Gear Warning Horn

[rakesb]

Dear Mooney Teammates:

My gear warning horn doesn't sound when I retard the throttle to idle in flight in my 1966 M20C S/N: 3261. Is there anything make, model, or aircraft specific that would help an A&P/IA who is unfamiliar with Mooney aircraft diagnose and fix the problem?

Thank you,

Bobby

N6094Q

(573) 337-3447

[tony]

There's a micro switch on the throttle cable just behind the instrument panel.

[larryb]

Sonalert are frequently the problem. Search for a recent similar thread.

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[bdjohn4]

Check the actual ground wire on the overhead horn/speaker. For some reason the ground wire goes (I think) all the way back down the roll cage to the panel and grounds somewhere there, but I suppose you could just ground the wire to the rollcage right next to the overhead horn/speaker.

[mooneyflyer]

Often the switch has slid along the throttle linkage. Set your throttle to your approach setting, then look and see If the switch is engaged. If not, make it so.

[mike_elliott]

Check the actual ground wire on the overhead horn/speaker. For some reason the ground wire goes (I think) all the way back down the roll cage to the panel and grounds somewhere there, but I suppose you could just ground the wire to the rollcage right next to the overhead horn/speaker.

 

That was exactly the problem on my F in 2000. IA grounded it to cage right at the sonealert. Prob. fixed.

[N201MKTurbo]

When I had my F when the sonealerts stopped working, if I whacked them they would start working and work for a few more months. Not a very good root cause analysis, but after I whacked them I couldn't get them to fail.

[Piloto]

Radio Shack sell the Sonalert buzzers for $4.95. This is where I got mine. 

 

José

[Lionudakis]

My horn quit working too a while back. I forget which manufacturer it was, but it's the old style horn (62), on the upper left side of the firewall. If I whacked it it would sound, but not restart on its own. I replaced it with a Sonalert, there was a service kit to replace the original at a cost of a few hundred, that consist of a $20 piezo slightly larger than a quarter, and instructions. When I build a new panel I want to surface mount it, and add a warning light of some sort along with it.....It can happen to any of us

[cliffy]

That's why I like my "charlie armstrong" gear. If the handle points up, the gear is down :-)

 

Of course the manual gear has a micro switch in the down and locked socket that can also get out of rig. Either the finger on the switch bends up or the gear handle sleeve doesn't go far enough up into the socket but everyone should be checking the sleeve engagement prior to landing Right?  :-) 

[jwhitaker74]

My horn just quit working in overhead. anyone know for sure where ground goes to. I was just working under pilot side inst access replacing PC gyro and removed the PC turn coordinater power supply. maybe i missed or disturbed the ground. Figures been working off all my sqwaks and just as i finish something else comes up. I have in last two months OH complete INJ system servo spider ,all new landing gear biscuits to include new NLg truss stc rewired my dash backlighting which was inop. fixed PC vacume leaks and OH the pc gyro, and replaced CHT probe .By the way Brittain is awsome to work with and fast. My turn coordinater gyro was original 1969 never overhauled and gimble was still good. 450 ish to re build. works like a champ now