dfurst Posted July 28, 2022 Author Report Share Posted July 28, 2022 So we found the problem. Don't know if M20R was the first model but there is an amp installed on the cabin side of the firewall, just to the right of the pilot's right foot. This amp manages all alerts from the gear system and routes it in to the intercom. Just by dumb luck when they installed the coil pack for the new EIS they installed on the left side of the firewall on the engine side and this happened to be almost exactly lined up with the amp on the inside. While this made for a very clean install in the engine compartment, they had no way of knowing how close they were to this amp inside the cabin. We thought about moving the amp but after much discussion decided that was not a good idea. Moving the coil pack was the right answer. So, now we know that newer Mooney's have an Amp under the panel that drives these alerts to the intercom. 2 Quote Link to comment Share on other sites More sharing options...
carusoam Posted July 29, 2022 Report Share Posted July 29, 2022 14 hours ago, dfurst said: So we found the problem. Don't know if M20R was the first model but there is an amp installed on the cabin side of the firewall, just to the right of the pilot's right foot. This amp manages all alerts from the gear system and routes it in to the intercom. Just by dumb luck when they installed the coil pack for the new EIS they installed on the left side of the firewall on the engine side and this happened to be almost exactly lined up with the amp on the inside. While this made for a very clean install in the engine compartment, they had no way of knowing how close they were to this amp inside the cabin. We thought about moving the amp but after much discussion decided that was not a good idea. Moving the coil pack was the right answer. So, now we know that newer Mooney's have an Amp under the panel that drives these alerts to the intercom. Expect that all Mooneys of the 90s shared most of the same electrical systems of the day… lots of commonality in M20R, J, K, and M…. Soooo…. If you have nice tones for stall warning and gear up…. Look for the amp. Great follow-up dfurst! Best regards, -a- Quote Link to comment Share on other sites More sharing options...
dfurst Posted June 7, 2023 Author Report Share Posted June 7, 2023 Finally fixed during annual. They rerouted the landing gear warning switch wires away from the ignition leads in the engine compartment. Simple solution. 1 2 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.