# SDR TSAA1077005

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 2, 2010
- Submitted: March 4, 2010
- Operation: Air carrier
- Aircraft: [N840AL](https://openairdocs.org/aircraft/N840AL), registered now
- Make and model: Boeing 737-2X6C
- Registry model: [Boeing 737-2X6C](https://openairdocs.org/model/boeing-737-2x6c) (OpenAirDocs)
- Aircraft serial: 23124
- Aircraft time: 60,433 hours, 57,031 cycles
- Engine: Pwa JT8D17
- System (JASC): [5330 · Fuselage Main, Plate/Skin](https://openairdocs.org/jasc/5330)
- Part: Skin
- Condition: Cracked
- Location: Bs 540
- 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/TSAA1077005

## Discrepancy

DURING SCHEDULED 2B CK INSP A 3 CIRCUMFERENTIAL CRACK AT BS 540 BETWEEN S-0 AND S-1L WAS DISCOVERED. CONFIRMED WITH EDDY CURRENT INSP. MX ACTION CUTOUT DAMAGE CRACK, USE A .50" RADIUS CUT AT CORNERS, MAINTAINED 2DMINIMUM EDGE DISTANCE, LAY-OUT DOUBLER AND TRIPLER, LAY-OUT 3 AND 4 FASTENER ROWS BEYOND ALL SIDES OF CUTOUT, INSPECTED ALL FASTENER HOLES BY HFEC METHOD NO DEFECTS NOTED  AND INSTALLED REPAIR DOUBLER AND TRIPLER ASSY IAW SRM 53-30-3 FIG. 48 DETAIL XXII.

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