Service difficulty report · Floorbeam · Boeing 7377K9

Difficulty date
February 12, 2020
Submitted
March 4, 2020
Operation
Air carrier
Aircraft
N7879A
Make and model
Boeing 7377K9
Aircraft serial
34321
Aircraft time
44,713 hours, 21,719 cycles
Part
Floorbeam
Condition
Corroded
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

***CORROSION*** BS 986 FLOOR BEAM HAS CORROSION AT FASTENER HOLES ON TOP FORWARD FLANGE AT RBL 39.75 AND RBL 43.25. WL 208 CORROSION ON STA 986 FLOOR BEAM AT RBL 39.75 AND RBL 43.25 WL 208 MEASURES L 6.5" X W 1.15" X D .050" FOUND TO BE OUT OF LIMITS IAW SRM 53-70-51-1A-1. REPAIRED STA 986 FLOOR BEAM IAW SRM 53-70-51-2R-4 ALTERNATIVE 2 57901U 28FEB20

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