Stall Horn OH?

WannFly

WannFly

Final Approach
Joined
Nov 28, 2016
Messages
6,553
Location
KLZU
Display Name
Display name:
Priyo
anyone knows where to get a stall horn overhauled? the actual mechanical device on the leading edge. mine is acting up and works intermittently (at least that what i have found in preflight and stayed on the ground)
 
WannFly said:
anyone knows where to get a stall horn overhauled? the actual mechanical device on the leading edge. mine is acting up and works intermittently (at least that what i have found in preflight and stayed on the ground)
Click to expand...

Good luck.
 
I Used to work for an Aero Club and would see that often Alcohol spray bottle they get dirt and bugs. Try to save money.
 
Is a stall horn considered something a owner can fix/replace themselves as long as its an original / STC / PMA?

Seems simple enough that an owner could return it to service themselves?
 
Sinistar said:
Is a stall horn considered something a owner can fix/replace themselves as long as its an original / STC / PMA?

Seems simple enough that an owner could return it to service themselves?
Click to expand...

I am getting a PMA one, don’t think it’s in the list of stuff pilot/owner can do. But I could be wrong, it’s the usual thing.
 
Doug Reid said:
It is just a momentary switch. Check connections...might need deoxit.
Click to expand...
The microswitch gets dirt in it. The assembly needs to come out and get a soaking in some contact cleaner or brake cleaner, and blown out. The switch isn't sealed, which is why dirt gets in and why we can clean it.
 
My IA cleaned mine and it worked for a while, but ultimately we had to get a new one. I think it was close to $1000.
 
Mine only works if a passenger is aboard and yelps real loud when she breaks...
 
MajorTurbulence said:
My IA cleaned mine and it worked for a while, but ultimately we had to get a new one. I think it was close to $1000.
Click to expand...

680 or so for the part, PMA. The factory one I think is around 2600 or some astronomical number like that
 
Huckster79 said:
Mine only works if a passenger is aboard and yelps real loud when she breaks...
Click to expand...

Another warning is the CFI death scream that goes off when a CFI fears imminent death. I heard that one time when the student (I was in the back seat playing human ballast) tried to demonstrate a departure stall on takeoff.

The Navion has no stall warning horn or buzzer. It has a pronounced (due to strips on the wing I think) pre-stall buffet that gives plenty of warning before the rather benign break.
 
I had a similar problem with my horn. We think the micro switch that the vane attaches to was sticking. My AI sprayed copious amounts of Tun-O-Wash, by Chemtool, into it while flipping the vane up and down.

That was about 2 years ago, and it’s worked perfectly since.
 
update: I got the lift detector replaced. 680 in parts and shipping, 1 hr labor from a&P/IA to come to my hangar and do it. takes 20 mins and about 6 screws to do it. no idea why A/C owner operator is not allowed to do it... it is what it is.. sigh
 
WannFly said:
update: I got the lift detector replaced. 680 in parts and shipping, 1 hr labor from a&P/IA to come to my hangar and do it. takes 20 mins and about 6 screws to do it. no idea why A/C owner operator is not allowed to do it... it is what it is.. sigh
Click to expand...

You might want to go out and check the actual operation in flight. It doesn't take much to throw the actuation point. The detailed procedure should be in the maintenance manual. Good excuse to go out and practice slow flight. :)
 
You missed your chance to justify an AoA? :)
 
WannFly said:
update: I got the lift detector replaced. 680 in parts and shipping, 1 hr labor from a&P/IA to come to my hangar and do it. takes 20 mins and about 6 screws to do it. no idea why A/C owner operator is not allowed to do it... it is what it is.. sigh
Click to expand...
The next time something simple like this happens maybe you should ask your mechanic if you can do the following (I bet I get beat up for this):

1.) Install it yourself and insert a log entry (you are 100% transparent and not throwing your mech under the bus in any way)
2.) Have him authorize it the next time he sees the plane.
3.) If your logs get reviewed by the FSDO you are 100% responsible.
4.) The day the IA signs it off the logs are not 100% valid again and you are off the hook.

...okay how many rules did we just break :) It just seems that a stall horn is a simple assembly which the owner could replace. So doing the above seems like a viable way it you weren't sure. Plus this part seems like a light bulb and look how many others have repaired it themselves.
 
Sinistar said:
The next time something simple like this happens maybe you should ask your mechanic if you can do the following (I bet I get beat up for this):

1.) Install it yourself and insert a log entry (you are 100% transparent and not throwing your mech under the bus in any way)
2.) Have him authorize it the next time he sees the plane.
3.) If your logs get reviewed by the FSDO you are 100% responsible.
4.) The day the IA signs it off the logs are not 100% valid again and you are off the hook.

...okay how many rules did we just break :) It just seems that a stall horn is a simple assembly which the owner could replace. So doing the above seems like a viable way it you weren't sure. Plus this part seems like a light bulb and look how many others have repaired it themselves.
Click to expand...

While I agree with you, it sounds like a slippery slope with FSDO... dunno
 
You must log in or register to reply here.
Back
Top