# SDR CALA2026012213130

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 19, 2025
- Submitted: January 22, 2026
- Operation: Air carrier
- Aircraft: [N54241](https://openairdocs.org/aircraft/N54241), registered now
- Make and model: Boeing 737824
- Aircraft serial: 28953
- Aircraft time: 79,178 hours, 29,560 cycles
- System (JASC): [5511 · Horizontal Stabilizer, Spar/Rib](https://openairdocs.org/jasc/5511)
- Part: Rib
- Part number: 186A1303
- Condition: Cracked
- Location: Zone 300
- 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/CALA2026012213130

## Discrepancy

RIGHT HORIZIZONAL STAB INBD SIDE OF RIB AT HSS 92.70 IS CRACKED AT THE LOWER TRANSITION RADIUS OF THE NR 3 VERTICAL STIFFENER.  REPAIRED THE NR 3 VERTICAL STIFFENER  INBD SIDE OF RIB AT HSS 92.70 IAW SRM 55-10-09-2R-4, TABLE 201, REPAIR 4.

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