# SDR SWAA2020092815427

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 10, 2020
- Submitted: September 28, 2020
- Operation: Air carrier
- Aircraft: [N7852A](https://openairdocs.org/aircraft/N7852A), registered now
- Make and model: Boeing 737-71B
- Registry model: [Boeing 737-71B](https://openairdocs.org/model/boeing-737-71b) (OpenAirDocs)
- Aircraft serial: 29371
- Aircraft time: 40,277 hours, 25,426 cycles
- System (JASC): [5510 · Horizontal Stabilizer Structure](https://openairdocs.org/jasc/5510)
- Part: Stiffener
- Condition: Cracked
- Location: Horizontal 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/SWAA2020092815427

## Discrepancy

RT HORIZONTAL STAB RIB ASSY NR 4 STIFFENER NR 4 WITH A CRACK AT LOWER SECTION STAB STA 120.30.  CUT OUT DAMAGE AT STIFFNER WEB AND EXISTING HOLE ON LOWER CHORD, AS PER B737-700 SRM 55-10-09-2R-5 REPAIR 5 FIG 204.  INSTALLED T-SECTION (1) ANGLE (2);SHIMS (4) AND FILLER(3), AS PER B737-700 SRM 55-10-09-2R-5 REPAIR 5 AND 51-40-02-0G-0.

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