Service difficulty report · Beam · Boeing 7377H4

Difficulty date
March 12, 2023
Submitted
April 17, 2023
Operation
Air carrier
Aircraft
N221WN
Make and model
Boeing 7377H4
Aircraft serial
34259
Aircraft time
58,906 hours, 34,822 cycles
Part
Beam
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 ON FLOOR BEAM 986.5 AT LEVEL STR 17L WL 208.1 LBL 46 AT GALLEY AREA 2023-185347<[01] INITIAL MEASURES OF CORROSION ARE L= 1.167? W=1.020? TOOL USED DIGITAL CALIPER P/N:500-197-30 S/N:A21042066 DUE DATE: 30-JUN-23.;[02] TOOL USED ULTRASONIC EQUIPMENT PN: 45MG; SN: 221861811; DUE DATE: 08 NOV 23;[03] TOOL USED: EDDY CURRENT EQUIPMENT. P/N: NORTEC 600D. S/N: 220272512. DUE DATE: 17-DEC-23.;[04] PERFORMED PERMANENT REPAIR LOCATED ON FLOOR BEAM 986.5 AT LEVEL STR 17L WL 208.1 BTW LBL 40 UP TO LBL 49 AT AFT GALLEY AREA IAW B737-700 SRM 53-70-51-2R-6 REPAIR 6. THIS REPAIR IS CATEGORY A NO FURTHER ACTIONS OR ADDITIONAL INSPECTIONS ARE REQUIRED. SEE INDIVIDUAL SIGN OFF BELOW.;[05] PERFORMED PERMANENT REPAIR LOCATED ON FLOOR BEAM 986.5 AT LEVEL STR 17L WL 208.1 BTW LBL 40 UP TO LBL 49 AT AFT GALLEY AREA IAW B737-700 SRM 53-70-51-2R-6 REPAIR 6. THIS REPAIR IS CATEGORY A NO FURTHER ACTIONS OR ADDITIONAL INSPECTIONS ARE REQUIRED. SEE INDIVIDUAL SIGN OFF BELOW.<BR>CERTIFIED AS RII

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