Service difficulty report · Floorbeam · Boeing 7378H4

Difficulty date
November 30, 2021
Submitted
January 11, 2022
Operation
Air carrier
Aircraft
N8621A
Make and model
Boeing 7378H4
Aircraft serial
36917
Aircraft time
27,526 hours, 12,424 cycles
Part
Floorbeam
Condition
Corroded
Location
Fuselage
Stage of operation
UK
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

CABIN FLOOR BEAM HAS CORROSION AT B.S. 947.5; LBL 51'. AREA MARKED. ; / [01] BLENDED CORROSION PER SRM 51-40-02. DAMAGE REMOVAL ON CABIN FLOOR BEAM AT STA. 947.5; LBL 51' IS OUT OF LIMITS PER SRM 53-70-51-1A-1.; [02] VERIFIED BLENDED CORROSION PER SRM 51-40-02. DAMAGE REMOVAL ON CABIN FLOOR BEAM AT STA. 947.5; LBL 51' IS OUT OF LIMITS PER SRM 53-70-51-1A-1; [03] CUT AND REMOVED DAMAGED UPPER CHORD OF FLOOR BEAM AT STA 947.5 FROM RBL 59 TO LBL 59 PER SRM 53-70-51-2R-5; ALTERNATIVE 1.; [04] FABRICATED REPLACEMENT LEFT AND RIGHT UPPER T-CHORD SECTIONS; DE-BURRED REPAIR PARTS; TREATED AND PRIMED REPAIR PARTS; ALL IN ACCORDANCE WITH SRM 53-70-51-2R-5; ALTERNATIVE 1; AND EA 21-153-03565 WIP?S 1-3.;

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