Ed
September 23rd 09, 04:45 AM
Over the last year or so I've noticed a gradual increase in engine-
related radio and intercom static in my Grob 103 SL. I've checked the
grounding of the ignition system and I am using R-type spark plugs.
The interesting feature of this static is that I can make it go away
completely if I tug a bit on the airbrake handle (not enough to
release the brakes, just a gentle pressure). Releasing the pressure
causes the static to reappear.
I'm wondering if this pressure exerts force on a bulkhead or metal
fitting that is somehow connected to a ground that has become
intermittent and makes better contact with the pressure. Any avionics
techs out there with advice on how to troubleshoot this problem?
related radio and intercom static in my Grob 103 SL. I've checked the
grounding of the ignition system and I am using R-type spark plugs.
The interesting feature of this static is that I can make it go away
completely if I tug a bit on the airbrake handle (not enough to
release the brakes, just a gentle pressure). Releasing the pressure
causes the static to reappear.
I'm wondering if this pressure exerts force on a bulkhead or metal
fitting that is somehow connected to a ground that has become
intermittent and makes better contact with the pressure. Any avionics
techs out there with advice on how to troubleshoot this problem?