Service difficulty report · Repair Doubler · Boeing 747121

Difficulty date
June 4, 1996
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N682UP
Make and model
Boeing 747121
Aircraft serial
20349
Part
Repair Doubler
Condition
Incorrect Repair
Location
Nr 3 Pylon
Stage of operation
IN
Nature of condition
W
Precautionary procedure
K

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

What was found

INSPECTION TYPE: C. PYLON NR 3, FOUND REPAIR DOUBLER ON NAC STA 180 LT NOT INSTALLED IAW SRM (EDGE MARGINS ON MID SPAR TOO SMALL). FOUND DURING REMOVAL OF DOUBLER THAT DOUBLER WAS MADE FROM SOFT STEEL MAT: REWORK MID SPAR STIFFENER AND REPLACED GUSSET APPROVED BY TLX UPS-AMS 96-0137RE AND KLM DFX 96 117, ISSUE NR 2. INSTALLED NEW DOUBLER IAW S.B. 747 54-2034R4, FIGURES 3 AND 6.