# SDR SWAA2021060473220

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 15, 2021
- Submitted: June 4, 2021
- Operation: Air carrier
- Aircraft: [N220WN](https://openairdocs.org/aircraft/N220WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32491
- Aircraft time: 52,961 hours, 31,490 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/SWAA2021060473220

## Discrepancy

LH HORIZ STAB RIB AT ST A 120.3 FWD LOWER FLANGE COMMON TO SKIN I/B FASTENER HOLE CRACKED 3RD FROM FWD (MARKED) ; / REMOVED DAMAGED AREA FROM LH HORIZ STAB RIB AT STA 120.3 FWD LOWER FLANGE COMMON TO SKIN I/B FASTENER HOLE PER B737 SRM 51-10-02-0G-0. REPAIRED FLANGE PER EA 21-155-01399-WIP1 REV P1 AND FINAL; VERIFIED STEP 6 C/W IAW EA-21-155-01399 P1 AND FINAL<BR>FINAL AUDIT C/W; FINAL AUDIT C/W

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.