# SDR SWAA2022032168774

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 4, 2022
- Submitted: March 21, 2022
- Operation: Air carrier
- Aircraft: [N216WR](https://openairdocs.org/aircraft/N216WR), registered now
- Make and model: Boeing 737*
- Aircraft serial: 32488
- Aircraft time: 52,760 hours, 31,347 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Web
- Condition: Corroded
- Location: Fwd Cargo
- Stage of operation: UK
- 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/SWAA2022032168774

## Discrepancy

CORROSION ON FCB DOOR CUT-OUT SUB-THRESHOLD WEB FROM STA 460 TO STA 480+4; RBL 28; WL 156. / [01] REMOVED CORROSION ON FCB DOOR CUT-OUT SUB-THRESHOLD WEB AT AREA 1 BS460 RBL 28 L=1' X W=1' D= 0.009' REMAINING THICKNESS = 0.036 FROM ORIGINAL THICKNESS= 0.45'. AREA 2 BS480+4 RBL28 L=0.5' W=0.5' D= 0.006 REMAINING THICKNESS =0.039 BOTH FOUND TO BE OUT OF LIMITS IAW SRM 53-30-15-0I-1 AND SRM 53-30-15-1A-1<BR>TOOL USED<BR>DIAL DEPTH GAUGE<BR>ID:ATS2473<BR>S/N: UNKNOWN;[02] UPDATED MEASUREMENTS;[03] UPDATED MEASUREMENTS;[04] VERIFIED CORRECTIVE ACTION 1; OUT OF LIMITS;[05] RECEIVED NEW WEB FROM STORES; PO 852090;PN 143A8122-10<BR>LOCATED AND DRILLED IAW SRM 51-40-05 AND DWG 143A8330.<BR>INSTALLED NUTPLATES IAW SRM 51-40-02.<BR>COUNTERSINKING OF FASTENER HOLES ACCOMPLISHED IAW SRM 51-40-08.;[06] UPDATED MEASUREMENTS;[07] UPDATED MEASUREMENTS;[08] VERIFIED APPLICABLY OF SRM 53-30-15-1A-1;[09] VERIFIED CORRECTIVE ACTION #5; 8

---
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.