Service difficulty report · Keelbeam · Boeing 7377H4

Difficulty date
October 4, 2022
Submitted
November 1, 2022
Operation
Air carrier
Aircraft
N204WN
Make and model
Boeing 7377H4
Aircraft serial
29855
Aircraft time
59,632 hours, 35,273 cycles
Part
Keelbeam
Condition
Cracked
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

CRACK BILGE AREA ON KEEL BEAM BETWEEN BS727 TO BS727A AND STR 27L AT AFT CARGO COMPARTMENT 2022-517249 / [01] TOOL USED: P/N: NORTEC 600D; S/N: 60009161631; DUE DATE: 03-DEC-22;[02] TOOL USED DIGITAL CALIPER P/N 500-197-30 S/N: B20189515 DUE DATE: 30-NOV-22.;[03] TOOL USED FOR-PRO-104 S/N: PRO-3384 DUE DATE: 27-JUN-23.;[04] TOOLS USED: TEMPERATURE CONTROLLER P/N: P3015GOES00000; S/N: 112031023; DUE DATE: 01-FEB-23; TEMPERATURE CONTROLLER P/N: P3015GOES00000; S/N: 11112820025; DUE DATE: 01-FEB-23.;[05] TOOLS USED: POWER PACK P/N: FMK0003223; S/N: PE0412/63335; DUE DATE: 26-JAN-23; MULTIMETER P/N: FLUKE 87-5 ; S/N: 98740068; DUE DATE: 08-NOV-22; THERMOMETER P/N: FLUKE 566; S/N: 42530075WS; DUE DATE: 20-DEC-22.;[06] TOOL USED:THERMOMETER P/N: FLUKE 66;S/N:AE-27240;DUE DATE:13-APR-23.MULTIMETER P/N:FLUKE 87-5;S/N:98740068;DUE DATE:08-NOV-22.POWER PACK P/N:FMK00003223;S/N:PE 0412/63335;DUE DATE:26-JAN-23.;[07] PERMANENT REPAIR AND FASTENERS BILGE AREA ON KEEL BEAM LOCATED BETWEEN BS727 TO BS727A AND STR 27L AT AFT CARGO COMPARTMENT IAW B737-700 SRM 53-60-12-2R-1 REPAIR 1; FIGURE 202. SEE INDIVIDUAL SING OFFS BELLOW.;[08] TASK CARD COMPLETED

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