Hi Nils
You will doubtless get lots of other replies, but my findings were:
The trailing edge of the airbrake (spoiler) catches on the back of the
aperture in the wing. The brake moves very slightly back as it starts to
open and under certain conditions it can catch and jam. This only happened
on my Dimona after 20 years when we had moved to Australia. The cure is very
simple - clear the gap between the back of the airbrake and the wing by
either filing (or rubbing with sandpaper) a very small amount from the back
of the airbrake and/or scraping any excess paint or dirt from the recess in
the wing where the brake fits when it is retracted.
I was very surprised as my brakes would simply not open, but after a minute
or two of sanding with emery paper the problem was completely cured!
Cheers
Michael
-----Original Message-----
From: Nils Beck
Sent: Friday, August 31, 2012 10:04 PM
To: [email protected]
Subject: [DOG mailing list] Airbrake stuck
Hi everybody,
I'm a new member to the mailing list. My flying club is Akaflieg Hannover
(www.akaflieg-hannover.de). A year ago we purchased a H36 Dimona with
Limbach 2000.
Now the following occurs from time to time: The airbrakes won't deploy and
seem locked in the retracted postion, no matter how hard you pull the lever.
Usually, they finally do come after a few tries. Strangely it never happens
on the ground, so it's not something you can detect during preflight.
Anyone experienced this before? Any cures?
Cheers
Nils
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