Service difficulty report · Floorbeam · Boeing 73771B

Difficulty date
November 9, 2023
Submitted
December 12, 2023
Operation
Air carrier
Aircraft
N7849A
Make and model
Boeing 73771B
Aircraft serial
29367
Aircraft time
50,414 hours, 32,679 cycles
Part
Floorbeam
Part number
UNKNOWN
Condition
Corroded
Location
Zn 100 Fus Lower
Stage of operation
IN
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

CORROSION FLOOR STRUCTURE FLOOR BEAM LOCATED BS 986.5 LBL 43 AND WL 208.1 AT AFT GALLEY AREA 2023-694124<[01] TOOL USED UT EQUIPMENT P/N: 45MG; S/N: 130061901; CAL DUE DATE: 09-JUN-24;[02] TOOL USED ET EQUIPMENT: P/N: NORTEC 600D; S/N: 210138203; CAL DUE DATE: 09-JUN-24;[03] PERFORMED REPAIR LOCATED ON FLOOR BEAM LOCATED BS 986.5 BETWEEN LBL35 TO LBL 47 AND WL 208.1 AT AFT GALLEY AREA IAW B737-700 SRM 53-70-51-2R-6 REPAIR 6 PARAGRAPH 4; ALTERNATIVE 4 FIGURE 205 SHEET 1 TO SHEET 3 SEE INDIVIDUAL SIGN OFF BELOW.;[04] PERFORMED REPAIR LOCATED ON FLOOR BEAM LOCATED BS 986.5 BETWEEN LBL35 TO LBL 47 AND WL 208.1 AT AFT GALLEY AREA IAW B737-700 SRM 53-70-51-2R-6 REPAIR 6 PARAGRAPH 4; ALTERNATIVE 4 FIGURE 205 SHEET 1 TO SHEET 3 SEE INDIVIDUAL SIGN OFF BELOW.<BR>AS RII

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