# SDR ASAA2023081545097

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 15, 2023
- Submitted: September 14, 2023
- Operation: Air carrier
- Aircraft: [N611AS](https://openairdocs.org/aircraft/N611AS), registered now
- Make and model: Boeing 737790
- Aircraft serial: 29753
- Aircraft time: 72,303 hours, 37,838 cycles
- System (JASC): [5512 · Horizontal Stabilizer, Plate/Skin](https://openairdocs.org/jasc/5512)
- Part: Skin
- Part number: 182A4001
- Part serial: NSN
- Condition: Cracked
- Location: Unknown
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023081545097

## Discrepancy

R/H HORIZONTAL LOWER SKIN CRACKED APROX STA 94 AND REAR SPAR. GROUNDED - YES. REPAIRED SKIN IAW B737-700 SRM 55-10-01-2R-11, THIS IS A CAT B REPAIR WITH AN INSPECTIN THRESHOLD OF 56,000 TOTAL FLIGHT CYCLES, AND REPEAT INSPECTION. METHODS D.V.I AT 9000 FLIGHT CYCLES; EXTERNAL LOW FREQ EDDY CURRENT INSPECTION AT 9000 FLIGHT CYCLES. REFERENCE 737 NDT PART 6, 51-00-26 FIGURE 1.

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