# SDR SWAA2021102625520

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 3, 2021
- Submitted: October 26, 2021
- Operation: Air carrier
- Aircraft: [N232WN](https://openairdocs.org/aircraft/N232WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32500
- Aircraft time: 53,002 hours, 31,465 cycles
- System (JASC): [5313 · Fuselage Main, Longeron/Stringer](https://openairdocs.org/jasc/5313)
- Part: Stringer
- Condition: Cracked
- Location: Fuselage
- Stage of operation: IN
- 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/SWAA2021102625520

## Discrepancy

CRACKED STRINGER 26R, BS 540, WL 153. REMOVED FASTENERS FROM STRINGER IAW SRM 51-40-02-0G-0.  EVALUATED CRACK AND FOUND OUT OF LIMITS IAW SRM 53-00-03-1A-1, PARA 4A(2)(A)1.   FABRICATED, LOCATED & DRILLED A NEW STRINGER SECTION AND SPLICE IAW SRM 53-00-03-2R-1, FIG 205.  APPLIED CHEMICAL CONVERSION COATING ON REPAIR PARTS IAW SRM 53-00-03-2R-1, PARA 4.I.   APPLIED PRIMER ON REPAIR PARTS IAW SRM 53-00-03-2R-1.  PERFORMED VISUAL INSPECTION,  NO MORE DAMAGE FOUND IAW SRM 53-00-03-2R-1, REPAIR 1 STEP 4B(1).   HFEC INSPECTED CUT EDGES IAW NDTM PART 6 51-00-00 PROCEDURE 23; NO CRACKS NOTED.  INSTALLED THE NEW STRINGER SECTION AND SPLICE IAW SRM 53-00-03-2R-1, REPAIR 1, SOPM 20-50-19 AND DWG 143A3230 REV A.

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