# SDR CALA2025072907037

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 27, 2025
- Submitted: July 29, 2025
- Operation: Air carrier
- Aircraft: [N78524](https://openairdocs.org/aircraft/N78524), registered now
- Make and model: Boeing 737824
- Aircraft serial: 31642
- Aircraft time: 47,212 hours, 17,161 cycles
- System (JASC): [5512 · Horizontal Stabilizer, Plate/Skin](https://openairdocs.org/jasc/5512)
- Part: Skin
- Part number: 186A200041
- Condition: Cracked
- Location: Zone 300
- Stage of operation: IN
- How discovered: E
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2025072907037

## Discrepancy

C-SCAN INSPECTION REVEALED CRACK AT BOTTOM SKIN R/H HORIZ.STAB. RIB STA. 157.10 APPROX. 8" FWD OF AFT SPAR.  RT HORIZONTAL STAB LOWER SKIN REPAIR AT RIB STATION 157.10.  NEED REPEAT INSPECTION IRW SRM 55-10-01-2R-11 REPAIR #11 CATEGORY B REPAIR.

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