BOESHIELD (Boeing product) or CRC MAY prevent this, Virg
On 3/28/2011 12:35 AM, Martin Pearce wrote:
> Just a heads up really for anyone on the list flying an older KR2 ... I have
> a recently imported 30 yr old aircraft and had a condition report done on
> Friday. This is where a qualified aircraft engineer comes to have a look as
> part of the re registration process .....
>
>
>
> He found three instances of exfoliation corrosion, two on the flap
> attachments at the base of the fuselage (one on each side) and one on the
> elevator trim horn.
>
>
>
> Although I hadn't seen the flap attachment brackets, when It was pointed out
> to me, it was obvious, with the aluminium crush plate peeled open in layers,
> the layers pinched together by the bolts ..........
>
>
>
> The scary one was the trim cable attachment. This just looked like a
> slightly rusty clevis on the cable. The corrosion on the horn was mostly
> hidden. Once I had dismantled the connection, I gently scraped the control
> horn with a screw driver, and the aluminium just peeled back in layers under
> where the clevis had been sitting and, in the line of the cable, the
> material just crumbled away leaving the pin (if it had still been in place)
> free to pull out! There are a couple of pictures of the elevator horn here
> ...
