rebuilt by the prior owner as part of the last annual in May 2014 to meet an AD. It has dye oil conversion. This was one issue that gave me confidence in the plane, low hours on the engine rebuild and a recently rebuilt prop. It was just the wrong prop. Carusoam - southeast Pennsylvania outside Philly. Plane is based at New Garden airport - N57. Pat

In the middle of the first annual on my 1963 M20C and I was informed the prop is not legal. This was not discovered during pre-buy inspection. I have a Lycoming O-360-A1D engine with a McCauley 2D36C14 prop. Only the McCauley 2D34C53-A is approved in the type certification - http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/cd54a24fc81bae1c86257df20054b12c/$FILE/2A3_Rev_56.pdf. There is an unsigned, undated log entry from 1971 indicating the prop was switched out after a gear collapse and the new model installed with a 337 in the logs. No 337 to be found. No 337 in the FAA list of 337s. Prior owner has no other paperwork. (One might say the prior owner sold an un-airworthy aircraft, not permitted by the sales agreement, but may be tough to prove the 337 was not in the transferred paperwork). A&P is trying to see if we can find a DAR (Designated Airworthiness Representative) to possibly review and certify to try to get the FAA field approval of the current prop. It has been on the aircraft for 35 years without incident and is approved for the M20B with the same engine. However I understand field approvals are nearly impossible these days, especially with the Philly FSDO. Does anyone have a similar Mooney with this engine and prop? Do you have any approvals (337, or other) for it that you would be willing to share? Trying to establish an approval record. Does anyone know a DAR who may be helpful. Looks like my alternative is to purchase and install Hartzell’s 2 bladed Scimitar TOPPROP STC kit. Any other recommendations? Overhauled props do not seem to be readily available and advantages of having a new prop over an OH prop are significant although I'm open to an OH prop. An expected variety of other issues found, many expected, but the prop is the real kicker. Thanks, Pat

Thanks for all the responses. Chris (Marauder) You are the man. The link on EBay is exactly my control unit, a couple numbers higher on the serial number. I ordered it. Hopefully it works. I believe this is a PC different unit than the Brittains. There is no switch on the yoke for the PC. When I took my unit apart, the on/off switch was removed and the wires twisted together to permanently turn it on. What great engineering Maybe I can find a switch in case I need a back up unit. Thanks, Pat

That's my understanding. ARC was purchased by Cessna (maybe late 1950s) and Cessna put these into their planes.

Hank, Sent PM with email. Documentation would be helpful. I have none and my Goggle search turned up nothing. The breaker turns off the PC wing leveler control unit, not the vacuum. Clearly the control unit had an on/off switch, at least it appears to have had one, since there are on/off indicators on the unit. Is this unit made/serviced by Brittain, not Aircraft Radio Corporation? Thanks, Pat

My 1963 M20C PC wing leveler control unit is missing parts, including the on/off switch and the knob for the trim adjustment. When I test flew the plane the system appeared to work (had to turn off and on with the breaker). Given the missing parts, I've unplugged the control unit which disables the system, but would like to able to use it. Any suggestions for finding parts or a replacement control unit would be appreciated. Pictures attached. It appears to be original equipment. Control unit reads Mooney Autopilot on the front panel. It is made by Aircraft Radio Corporation (Boonton, NJ), called a Controller-Amplifier Type C-593B-2 (14 volt), serial #101. Thanks, Pat

I'm going through the same process for my M20C. See post under vintage Mooneys. The spinner may be able to be welded. K & K Precision Welding in Wisconsin was recommended to me by Dan at LASAR. Comes back with a yellow tag. Also, Aircraft Spruce advertises spinner welding. Both places may be able to connect you with a new or used spinner. Good luck, Pat http://www.precision-welding.com http://www.aircraftspruce.com/catalog/appages/wspinnerrepair.php?clickkey=89605

Daver, thanks for looking, that is not the spinner. I'm attaching a couple pictures of my current spinner. It measures 13 inches in diameter and 13 inches tall, with 10 screw holes around the base, 5 on each side. There is a brace on the inside of the prop openings, where you see the rivets. When I took the spinner off, I discovered the brace is cracked near the crack in the spinner. So I'll have to see if it can still be welded. I have a lead for a replacement from a MooneySpace PM. Pat

Thanks for the responses. The spinner has approx 1 1/2 inch crack that has been stop drilled 3 times before I purchased the Mooney last fall and has cracking beyond the last stop drill. I'm not willing to keep stop-drilling. New prop with annual last May prior to sale. Not sure why the owner didn't replace the spinner at that time. I have not been able to detect continued cracking but several knowledgeable folks at my airport, including my A&P expressed concern, as in it is not likely to pass annual and a spinner coming apart in flight is no fun. I spoke with Dan at LASAR, new spinner is available but not used. He recommended K & K Specialty Welding in Wisconsin, an FAA certified shop who will repair and yellow tag for about $200, so I'm going to try repair before replacement. Pat

I'm a new Mooney owner, a 1963 M20C . Thrilled to have it. Love to fly it. A fair amount of "deferred maintenance" needs to be done. I need a spinner. Have a Lycoming O-360-A1D Engine and a McCauley Propeller Model # 2D36C14. Thanks, Pat Grusenmeyer