Service difficulty report · Floorbeam · Boeing 7377H4

Difficulty date
March 8, 2023
Submitted
April 11, 2023
Operation
Air carrier
Aircraft
N280WN
Make and model
Boeing 7377H4
Aircraft serial
32533
Aircraft time
52,163 hours, 31,377 cycles
Part
Floorbeam
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 ON FLOOR BEAM LOCATED FLOOR STRUCTURE BS 294.5 RBL 6 WL 208.1 AT FWD GALLEY AREA 2023-180827<[01] EQUIPMENT P/N 45MG; S/N 130066701; DUE DATE 08-APR-23 WAS USED;[02] TOOL USED: ET EQUIPMENT P/N: NORTEC 500D; S/N: N500X12101V022233; DUE DATE: 30-AUG-23;[03] TOOL USED RADIOMETER P/N: XRP-3000; S/N: 1858843; DUE DATE: 04-MAY-23.;[04] REPAIRED THE UPPER CHORD OF THE FLOOR BEAM AT STA. 294.5 AND BTW RBL 25 AND LBL 21; WL 208.1 AT FWD GALLEY AREA IAW B737-700 SRM 53-10-51-2R-16 REPAIR 16 ALTERNATIVE 1 FIGURE 202. SEE INDIVIDUAL SIGN OFF BELOW.;[05] REPAIRED THE UPPER CHORD OF THE FLOOR BEAM AT STA. 294.5 AND BTW RBL 25 AND LBL 21; WL 208.1 AT FWD GALLEY AREA IAW B737-700 SRM 53-10-51-2R-16 REPAIR 16 ALTERNATIVE 1 FIGURE 202. SEE INDIVIDUAL SIGN OFF BELOW. RII CERTIFIED

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