# SDR SWAA2026030973417

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 23, 2026
- Submitted: March 9, 2026
- Operation: Air carrier
- Aircraft: [N444WN](https://openairdocs.org/aircraft/N444WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 29839
- Aircraft time: 74,400 hours, 44,298 cycles
- System (JASC): [5313 · Fuselage Main, Longeron/Stringer](https://openairdocs.org/jasc/5313)
- Part: Stringer
- Condition: Cracked
- Location: Zone 100
- Stage of operation: IN
- How discovered: E
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2026030973417

## Discrepancy

POSSIBLE CRACK INDICATION ON STRINGER 7L OF AFT PRESSURE BULKHEAD CENTER WEB.    REMOVED PRIMER IAW AMM 51-21-11,  VERIFIED CRACK IAW NDT MANUAL 51-00-00, PROCEDURE 23, STEP 7.D. (2) DYE PENETRANT. MEASURES .0973,

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