# SDR CALA2025052905073

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 22, 2025
- Submitted: May 29, 2025
- Operation: Air carrier
- Aircraft: [N12225](https://openairdocs.org/aircraft/N12225), registered now
- Make and model: Boeing 737824
- Aircraft serial: 28934
- Aircraft time: 79,690 hours, 29,441 cycles
- System (JASC): [5312 · Fuselage Main, Bulkhead](https://openairdocs.org/jasc/5312)
- Part: Stiffener
- Part number: 111A13087
- Condition: Cracked
- Location: Zone 100
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2025052905073

## Discrepancy

LEFT W/W FWD BULKHEAD STIFFENER CRACKED AT LOWER REDIUS  STA 663.75  LBL 25.  REMOVED AND REPLACED STIFFENER ON LEFT W/W FWD BULKHEAD STA 663.75 LBL 25 REF.  B737-800, SRM 51-40-02-0G-0 AND DWG #111A1000.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.