# SDR SWAA2021071988787

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 28, 2021
- Submitted: July 19, 2021
- Operation: Air carrier
- Aircraft: [N297WN](https://openairdocs.org/aircraft/N297WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32542
- Aircraft time: 46,041 hours, 27,557 cycles
- System (JASC): [5512 · Horizontal Stabilizer, Plate/Skin](https://openairdocs.org/jasc/5512)
- Part: Skin
- 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/SWAA2021071988787

## Discrepancy

CRACK FOUND AT EXTERNAL RT LOWER HORIZONTAL STABILIZER SKIN AT STA 184.70; APPROX. 9.5' FWD FROM REAR SPAR; CRACK LENGTH 0.625'. / [01] PERFORMED HFEC INSP ON RT HORIZ STAB SKIN STA 184.70 IAW B737 NDT P6 51-00-00 PROC 23; CRACK NOTED (MARKED) [02] CRACK LENGTH 0.600';[04] HFEC INSP WAS PERFORMED ON RT HORIZ STAB SKIN STA 184.70 IAW B737 NDT P6 51-00-00 PROC 23; CRACK NOTED (MARKED); APPROX LENGTH IS 0.625' (0.600' ENTERED IN ERROR) [05] REMOVED PREVIOUS REPAIR DOUBLER FROM R/HORIZONTAL STAB LOWER SKIN AT AFT CHORD AREA NEXT TO CRACK AS PER B737-700 SRM 51-40-02-0G-0.; [06] PERFORMED HFEC INSP ON REPAIR DOUBLER FROM R/HORIZONTAL STAB LOWER SKIN AT AFT CHORD AREA NEXT TO CRACK IAW B737 NDT PART 6 51-00-00 PROC. 23. NO CRACKS. [29] REPAIRED CRACK AT EXTERNAL RT LOWER HORIZONTAL STAB. SKIN STA 184.70 APPROX. 9.5' FWD FROM REAR SPAR AS PER EA #21-155-01890; [30] REPAIR PERFORMED AS GIVEN IN EA 21-155-01890

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.