Re: 10th KFC225 failure in 6 years

Have the shop hook up a voltmeter to the tach feedback line and check
it for tollerance and stability.

On Mon, 28 Apr 2008 20:09:31 +0100, Peter <nospam@[EMAIL PROTECTED]
>
wrote:

>I've just had another one. Details at the bottom of this URL
>
>http://www.peter2000.co.uk/aviation/kfc225/kfc225-1.html
>
>(go to the "Update 25th April 2008")
>
>Can anyone suggest what it might be?
>
>Superficially it is a pitch trim failure but the pitch trim works
>manually so the motor etc is OK. The pitch servo contains a strain
>gauge which feeds a "I need trimming" signal to the KC225 computer
>which then drives the pitch trim servo accordingly, and the fault
>could be in this part of the system (a duff strain gauge).
>
>I can get some refurb KC225 computers but these need a "certification
>file" (basically, the TB20 aircraft parameters) and this seems to be
>hard to get. If anybody has got this file I would appreciate it :) My
>email is peter at peter2000 dot co dot uk. The filename is
>18950000.CER
>
>Honeywell have stopped making this product.
>x----------x