Service difficulty report · Floorbeam · Boeing 737277

Difficulty date
August 2, 2002
Submitted
August 26, 2002
Operation
Air carrier
Aircraft
N183AW
Make and model
Boeing 737277
Aircraft serial
22650
Aircraft time
61,378 hours, 49,988 cycles
Part
Floorbeam
Part number
6545409602
Condition
Cracked
Location
Fuselage
Stage of operation
IN
How discovered
E
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

MCN - MAJOR REPAIR - DURING C-18 CHECK A 2.7 INCH CRACK WAS FOUND ON THE LOWER SIDE OF FLOORBEAM UPPER CHORD AT BS 663, RBL 24, WL 202; VERIFIED BY HFEC INSPECTION. MAINTENANCE REMOVED CRACKED SECTION OF UPPER CHORD BS 663, RBL 24, WL 202. FABRICATED 2 REPAIR ANGLES, A STRAP, AND NEW SECTION OF CHORD. HFEC OF CHORD AND VERTICAL WEB IDENTIFIED 4 CRACKS PROTRUDING FROM UPPER AND LOWER HOLES ON VERTICAL WEB AT RBL 19 & 20.5 UPPER ROW, AND RBL 20.5 & 28 LOWER ROW. OVERSIZED CRACKED HOLES ON VERTICAL WEB TO .200 AND RE-ACCOMPLISHED HFEC INSPECTION TO VERIFY CRACKS CONTAINED. INSTALLED REPAIR PARTS FOR UPPER CHORD REPAIR IAW AWA ER 15-5715-02229-ES2.