# SDR CALA2017012300160

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 23, 2017
- Submitted: January 23, 2017
- Operation: Air carrier
- Aircraft: [N78438](https://openairdocs.org/aircraft/N78438), registered now
- Make and model: Boeing 737924ER
- Aircraft serial: 33533
- Aircraft time: 25,746 hours, 8,696 cycles
- System (JASC): [5512 · Horizontal Stabilizer, Plate/Skin](https://openairdocs.org/jasc/5512)
- Part: Skin
- Part number: 182A400115
- Condition: Cracked
- Location: Horizontal Stab
- 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/CALA2017012300160

## Discrepancy

LEFT HORIZONTAL STAB LOWER  SPAR / SKIN INSPECTION, FOUND ONE CRACK INDICATION AT HSS 129.50, 18 INCHES FROM AFT SPAR.  INSTALLED EXTERNAL DOUBLER IAW SRM 55-10-01 REPAIR 11.

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