# SDR SWAA2021091498259 - Type: Service difficulty report (as reported; unverified) - Difficulty date: July 26, 2021 - Submitted: September 14, 2021 - Operation: Air carrier - Aircraft: [N446WN](https://openairdocs.org/aircraft/N446WN), registered now - Make and model: Boeing 737-7H4 - Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs) - Aircraft serial: 29842 - Aircraft time: 58,476 hours, 34,391 cycles - System (JASC): [5512 ยท 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/SWAA2021091498259 ## Discrepancy CRACK INDICATION ON RH HORIZONTAL STABILIZER LOWER IN-SPAR SKIN AT STATION 193.90; INBOARD SIDE OF RIB ; 16.750 INCH FROM FRONT SPAR. CRACK LENGTH IS 0.500 INCH. ; 2021-341980 / [01] REPAIRED EXTERNAL LOWER IN-SPAR SKIN AT STATION 193.30 INBOARD SIDE OF RIB 16.750 INCH FROM FRONT SPAR AT RH HORIZONTAL STABILIZER IAW B737-700 SRM 55-10-01-2R-11 REPAIR 11. MATERIAL USED ALUMINUM SHEET 2024T3 0.063 INCH 2020202354 AND ALUMINUM SHEET 2024T3 0.080 INCH PO 2021138258; [02] REPAIRED EXTERNAL LOWER IN-SPAR SKIN AT STATION 193.30 INBOARD SIDE OF RIB 16.750 INCH FROM FRONT SPAR AT RH HORIZONTAL STABILIZER IAW B737-700 SRM 55-10-01-2R-11 REPAIR 11. MATERIAL USED ALUMINUM SHEET 2024T3 0.063 INCH PO 2020202354 AND ALUMINUM SHEET 2024T3 0.080 INCH PO 2021138258; [03] REPAIRED EXTERNAL LOWER IN-SPAR SKIN AT STATION 193.30 INBOARD SIDE OF RIB 16.750 INCH FROM FRONT SPAR AT RH HORIZONTAL STABILIZER IAW B737-700 SRM 55-10-01-2R-11 REPAIR 11. MATERIAL USED ALUMINUM SHEET 2024T3 0.063 INCH PO 2020202354 AND ALUMINUM SHEET 2024T3 0.080 INCH PO 2021138258
RII ACCOMPLISHED --- 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.