Service difficulty report · Doubler · Doug DC873F

Difficulty date
August 17, 2006
Submitted
September 6, 2006
Operation
Air carrier
Aircraft
N809DH
Make and model
Doug DC873F
Aircraft serial
46047
Aircraft time
93,215 hours, 30,401 cycles
Part
Doubler
Condition
Cracked
Location
Rt Wing
Part time
93,215 hours, 30,401 cycles
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

RT WING TOP PANEL NR 3 MAIN TANK ACCESS DOOR 505E, CRACK ON PREVIOUSLY REPAIRED DOUBLER CONTINUES 0.375" (STA XRS 107.000 - 139.000) MAJOR REPAIR. PERFORMED MAJOR REPAIR IAW FAA FORM 8110-3 DATED 07-16-06, EO NR AST060707 DATED 07-15-06. REMOVED EXISTING INTERNAL DOUBLER IAW SRM 51-1-20D. CUT OUT DAMAGED SECTION IAW EO NR ASTAR060707. PERFORMED NDT INSP IAW NDT SPM PART 06-10-01-001. FABRICATED INTERNAL REPAIR DOUBLER (AL7075T6 0.063") AND FILLER (AL PLATE 7075T651 0.340") IAW EO3 AST060707. HEAT TREATED FILLER FROM 7075T651 TO 7075T6 IAW SRM 51-1-1 PG 1,13,17. CLEANED AND APPLIED POLYURETHANE TOP YELLOW COATING IAW SRM 51-1-12 PG 7-25. APPLIED SEALANT TO FAYING SURFACES IAW SRM 51-1-11. INSTALLED REPA

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