Service difficulty report · Floorbeam · Boeing 73771B

Difficulty date
December 2, 2023
Submitted
December 29, 2023
Operation
Air carrier
Aircraft
N7845A
Make and model
Boeing 73771B
Aircraft serial
29366
Aircraft time
50,501 hours, 32,811 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 ON FLOOR BEAM LOCATED STA 986.5 AND LBL31 TO LBL43; WL208.1 AT AFT GALLEY AREA 2023-748325<[01] EDDY CURRENT EQUIPMENT USED P/N: NORTE 600D; S/N: 210136503 AND DUE DATE: 23-MAY-24.;[02] ULTRASONIC EQUIPMENT USED P/N: 45MG; S/N: 232017609 AND DUE DATE: 22-SEP-24.;[03] TOOL USED: EDDY CURRENT FLAW DETECTOR P/N: NORTEC 600D; S/N: 21013803; DUE DATE: 02-MAY-24;[04] PERFORMED REPAIR ON FLOOR BEAM 986.5; LBL 43 & WL 208.1 AT AFT GALLEY AREA. IAW B737-700 SRM 53-70-51-2R-6 REPAIR 6. ?SEE INDIVIDUAL SIGNOFFS BELOW?.;[05] TOOL USED UT EQUIPMENT P/N: 45MG; S/N: 130061901; CAL DUE DATE: 09/JUN/24;[06] RII COMPLETED JOB

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