# SDR SWAA2022082232668

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 22, 2022
- Submitted: August 22, 2022
- Operation: Air carrier
- Aircraft: N490WN
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32476
- Aircraft time: 59,880 hours, 35,571 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Web
- Condition: Corroded
- Location: Aft Cabin
- 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/SWAA2022082232668

## Discrepancy

CORROSION ON WEB AT AFT CABIN BS989 RBL37. / [01] CORROSION ON WEB AT AFT CABIN BS989 RBL37 WL 208 P/N 147A5744-14 WITH NEXT DIMENSION L=0.950'' W=0.800 X= 0.010 OT=0.050 RT=0.040 WITH NEXT TOOL DEPTH GAGE ID:ATS2678 S/N:UNKNOWN DATE:04/2022 DUE:04/2023; FOUND TO BE OUT LIMITS DUE TO NO ALLOWABLE DAMAGE IN SRM; IT WILL BE REPAIRABLE BY REPLACEMENT I.A.W SRM 51-10-02-0G PAR 9C;[02] VERIFIED CORRECTIVE ACTION 1 COMPLETED AND VERIFIED OUT OF LIMITS;[03] REMOVED WEB AT BS 989 TO 1016 RBL 11 WL 208 PER SRM 51-10-02.-;[04] RECIVED NEW WEB ITEM 147A5744-14 LOT 1485868 LOCATED AND DRILLED NEW WEB AT RBL 37 BS 989 TO 1016 WL 208.1 ; IAW 737-700 SRM 51-40-05-0G-0 DWG 147A5730.- OK TO INSTALL.-;[05] VERIFIED CORRECTIVE ACTION STEP 4. VERIFIED OK TO INSTALL.;[06] INSTALLED NEW WEB AT AFT CABIN BS 986 TO BS 1016 RBL 37 IAW SRM 51-40-02-0G-0 ADN DWG 147A5730 REV:C; CARD IS COMPLETED;[07] UPDATED PART USED;[08] VERIFIED CORRECTIVE ACTION #6 AND MEASUREMENT FIELD;[09] VERIFIED CORRECTIVE ACTION #6 AND MEASUREMENT FIELD

---
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, except the copies of manufacturers’ service documents, which belong to their rights holders.