Service difficulty report · Keelbeam · Boeing 737375

Difficulty date
August 30, 2002
Submitted
October 3, 2002
Operation
Air carrier
Aircraft
N336AW
Make and model
Boeing 737375
Aircraft serial
23707
Aircraft time
51,678 hours, 27,640 cycles
Part
Keelbeam
Part number
65621258
Condition
Cracked
Location
Fuselage
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

DURING C-03 CHECK EXFOLIATION CORROSION WAS FOUND ON THE RT KEEL BEAM AT BS 633. MAINTENANCE REMOVED CORROSION AND FOUND MATERIAL LOSS WITHIN LIMITS BUT ALSO DISCOVERED A 2 INCH CRACK. TRIMMED OUT CRACK AND PERFORMED HFEC INSPECTION TO VERIFY CRACKS NO LONGER EXIST. FABRICATED AN EXTRUSION BEAM AND 2 EACH ANGLES, AND INSTALLED REPAIR PARTS IAW AWA E.R. 03-5369-02272-SS2.