# SDR SWAA2021080491833

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 7, 2021
- Submitted: August 4, 2021
- Operation: Air carrier
- Aircraft: N752SW
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 29804
- Aircraft time: 74,046 hours, 43,386 cycles
- System (JASC): [5511 · Horizontal Stabilizer, Spar/Rib](https://openairdocs.org/jasc/5511)
- Part: Rib
- 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/SWAA2021080491833

## Discrepancy

CRACK LEADING EDGE RIB AT LEADING EDGE STATION 105.25 AT LT HORIZONTAL STABILIZER ; 2021-319441 / [01] TOOL USED CALIPER PN: DIGITAL 150 SN: AE 412599 DUE DATE 21-MAY 22; [02] REPLACED LEADING EDGE RIB AT LEADING EDGE STATION 105.25 AT LT HORIZONTAL STABILIZER IAW B737-700 DWG 186A1001 REV. A SRM 51-10-02 AND SRM 51-10-02 ITEM 9 P/N USED 186A1304-1 PO 2021-172657; [03] REPLACED LEADING EDGE RIB AT LEADING EDGE STATION 105.25 AT LT HORIZONTAL STABILIZER IAW B737-700 DWG 186A1001 REV. A SRM 51-10-02 AND SRM 51-10-02 ITEM 9 P/N USED 186A1304-1 PO 2021-172657

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