# SDR SWAA2021102833994

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 19, 2021
- Submitted: October 28, 2021
- Operation: Air carrier
- Aircraft: [N7831B](https://openairdocs.org/aircraft/N7831B), registered now
- Make and model: Boeing 737-7CT
- Registry model: [Boeing 737-7CT](https://openairdocs.org/model/boeing-737-7ct) (OpenAirDocs)
- Aircraft serial: 32752
- Aircraft time: 58,334 hours, 29,483 cycles
- System (JASC): [5512 · Horizontal Stabilizer, Plate/Skin](https://openairdocs.org/jasc/5512)
- Part: Skin
- Condition: Cracked
- Location: L/H Horiz. Stab.
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2021102833994

## Discrepancy

CRACK INDICATION FOUND ON LEFT HORIZONTAL STABILIZER LOWER SKIN AT STAB STA 193.90. 15.5' FROM FRONT SPAR AND I/B OF DRAIN HOLE. LENGTH OF CRACK - 0.787' ; NDTM PART 6;51-00-28 / [24] ACCOMPLISHED REPAIR ON LT HORIZONTAL STABILIZER LOWER SKIN AT STAB STA 193.90 IAW B737-700 SRM 55-10-01-2R-11. THIS IS A CATEGORY B REPAIR; REINSPECTION REQUIRED AT THRESHOLD 56;000 FLIGHT CYCLES; REPEAT INSPECTION EVERY 9;000 FLIGHT CYCLES PER B737-700 SRM 55-10-01-2R-11; REPAIR 11; STEP 5; TABLE 204.; [25] VERIFIED STEP 23 AND 24

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