# SDR SWAA2021070280736

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 6, 2021
- Submitted: July 2, 2021
- Operation: Air carrier
- Aircraft: [N7721E](https://openairdocs.org/aircraft/N7721E), registered now
- Make and model: Boeing 737-7BD
- Registry model: [Boeing 737-7BD](https://openairdocs.org/model/boeing-737-7bd) (OpenAirDocs)
- Aircraft serial: 34479
- Aircraft time: 50,877 hours, 26,372 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: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2021070280736

## Discrepancy

RIGHT STAB LEADING EDGE PANEL 8TH RIB FROM INBOARD END IS CRACKED ; / [01] REMOVED RH STAB LE RIB ASSY AT LE STA 142.45 IAW SRM 51-40-02-0G-0; [02] VERIFIED NEW RIB ASSY AS P/N 186A1308-2 A TAG IE0100 PER DWG 186A1308 REV-; [03] C/W STEP 2; [04] LOCATED AND DRILLED NEW RIB ASSY. IAW SRM 51-40-05-0G-0; [05] C/W STEP 4<BR>OK TO INSTALL; [06] INSTALLED NEW RIB ASSY AT LE STA 142.45 IAW SRM 51-40-02-0G-0; DWG 186A1308 REV -; [07] REMOVED AND REPLACED RIB ASSY AT LE STA 142.45 IAW SRM 51-40-02-0G-0; DWG 186A1308 REV -. RESTORED CIC IAW AMM 51-21-91; [08] C/W STEP7; [09] AUDIT C/W

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