# SDR SWAA2023010975394

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 24, 2022
- Submitted: January 9, 2023
- Operation: Air carrier
- Aircraft: [N439WN](https://openairdocs.org/aircraft/N439WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 29834
- Aircraft time: 64,965 hours, 38,601 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: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2023010975394

## Discrepancy

CRACK INDICATION FOUND ON LT HORIZONTAL STABILIZER LOWER SKIN PANEL. LOCATED AT STAB STA 193.9 RIB AND 16.5 INCH. FROM FRONT SPAR. INBOARD SIDE OF RIB. CRACK LENGTH = 0.500 INCH. APPROX. 2022-664106<[01] TOOL USED: EDDY CURRENT FLAW DETECTOR; P/N: NORTEC 600D; S/N: 190023010; DUE DATE: 14-FEB-23;[02] PERFORMED REPAIR ON LT HORIZONTAL STABILIZER LOWER SKIN PANEL LOC AT STAB STA 193.9 AND 16.5 INCH FROM FRONT SPAR I.A.W. B737-700 SRM 55-10-01-2R-11 REPAIR 11.<BR>SEE INDIVIDUAL SIGN-OFF BELOW;[03] PERFORMED REPAIR ON LT HORIZONTAL STABILIZER LOWER SKIN PANEL LOC AT STAB STA 193.9 AND 16.5 INCH FROM FRONT SPAR I.A.W. B737-700 SRM 55-10-01-2R-11 REPAIR 11.<BR>SEE INDIVIDUAL SIGN-OFF BELOW.. RII ITEM

---
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.