# SDR SWAA2021072933140

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 30, 2020
- Submitted: July 29, 2021
- Operation: Air carrier
- Aircraft: [N8607M](https://openairdocs.org/aircraft/N8607M), registered now
- Make and model: Boeing 737-8H4
- Registry model: [Boeing 737-8H4](https://openairdocs.org/model/boeing-737-8h4) (OpenAirDocs)
- Aircraft serial: 36634
- Aircraft time: 27,943 hours, 12,177 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Web
- Condition: Corroded
- Location: Fwd 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/SWAA2021072933140

## Discrepancy

C-1 PIT DOOR OPENING THRESHOLD PLATE; AREAS OF CORROSION ON UPPER SIDE OF PLATE; BS440 TO BS480+6; RBL 30; WL 156; AREAS MARKED IN BLACK / REMOVED CORROSION FROM FWD CARGO BAY DOOR THRESHOLD PLATE WEB IAW SRM 51-10-02-0G-0 AND INSPECTED W/ 10X MAG GLASS. VERIFIED MATERIAL LOSS: ORIGINAL T= .036 LOSS = .009' LIMIT = .004' THRESHOLD WEB IS FOUND TO BE OUT OF LIMITS IAW SRM 53-30-15-1A-1 FIG 103 DET D. REMOVED AND REPLACED WEB IAW SRM 51-40-02-0G-0 AND DWG 143A8330 REV:- APPLIED CIC TO LOWER AND UPPER SURFACES OF WEB IAW AMM 51-21-91-620-802 MPM: 654A0003-58 A-TAG: WN7080

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