unicom Posted December 10, 2018 Report Share Posted December 10, 2018 Hi everyone, Bad surprise today as the flaps of my 1980 M20J have remained jammed in the up position. Always good to practice flaps up landing !!! The event happened in flight. No pop up of the breaker. I reset it a couple of times without success. There is no noise when I manipulate the toggle switch. So I came to the conclusion that there is either: - a toggle switch issue - a flap electric motor malfunction - a wire disconnected somewhere - a stuck relay Any other idea what could be the cause of the problem ? how would you address the trouble shooting ? Thanks for your help. Quote Link to comment Share on other sites More sharing options...
orionflt Posted December 10, 2018 Report Share Posted December 10, 2018 definitely sounds like an open on the circuit, and your looking in the correct places. I would start with reading out the circuit at the motor and work my way back towards the switch. Brian Quote Link to comment Share on other sites More sharing options...
carusoam Posted December 10, 2018 Report Share Posted December 10, 2018 Oops, incorrect detail removed... Best regards, -a- Quote Link to comment Share on other sites More sharing options...
Yetti Posted December 13, 2018 Report Share Posted December 13, 2018 It was windy so I did a no flap landing today. 90% of my landings are 1/2 flaps. The flaps only add about 3 knots to the stall speed. Start with the limit switches int the belly. Last panel by the flap torque tube. Try wiggling them and see if they start working. That usually means limit switch. Quote Link to comment Share on other sites More sharing options...
unicom Posted December 13, 2018 Author Report Share Posted December 13, 2018 Well done guys..Problem was a dusty limit switch. After a bit of cleaning, everything back to fully functional flaps. Love MOONEYSPACE :-) !!! 2 Quote Link to comment Share on other sites More sharing options...
Bartman Posted December 13, 2018 Report Share Posted December 13, 2018 I had a similar issue last week and since it has been discussed here before I knew what it was right away. We had done a touch and go landing and the flaps would not retract from the fully extended position. No biggie we were climbing well so we the pattern anyway and I was already in landing configuration. After troubleshooting I made sure the switch was not in the up position so they would not retract at an unexpected time and landed normally. Of course the flaps retracted normally when I hit the switch after exiting the runway. Annual coming up next month so that's on the list for things to address. Quote Link to comment Share on other sites More sharing options...
Yetti Posted December 13, 2018 Report Share Posted December 13, 2018 Wally world and a $2.00 can of contact cleaner Quote Link to comment Share on other sites More sharing options...
mooneyflyfast Posted December 17, 2018 Report Share Posted December 17, 2018 Happened to me recently. The problem was a bad pin in a connector. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.