Safety Recommendation
The Australian Transport Safety Bureau recommends that the Civil
Aviation Safety Authority review the inspection procedures with
regard to the continuing airworthiness of wooden wings and
propellers that were manufactured with the use of Casein
adhesive.
The Civil Aviation Safety Authority advised that it will review
the existing regulations and advisory material related to the
continuing airworthiness of old wooden aircraft, including the use
of casein adhesives. The Authority will advise the Bureau of the
outcomes of the review.
I refer to your email of 9 December 2004 seeking an update on
recommendation R20030027, which was issued to the Civil Aviation
Safety Authority (CASA) in February 2003.
In an earlier response, CASA advised the Bureau that it would
review the existing regulations and advisory material related to
the continuing airworthiness of old wooden aircraft, including the
use of casein adhesives.
Due to resourcing constraints, CASA has been unable to initiate
a review of the existing regulations and advisory material, which
essentially relates to older Tiger Moths and similar aircraft types
that are generally used for either private flying or adventure type
operations.
CASA's Aviation Safety Standards Division anticipates that a
review on this issue will be completed in the first half of
2005.
The Civil Aviation Safety Authority (CASA) issued an
Airworthiness Bulletin 02-011 dealing with subject of Timber,
Plywood and Adhesive for Aircraft Use on 26 October 2005.
