Service difficulty report · Dope Film · Aviat PITTSS2B

Difficulty date
February 17, 2004
Submitted
February 25, 2004
Operation
General aviation
Aircraft
N79D
Make and model
Aviat PITTSS2B
Aircraft serial
5260
Engine
Lyc AEIO540D4A5
Part
Dope Film
Condition
Delaminated
Location
Skin Fabric
Part time
560 hours
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

ALL OF THE DOPE FILM DELAMINATED FROM THE CECONITE 102 FABRIC. AFTER SEVERAL PHONE CALLS, IT WAS DETERMINED THAT IMPROPER APPLICATION METHOD WAS USED. THE RANDOLPH DOPE PROCESS REQUIRES THE USE OF RANDO PROOF PRIMER FOR THE FIRST TWO COATS ON CECONITE FABRIC AND THE FIBERS OF THE FABRIC MUST BE COMPLETELY ENCAPSULATED. AFTER ADDITIONAL CALLS, IT WAS DETERMINED THAT THE FACTORY OMMITED THE RANDO PROOF PRIMER STEP AND FAILED TO ENCAPSULATE THE FABRIC FIBERS RESULTING IN THE DELAMINATION OF THE DOPE FILM. (EA17200405558)