Service difficulty report · Floorbeam · Boeing 74748EF

Difficulty date
July 28, 2011
Submitted
July 29, 2011
Operation
Air carrier
Aircraft
N419MC
Make and model
Boeing 74748EF
Aircraft serial
28367
Aircraft time
67,951 hours, 11,520 cycles
Part
Floorbeam
Part number
65B3861425
Condition
Dented
Location
Bs 560
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

INSPECTION FOUND VISUALLY ON THE BS 560 FWD CARGO COMPARTMENT FLOORBEAM UPPER TEE CHORD FWD FLANGE HAD A DENT AT RBL 18 AND 65B06871-9 INNER CHORD HAD A DENT AT RBL 49 AS NOTED IN FIG 1. NO APPLICABLE SRM REPAIR FOR THIS AREA. FURTHER STUDY OF THE REPAIR AREA FOUND THE AFT CAP SPLICE PN 65B01721-97 AT RBL 30 WAS EXTENDED TO RBL 20 WITH ADDITIONAL FILLER IN FRONT AS SHOWN IN FIGURE 1. THIS WAS DOCUMENTED ON FWP 501664 & AMP; FWP 501672.(THE DENTS WERE TRIMMED OUT. REPAIR ANGLES AND FILLERS WERE FABRICATED WITH PARTS BEING TREATED AND PRIMED. REPAIR PARTS AND FASTENERS WERE WET INSTALLED WITH SEALANT. ALL ACCOMPLISHED IAW MFG PROVIDED AND APPROVED INSTRUCTIONS AS NOTED IN SR 1-1936009554 AND DOCUMENTED IN RS R53-25-37187 REV A.

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