Jump to content

KFC 150 will not engage


AmigOne

Recommended Posts

A friend from Argentina tells me that the KFC 150 a/p in his 1985 J model will not engage in flight and down there they can't figure out the problem. This condition just showed one day during a flight. The unit is getting power (lights on) but when he tries to engage the a/p the push button will not stay in. Has anybody with this model has experienced something similar and, if so, what was the problem?. Thanks

Link to comment
Share on other sites

I had the same problem with my KFC200 3 years ago. It was the toggle switch (not push button) to engage. The plastic part of the switch broke inside & wouldn't let the contacts meet.

I also recently had to replace a "worn out" electric trim switch on the yoke which would occasionally cause the autopilot to fail to engage. Exercising the trim switch a couple of times would alleviate the problem.

Note: Replacing the electric trim switch turned out to be difficult and expensive. It took my avionics guy about 20 phone calls to locate the right switch & when received, all the wires were different from the original. The switch was about $650 & labor almost that amount due to rewiring and testing to be sure the autopilot worked in all modes as the switch is an integral part of that system...

Link to comment
Share on other sites

  • 2 years later...
On September 2, 2013 at 2:21:21 PM, Jack Burson said:

I had the same problem with my KFC200 3 years ago. It was the toggle switch (not push button) to engage. The plastic part of the switch broke inside & wouldn't let the contacts meet.

 

I also recently had to replace a "worn out" electric trim switch on the yoke which would occasionally cause the autopilot to fail to engage. Exercising the trim switch a couple of times would alleviate the problem.

 

Note: Replacing the electric trim switch turned out to be difficult and expensive. It took my avionics guy about 20 phone calls to locate the right switch & when received, all the wires were different from the original. The switch was about $650 & labor almost that amount due to rewiring and testing to be sure the autopilot worked in all modes as the switch is an integral part of that system...

Hi Jack.

I have a KFC200 and the toggle switch to turn the autopilot ON doesn't engage all the time. It basically won't stay in the ON position. Sounds like you were having the same issue. Where did you end up getting the new switch? Thanks for the info.

Link to comment
Share on other sites

  • 2 months later...

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.