Service difficulty report · Floorbeam · Boeing 7377H4

Difficulty date
November 2, 2024
Submitted
December 10, 2024
Operation
Air carrier
Aircraft
N274WN
Make and model
Boeing 7377H4
Aircraft serial
32529
Aircraft time
57,880 hours, 34,803 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 STRUCTURE LOCATED BS986.3 WL208.1 AND LBL43 AT AFT GALLEY AREA 2024-685267<[01] TOOL USED STEP 6 ULTRASONIC THICKNESS GAGE PN: 45MG SN: 130064101; DUE DATE: 13-DEC-24;[02] ON STEP 9: TOOL USED EDDY CURRENT EQUIPMENT PN: NORTEC500D; SN: N500X1693P030456 DUE DATE: 14 APR 25.;[03] EQUIPMENT P/N PHASEC 3D; S/N 587435/07; DUE DATE 20-MAR-25 WAS USED ON STEP 11 AND STEP 12;[04] PERFORMED PERMANENT REPAIR LOCATED ON FLOOR BEAM BS986.5 WL208.1 BTW LBL38 TO LBL46 AT AFT GALLEY AREA. I.A.W B737-700 53-70-51-2R-6; REPAIR 6.<BR>SEE INDIVIDUAL SIGN OFF BELOW.;[05] CORRECTED STEP 4. PERFORMED PERMANENT REPAIR LOCATED ON FLOOR BEAM BS986.5 WL208.1 BTW LBL38 TO LBL46 AT AFT GALLEY AREA. I.A.W B737-700 SRM 53-70-51-2R-6; REPAIR 6.<BR>SEE INDIVIDUAL SIGN OFF BELOW.;[06] PERFORMED PERMANENT REPAIR LOCATED ON FLOOR BEAM BS986.5 WL208.1 BTW LBL38 TO LBL46 AT AFT GALLEY AREA. I.A.W B737-700 SRM 53-70-51-2R-6; REPAIR 6.<BR>SEE INDIVIDUAL SIGN OFF BELOW.RII ITEM

More about the Boeing 737-7H4