# SDR SWAA2023080476690

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 9, 2023
- Submitted: August 4, 2023
- Operation: Air carrier
- Aircraft: [N913WN](https://openairdocs.org/aircraft/N913WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 29840
- Aircraft time: 49,236 hours, 29,953 cycles
- System (JASC): [5531 · Vertical Stabilizer, Spar/Rib](https://openairdocs.org/jasc/5531)
- Part: Rib
- Part number: UNKNOWN
- Condition: Cracked
- Location: Zn 300 Stabilize
- 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/SWAA2023080476690

## Discrepancy

CRACK RIB 8 ON ACCESS PANEL 321A AT VERTICAL STABILIZER 2023-431281<[01] TOOL USED: TEMPERATURE CONTROLLER: P/N P3015GOES00000; S/N 142811020; DUE DATE: 25-JAN-24.;[02] REPLACED RIB 8 LOCATED ON ACCESS PANEL 321A AT VERTICAL STABILIZER I.A.W B737-700 SRM 51-10-02 AND DWG 174A0103 REV -.<BR>SEE INDIVIDUAL SINGOFFS BELOW;[03] CORRECTED STEP 2: REPLACED RIB 8 LOCATED ON ACCESS PANEL 321A AT VERTICAL STABILIZER I.A.W B737-700 SRM 51-10-02 AND DWG 174A0103 REV -.<BR>SEE INDIVIDUAL SIGNOFFS BELOW;[04] CORRECTIVE ACTION STEP 3 CERTIFIED

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