AD NUMBER: 2008-08-15
SUBJECT: Airworthiness Directive 2008-08-15
SUMMARY: We are adopting a new airworthiness directive
(AD) for the products listed above. This AD results from mandatory
continuing airworthiness information (MCAI) issued by an aviation
authority of another country to identify and correct an unsafe
condition on an aviation product. The MCAI describes the unsafe
condition as: The manufacturer reported findings of missing primer
on the internal of the elevator and rudder of aircraft S/N 8200.
The aircraft S/N 8200 was with RUAG for maintenance purposes.
Investigation performed by RUAG showed that the paint removal
procedure for the rudder and elevator was changed from a paint
stripping with brush and scraper to a procedure where the parts
were submerged in a tank filled with hot liquid stripper. The
stripper is called TURCO 5669 from Henkel Surface Technologies. The
stripping process is described in the Technical Process Bulletin
No. 238799 dated 09/01/1999. This paint stripping process change
was not communicated to and not approved by the TC-Holder. We are
issuing this AD to require actions to correct the unsafe condition
on these products.