# SDR CALA2026090919334

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 28, 2026
- Submitted: September 9, 2026
- Operation: Air carrier
- Aircraft: [N78509](https://openairdocs.org/aircraft/N78509), registered now
- Make and model: Boeing 737824
- Aircraft serial: 31638
- Aircraft time: 58,307 hours, 21,354 cycles
- Engine: Cfmint CFM567B27
- System (JASC): [5512 · Horizontal Stabilizer, Plate/Skin](https://openairdocs.org/jasc/5512)
- Part: Skin
- Part number: 182A400116
- 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/CALA2026090919334

## Discrepancy

TWO CRACKS FOUND AT RT HORIZONTAL STAB LOWER IN-SPAR SKIN AT HSS 138.70,  10 INCHES FWD OF T/E,  REPAIRED RT HORIZONTAL STAB LOWER SKIN IAW SRM 55-10-01-2R-11. REPAIR 11.

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