Service difficulty report · Stringer · Boeing 7377H4

Difficulty date
December 3, 2022
Submitted
January 9, 2023
Operation
Air carrier
Aircraft
N439WN
Make and model
Boeing 7377H4
Aircraft serial
29834
Aircraft time
64,965 hours, 38,601 cycles
Part
Stringer
Condition
Corroded
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

CORROSION STRINGER 28L LOCATED BS360 TO BS380 AND WL149.5 AT EQUIPMENT ELECTRONIC COMP 2022-664448<[01] TOOL USED ULTRASONIC EQUIPMENT P/N: 45MG; S/N: 221859911; DUE DATE: 07-NOV-23.;[02] TOOL USED: ET EQUIPMENT P/N: NORTEC 500D; S/N: N500X12101V022233; DUE DATE: 30-AUG-23;[03] TOOL USED: TEMPERATURE CONTROLLER: P/N: P3015GOES00000; S/N: 112031023; DUE DATE: 01-FEB-23; TEMPERATURE CONTROLLER: P/N: P3015GOES00000; S/N: 112820025; DUE DATE: 01-FEB-23.;[04] REPAIRED STRINGER 28L BETWEEN BS 360 TO BS 400 AND WL149.5 AT EQUIPMENT ELECTRONIC COMPARTMENT IAW B737-700 SRM 53-00-03-2R-1 REPAIR 1. AND DWG: 143A3230 REV: - SEE INDIVIDUAL SINGOFFS BELOW.;[05] REPAIRED STRINGER 28L BETWEEN BS 360 TO BS 400 AND WL149.5 AT EQUIPMENT ELECTRONIC COMPARTMENT IAW B737-700 SRM 53-00-03-2R-1 REPAIR 1. AND DWG: 143A3230 REV: - SEE INDIVIDUAL SINGOFFS BELOW.<BR><BR>RII ACCOMPLISHED

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