# SDR SWAA2022060902031

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 2, 2022
- Submitted: June 9, 2022
- Operation: Air carrier
- Aircraft: [N477WN](https://openairdocs.org/aircraft/N477WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 33988
- Aircraft time: 60,414 hours, 35,826 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Threshold Web
- Condition: Corroded
- Location: Aft Cargo
- 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/SWAA2022060902031

## Discrepancy

CORROSION ON AFT CARGO BAY THRESHOLD AT RBL 26 BS 807+3; BS 807+6; BS 827+19. / [01] VERIFIED APPLICABILITY FOR ALLOWABLE DAMAGE LIMITS IAW SRM SRM 53-60-15-1A-1 ALLOWABLE DAMAGE 1 AND IDENTIFICATION IAW SRM 53-60-15-0I-1 IDENTIFICATION 1;[02] UPDATE STEP 1-3;[03] CERTIFIED CORRECTIVE ACTION 1-2.;[04] STEP 1-3 VERIFIED OUT OF LIMITS AND CORRECTIVE ACTION 1.;[05] RECEIVED A NEW ACB DOOR THRESHOLD WEB PN 146A8123U25 FROM STORES REF PO 863713.<BR>LOCATED AND DRILLED NEW WEB IAW SRM 51-40-05 AND DWG 146A8120 REV -;[06] VERIFIED CORRECTIVE ACTION ENTRY 5.;[07] MEASUREMENTS;[08] UPDATED MEASUREMENTS;[09] VERIFIED CARD COMPLETE.

---
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.