Service difficulty report · Stringer · Boeing 7377H4

Difficulty date
July 31, 2024
Submitted
September 5, 2024
Operation
Air carrier
Aircraft
N494WN
Make and model
Boeing 7377H4
Aircraft serial
33868
Aircraft time
65,251 hours, 39,171 cycles
Part
Stringer
Condition
Cracked
Location
Zone 100
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 STRINGER 25L LOCATED ON BS540 AND WL156 FWD CARGO COMPARTMENT 2024-473141<[01] TOOL USED: ULTRASONIC THICKNESS GAGE; P/N: 45 MG; S/N: 130060401; DUE DATE: 28-MAR-25.;[02] TOOL USED EDDY CURRENT EQUIPMENT PN: NORTEC 600D; SN: 220272512; DUE DATE: 08-JAN-25;[03] TOOL USED: TEMPERATURE CONTROLLER P/N: P3015GOES00000; S/N: 142811020; DUE DATE: 23-JAN-25. TEMPERATURE CONTROLLER P/N: P3015GOES00000; S/N: 142811019; DUE DATE: 23-JAN-25.;[04] REPAIRED STRINGER 25L LOC. BTW BS 500D TO BS 540 FWD CARGO COMPARTMENT [7] REPLACEMENT STRINGER SECTION; [2] CHANNEL; [3] ANGLES (2EA) AND FASTENERS IAW B737-700 SRM 53-00-03-2R-1 REPAIR 1; 4.L AND DWG #143A3230; SHEET 121. REV.A.<BR>SEE INDIVIDUAL SIGNS OF BELOW.;[05] CORRECTED STEP 4.<BR>REPAIRED STRINGER 25L LOC. BTW AND BS 500D TO BS 540 FWD CARGO COMPARTMENT IAW B737-700 SRM 53-00-03-2R-1 REPAIR 1 AND DWG #143A3230; SHEET 121. REV.A.<BR>SEE INDIVIDUAL SIGNS OF BELOW;[06] CORRECTED STEP 5.<BR>REPAIRED STRINGER 25L LOC. BTW BS 500D AND BS 540 FWD CARGO COMPARTMENT IAW B737-700 SRM 53-00-03-2R-1 REPAIR 1 AND DWG #143A3230; SHEET 121. REV.A.<BR>SEE INDIVIDUAL SIGNS OF BELOW;[07] CERTIFIED REPAIR PER STEP 6<BR>RII ACCOMPLISHED

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