# SDR SWAA2021112929768

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 12, 2021
- Submitted: November 29, 2021
- Operation: Air carrier
- Aircraft: N777QC
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 30592
- Aircraft time: 68,673 hours, 40,726 cycles
- System (JASC): [5511 · Horizontal Stabilizer, Spar/Rib](https://openairdocs.org/jasc/5511)
- Part: Rib
- Condition: Cracked
- Location: L/H Horiz. 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/SWAA2021112929768

## Discrepancy

L/H HORIZ STAB L/E PANEL 331B 4 RIB FROM I/B CRACKED.   PERFORMED HFEC INSP ON LH HORIZ STAB L/E PANEL 331B 4 RIB IAW NDT P6 51-00-00 PROC.23.  CRACK CONFIRMED.   REMOVED DAMAGE RIB IAW SRM 51-40-02-0G-0.  LOCATED AND DRILLED A NEW RIB IAW SRM 51-40-05-0G-0.   INSTALLED THE NEW RIB IAW SRM 51-40-02-0G-0.

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