# SDR SWAA2013010711238

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 20, 2012
- Submitted: January 8, 2013
- Operation: Air carrier
- Aircraft: N793SA
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 27888
- Aircraft time: 43,557 hours, 25,320 cycles
- System (JASC): [5312 · Fuselage Main, Bulkhead](https://openairdocs.org/jasc/5312)
- Part: Stiffener
- Part number: 111A100
- Condition: Cracked
- Location: Lt Mlg Ww
- 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/SWAA2013010711238

## Discrepancy

LEFT MAIN W/W FWD BULKHEAD STA-663, LBL-27, LOWER CORD VERT STIFFENER CRACKED AT LOWER RADIUS.  REMOVED AND REPLACED DAMAGE VERTICAL STIFFENER AT BS 663 LBL 27 IAW SRM 51-40-02 & BOEING DOCUMENT 111A100.

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