# SDR SWAA2026091119542

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 3, 2026
- Submitted: September 11, 2026
- Operation: Air carrier
- Aircraft: [N7721E](https://openairdocs.org/aircraft/N7721E), registered now
- Make and model: Boeing 737-7BD
- Registry model: [Boeing 737-7BD](https://openairdocs.org/model/boeing-737-7bd) (OpenAirDocs)
- Aircraft serial: 34479
- Aircraft time: 65,336 hours, 35,532 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Stiffener
- Condition: Cracked
- Location: Zone 100
- Stage of operation: UK
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2026091119542

## Discrepancy

OTS - FUEL TANK STIFFENER AT STA 540, 26RBL CRACKED AT THE TOP REPAIRS. MX FERRIED FROM DAL._ REMOVED AND REPLACED VERTICAL STIFFENER FS 540 RBL 24.91 IAW B737 SRM 51-40-02-0G-0 AND DWG'S 111A6000 REV - AND 111A2001 REV -. VERIFIED REMOVED AND REPLACED VERTICAL STIFFENER FS 540 RBL 24.91 IAW B737 SRM 51-40-02-0G-0 AND DWG'S 111A6000 REV - AND 111A2001 REV -.

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