# SDR SWAA2024030748449

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 4, 2024
- Submitted: March 7, 2024
- Operation: Air carrier
- Aircraft: [N926WN](https://openairdocs.org/aircraft/N926WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 36629
- Aircraft time: 51,481 hours, 31,307 cycles
- System (JASC): [5510 · Horizontal Stabilizer Structure](https://openairdocs.org/jasc/5510)
- Part: Stiffener
- Part number: UNKNOWN
- 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/SWAA2024030748449

## Discrepancy

R/H HORIZONTAL STAB INTERNAL SURFACE RIB #5 STIFFENER #3 CRACKED.<[01] REMOVED DAMAGE PART OF STIFFENER #3 AT RIB #5; VERIFIED CUT EDGES OF INITIAL PARTS SURFACE ROUGNESS OF 63 MICROINCHES RA REF. SRM 55-10-09-2R-4 TOOL USED B/C 172329 NO DUE DATE;<BR>LOCATED AND DRILLED ALL REPAIR PARTS AND TRIM AS REQUIRED; VERIFIED CUT EDGES OF REPAIR PARTS;AND INITIAL PARTS SURFACE ROUGNESS OF 125 MICROINCHES RA REF SRM 55-10-09-2R-4 TOOL USED B/C:171854 NO DUE DATE;<BR>INSTALLED REPAIR PARTS(T-SECTION;ANGLE AND SHIMS) PER REF SRM 55-10-09-2R-4;[02] RII / VERIFIED INSTALLED REAIRE AT #3 STIFFENER IS AS ENTRY #1 STATES .

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