teamgrumman(at)yahoo.com
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 Posted: Sat Jul 02, 2011 8:12 pm Post subject: Here's a first |
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In 2008, the customer of a 2004 Tiger complained that there was a buzzing noise in his headset when deploying flaps. I took everything apart and found the current path through the micro-switches shared a common ground that went through both micro-switches. I looked at the wiring diagram for a 79 Tiger and it was NOTHING like the new Tiger. So, I rewired the micro-switches to mimic the 79 Tiger wiring diagram. The buzzing went away for a while. Then, it came back only intermittently. A few months ago, the circuit breaker started popping when the flaps were deployed. Could not duplicate on the ground.
Quite naturally I started to question whether it was a good idea or not to change the wiring. I got in there again, 100 degrees in the hangar, more in the cockpit, and took everything apart again. I could not find anything. No shorts, no wires crossed, nothing. I grabbed the flap motor and had my significant other deploy the flaps. I wanted to see if it got hot. What I found was the entire flap motor and bracket moving. Not much, but moving just the same.
I tried tightening the hold down nuts and they just spun. Then I looked underneath.
Gary
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