[Oz-mooney] Fw: [Mapalist] potential service bulletin issue

Mon Dec 3 21:18:17 CST 2007

Gary,

Yes, it looks to be a rather serious issue.

Victor
  ----- Original Message ----- 
  From: Gary McKernan 
  To: 'Australian Mooney Pilots Assocation List' 
  Sent: Tuesday, December 04, 2007 1:22 PM
  Subject: RE: [Oz-mooney] Fw: [Mapalist] potential service bulletin issue

  Victor,

  Most likely would affect the M20R, as the M20S is same engine de-rated and different propeller.  Sounds like a SB might be in order on this one.

  Gary McKernan

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  From: oz-mooney-bounces at mooney.org.au [mailto:oz-mooney-bounces at mooney.org.au] On Behalf Of Victor
  Sent: Tuesday, 4 December 2007 11:08 AM
  To: Australian Mooney Pilots Association
  Subject: [Oz-mooney] Fw: [Mapalist] potential service bulletin issue

  Information to all of our M20R brethren.

  Although the below story involves a M20S, I imagine the R has a similar system.  Apologies if this is not the case, otherwise it can possibly prevent a bad hair day.

  Regards,

  Victor Rimkus
  1980 M20J VH-KZJ
  Camden, Australia

  ----- Original Message ----- 

  From: Garygott at aol.com 

  To: mapalist at mooneypilots.com 

  Sent: Monday, December 03, 2007 1:48 AM

  Subject: [Mapalist] potential service bulletin issue

  Dear Mooney pilots: On a recent trip from NY to Naples FL with my wife and 4 year old son for Thanksgiving upon our first approach into Naples municipal on final with throttle fully retarded, speed brakes out, and full flaps our 1999 Mooney eagle with 650hours TT was still indicating 90kts and 1400Rpm. Once over the threashold the speed was was holding at 90kts and I again pulled and turned the throttle control back fully but the enging was still generating 1400 to 1500 rpm and 90kts. I announced a missed approach to the Tower and indicated that we may have a problem. I climed to 2000ft and started to attempt to adjust the trottle back an forth when i realized that If I were to lose throttle control completely I better be in the pattern on final. I contacted the tower and informed them we needed to land. At this point, not knowing the extent of the problem, I was also concerned that a second go around might not be possible. On short final I shut down the engine, however, we were still carrying 90kts. After floating down about half of the 5000 ft runway and still carrying a little too much speed  I decided it was time to get the plane on the runway and keep it there. I set it down as gently as I could inorder to avoid a bounce and then began applying heavy breaks. With less than 1000 ft of runway left, the right tire blew and the plane began to ground loup. I applied left brake and managed to keep the plane on the runway. We came to a stop with 100ft of runway to spare. Naples air center came out jacked up the plane on the runway and changed the blown tire. After towing the plane back to their repair facility they opened the cowl and immediately discovered the problem. The Throttle cable had complely worn through the Throttle cable retention block and was just flloating freely when any throttle adjustment was made. After uncessfully attempting to locate a replacement rentention block they fabricated an exact replacement in their machine shop and we were back in the air after a nice thanksgiving. I kept the original alluminum retention block and can't believe how it was completly worn out with only 650hrs. They also changed the throttle control end. After flying to the bahamas for the rest of our vacation we decided to leave the plane at Premier Aircraft in Ft Lauderdale to have them do this years annual due at the end of Nov.

  In answer to a later question re the actual cause from another list member:

  No the cable wore straight through the clamp. The interior circumference of the clamp was worn evenly and the cable wore through the secondary smaller notch in the clamp in which the cable rides and rests. The clamp not only clamps and holds the cable but it also retains it should the clamp wear and fail to grip the metal shield on the cable itself. In my case the cable wore completly straight through the retention block. 

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