Service difficulty report · Floorbeam · Boeing 7378H4

Difficulty date
December 6, 2023
Submitted
January 16, 2024
Operation
Air carrier
Aircraft
N8312C
Make and model
Boeing 7378H4
Aircraft serial
38809
Aircraft time
37,321 hours, 17,423 cycles
Part
Floorbeam
Part number
UNKNOWN
Condition
Corroded
Location
Zn 200 Fus Top
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 BEAM UPPER FLANGE BS 986.5 AND LBL 43 WL 208.1 AT AFT GALLEY AREA 2023-751590<[01] TOOL USED ULTRASONIC EQUIPMENT P/N 45MG; S/N 130066401; DUE DATE 05/OCT/24;[02] TOOL USED: EDDY CURRENT FLAW DETECTOR; P/N: NORTEC 600 D; S/N: 60009161631; DUE DATE: 31-JAN-24.;[03] TOOL USED: EDDY CURRENT FLAW DETECTOR; P/N: NORTEC 600 D; S/N: 60009161631; DUE DATE: 31-JAN-24.;[04] PERFORMED PERMANENT REPAIR LOCATED ON FLOOR BEAM STRUCTURE UPPER FLANGE BS 986.5 BTW LBL40 AND LBL47 WL208.1 IAW B737-800 SRM SRM 53-70-51-2R-6 REPAIR 6 SRM 51-40-02. SEE INDIVIDUAL SIGN OFF BELOW.;[05] PERFORMED PERMANENT REPAIR LOCATED ON FLOOR BEAM STRUCTURE UPPER FLANGE BS 986.5 BTW LBL40 AND LBL47 WL208.1 IAW B737-800 SRM SRM 53-70-51-2R-6 REPAIR 6 SRM 51-40-02. SEE INDIVIDUAL SIGN OFF BELOW.<BR>CERTIFIED AS RII

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