Service difficulty report · Stiffener · Boeing 747200

Difficulty date
May 20, 2003
Submitted
June 6, 2003
Operation
Air carrier
Aircraft
N521UP
Make and model
Boeing 747200
Aircraft serial
21944
Aircraft time
70,081 hours, 16,930 cycles
Part
Stiffener
Part number
65B15069418
Condition
Corroded
Location
Keelbeam
Stage of operation
IN
How discovered
9
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, FX KEELBEAM BOX RT STIFFENER FOUND CORROSION CRACKED AT STA 1460 RBL 6. FX KEEL BEAM BOX AT RBL 6 STA 1460 STIFFENER REPLACED AS PER SRM 51-10-01 PG 8. DUE TO CORROSION CRACK TO STIFFENER OUT OF SRM 53-10-01 FIG LIMITED NEED TO BE CHANGED. DAMAGED AREA .75 X 1.5 X 0.032 INCH MAT'L REMAINED.

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