# SDR CALA2026082718966

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 17, 2026
- Submitted: August 27, 2026
- Operation: Air carrier
- Aircraft: [N53441](https://openairdocs.org/aircraft/N53441), registered now
- Make and model: Boeing 737924
- Aircraft serial: 30131
- Aircraft time: 53,383 hours, 19,104 cycles
- System (JASC): [5100 · Standard Practices/Structures](https://openairdocs.org/jasc/5100)
- Part: Skin
- Part number: 182A400111
- Condition: Fom
- Location: Zone 300
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026082718966

## Discrepancy

LEFT HORIZONTAL STAB LOWER SKIN AT BS 92.70 BETWEEN NR 2 & 3 VERTICAL STIFFENER REQUIRES CUTOUT TO FOM.   COMPLIED WITH CUTOUT LOWER SKIN AT STA 92.70 BETWEEN NR 2 & 3 VERTICAL STIFFENERS IAW SRM 55-10-01-2R-11. ACCOMPLISHED SURFACE HFEC IN SP OF CUTOUT & AREA AROUND IAW NTM 51-00-00.  IAW SRM 55-10-01-2,  FABRICATED, LOCATED, DRILLED AND INSTALLED IAW  SRM 55-10-01-2R-11. TOPCOAT REPAIR AREA IAW AMM 51-21-00.  REPAIR ON SKIN IS A CATEGORY B REPAIR THAT REQUIRES REPEAT INSPECTIONS AT 9,000 FLIGHT CYCLE INTERVALS WITH AN INSPECTION THRESHOLD OF 56,000 FLIGHT CYCLES.

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