Service difficulty report · Rib · Boeing 7377H4

Difficulty date
March 15, 2025
Submitted
April 7, 2025
Operation
Air carrier
Aircraft
N939WN
Make and model
Boeing 7377H4
Aircraft serial
36646
Aircraft time
51,518 hours, 31,311 cycles
Part
Rib
Condition
Cracked
Location
Zone 300
Stage of operation
IN
How discovered
V
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 RIB 8 ON ACCESS PANEL 321A AT VERTICAL STABILIZER 2025-203809<[01] TOOLS USED: TEMPERATURE CONTROLLER: P/N: P3015GOES00000; S/N: 142811020; DUE DATE: 29-JAN-26.;[02] REPLACED RIB 8 AND FASTENERS LOCATED ON PANEL 312A AT VERTICAL STABILIZER IAW B737-700 SRM 51-40-02 AND DRAWING 174A1008 SHEET 2 REV C.SEE INDIVIDUAL STEP SIGNOFF BELOW;[03] REPLACED RIB 8 AND FASTENERS LOCATED ON PANEL 312A AT VERTICAL STABILIZER IAW B737-700 SRM 51-40-02 AND DRAWING 174A1008 SHEET 2 REV C.SEE INDIVIDUAL STEP SIGNOFF BELOW

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