# SDR SWAA2023122123724

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 21, 2023
- Submitted: December 21, 2023
- Operation: Air carrier
- Aircraft: [N7881A](https://openairdocs.org/aircraft/N7881A), registered now
- Make and model: Boeing 737-7CT
- Registry model: [Boeing 737-7CT](https://openairdocs.org/model/boeing-737-7ct) (OpenAirDocs)
- Aircraft serial: 35084
- Aircraft time: 50,539 hours, 26,785 cycles
- System (JASC): [5512 · Horizontal Stabilizer, Plate/Skin](https://openairdocs.org/jasc/5512)
- Part: Skin
- Part number: UNKNOWN
- Condition: Cracked
- Location: Zn 300 Stabilize
- 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/SWAA2023122123724

## Discrepancy

CRACK FOUND ON LT HORIZONTAL STAB. LOWER IN-SPAR SKIN AT STA. 193.90 RIB; 17' APPROX. FROM L/E; I/B ROW (CRACK LENGTH 0.50') CRACK FOUND ON LT HORIZONTAL STAB. LOWER IN-SPAR SKIN AT STA. 193.90 RIB 17' APPROX. FROM L/E I/B ROW (CRACK LENGTH 0.50')<[01] ACCOMPLISHED REPAIRS AT L/H HORIZONTAL STAB LOWER INSPAR SKIN AT STA 193.90 RIB 17'APROXIMATELY FROM L/E REF SRM 55-10-01-2R-11 REPAIR 11. REPAIR INSPECTION REQUIREMENTS ARE AS FOLLOWS: <BR>INSPECTION THRESHOLD IS 56;000 TOTAL FLIGHT CYCLES. A DETAILED VISUAL INSPECTION WILL BE REQUIRED AT AN INTERVAL OF 9;000 FLIGHT CYCLES AND AN EXTERNAL LOW FREQUENCY EDDY CURRENT (LFEC) INSPECTION AT INTERVAL OF 9;000 FLIGHT CYCLES.

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