Service difficulty report · Stiffener · Boeing 747123F

Difficulty date
May 13, 2005
Submitted
June 6, 2005
Operation
Air carrier
Aircraft
N677UP
Make and model
Boeing 747123F
Aircraft serial
20391
Aircraft time
94,338 hours, 23,406 cycles
Part
Stiffener
Part number
65B100983
Condition
Cracked
Location
Keelbeam
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

FX AIR CONDITIONING BAY LT KEELBEAM BOX EXTERNAL SURFACE VERTICAL WEB ATTACH STIFFENER FOUND CRACKED AT STA 983 LBL 9 WL 95 INCH (CRACK LENGTH .500) FX AIR CONDITIONING BAY LT KEELBEAM BOX EXTERNAL SURFACE VERTICAL WEB ATTACH STIFFENER REPLACED AS PER SRM 51-10-01 PG 9 AND INSTALLED AS PER SRM 51-30-02.