Service difficulty report · Chord · Boeing 747121

Difficulty date
April 22, 1997
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N681UP
Make and model
Boeing 747121
Aircraft serial
19661
Part
Chord
Condition
Cracked
Location
Nr 3 Pylon
Stage of operation
IN
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

INSPECTION TYPE-C, PYLON 3 FOUND DURING SB 747-54-2034 UNDER OLD DOUBLER CRACK 3.5 LONG RUNNING TO MID SPAR CHORD NAC STA 180 AND 3X HOLES DRILLED IN MID SPAR CHORD STA 184 EDGE MARGIN TOO SMALL. TRIMMED SKIN AND DOUBLER. INSTALLED FILLER, REWORKED MID SPAR CHORD ACC KLM DFX 97-087 ISSUE 3, EFN 747-54-0156.