Service difficulty report · Stringer · Boeing 7377H4

Difficulty date
December 14, 2023
Submitted
January 22, 2024
Operation
Air carrier
Aircraft
N457WN
Make and model
Boeing 7377H4
Aircraft serial
33856
Aircraft time
65,535 hours, 39,332 cycles
Part
Stringer
Part number
UNKNOWN
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 STRINGER 23R BS 540; WL 163 FWD CARGO COMPARTMENT 2023-766576<[01] TOOL USED ULTRASONIC THICKNESS GAUGE P/N: 45MG; S/N: 130061901; CAL DUE DATE: 09-JUN-24;[02] TOOL USED: TEMPERATURE CONTROLLER P/N P3015GOES00000 S/N 142811020 DUE DATE: 25-JAN-24. TEMPERATURE CONTROLLER P/N P3015GOES00000 S/N 142811019 DUE DATE: 25-JAN-24.;[03] PERFORMED PERMANENT REPAIR ON STRINGER 23R LOCATED BS 500D TO BS540 IN FWD CARGO COMPARTMENT IAW B737-700 SRM 53-00-03-2R-1 REPAIR 1 SEE INDIVIDUAL STEP SING-OFFS BELOW;[04] PERFORMED PERMANENT REPAIR ON STRINGER 23R LOCATED BS 500D TO BS540 IN FWD CARGO COMPARTMENT IAW B737-700 SRM 53-00-03-2R-1 REPAIR 1 SEE INDIVIDUAL STEP SING-OFFS BELOW<BR>RII

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