SDR SWAA2025052965999

Service difficulty report · Stiffener · Boeing 7377H4

Difficulty date: April 30, 2025
Submitted: May 29, 2025
Operation: Air carrier
Aircraft: N291WN
Make and model: Boeing 7377H4
Aircraft serial: 32539
Aircraft time: 58,271 hours, 34,957 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Stiffener
Condition: Cracked
Location: Zone 100
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 ON VERTICAL STIFFENER LOC BS663 AT LEVEL LBL 25 LOWER SIDE 2025-307647 <[01]. REPLACED VERTICAL STIFFENER AND FASTENERS. LOC BS663 AT LEVEL LBL 25 LOWER SIDE.IAW B737-700 SRM 51-40-02 SRM 51-10-02 ITEM 9 DWG 111A1000 SHEET 259 REV.A. SEE INDIVIDUAL SIGN OFF BELOW; [02] REPLACED VERTICAL STIFFENER AND FASTENERS.LOC BS663 AT LEVEL LBL 25 LOWER SIDE.IAW B737-700 SRM 51-40-02 SRM 51-10-02 ITEM 9 DWG 111A1000 SHEET 259 REV.A. SEE INDIVIDUAL SIGN OFF BELOW.

More about the Boeing 737-7H4