# SDR SWAA2022082538748

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 4, 2022
- Submitted: August 25, 2022
- Operation: Air carrier
- Aircraft: [N8656B](https://openairdocs.org/aircraft/N8656B), registered now
- Make and model: Boeing 737-8H4
- Registry model: [Boeing 737-8H4](https://openairdocs.org/model/boeing-737-8h4) (OpenAirDocs)
- Aircraft serial: 42530
- Aircraft time: 24,629 hours, 11,108 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- 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/SWAA2022082538748

## Discrepancy

CORROSION ON FWD CARGO BAY THRESHOLD AT RBL 28 BS 440+8; BS 440+14; BS 460+2; BS 460+4; BS 460+9; BS 460+11; BS 460+18; BS 480+2; BS 480+4. / [01] REMOVED CORROSION FROM FCD THRESHOLD WEB AT BS 440+8 MEASURED 1.8'W X 1.8'L AND 0.004' DEEP; ORIGINAL THICKNESS OF 0.045'. FOUND TO BE IN LIMITS PER SRM 53-30-15-1A-1REMOVED CORROSION FROM FCD THRESHOLD WEB AT BS 440+14 MEASURED 1.6'W X 22.6'L AND 0.0075' DEEP; ORIGINAL THICKNESS OF 0.045'. FOUND TO BE OUT OF LIMITS PER SRM 53-30-15-1A-1<BR><BR>REMOVED CORROSION FROM FCD THRESHOLD WEB AT BS 460+2 MEASURED 1.6'W X 22.6'L AND 0.008' DEEP; ORIGINAL THICKNESS OF 0.045'. FOUND TO BE OUT OF LIMITS PER SRM 53-30-15-1A-1 REMOVED CORROSION FROM FCD THRESHOLD WEB AT BS 460+4 FOUND TO BE IN LIMITS PER SRM 53-30-15-1A-1<BR><BR>REMOVED CORROSION FROM FCD THRESHOLD WEB AT BS 460+9 MEASURED 1.6'W X 22.6'L AND 0.009' DEEP; ORIGINAL THICKNESS OF 0.045'. FOUND TO BE OUT OF LIMITS PER SRM 53-30-15-1A-1<BR><BR>REMOVED CORROSION FROM FCD THRESHOLD WEB AT BS 460+11 MEASURED 1.6'W X 22.6'L AND 0.0035' DEEP; ORIGINAL THICKNESS OF 0.045'. FOUND TO BE IN LIMITS PER SRM 53-30-15-1A-1<BR><BR>REMOVED CORROSION FROM FCD THRESHOLD WEB AT BS 460+18 MEASURED 0.9'W X 1.4'L AND 0.015' DEEP; ORIGINAL THICKNESS OF 0.045'. FOUND TO BE OUT OF LIMITS LIMITS PER SRM 53-30-15-1A-1[08] INSTALLED NEW THRESHOLD WEB BTW B/S 440 TO B/S 492.4 IAW SRM 51-40-02 AND DWG 143A8330 REV:A;[09] VERIFIED ITEM 8 CORRECTIVE ACTIONS.;[10] VERIFIED MEASUREMENTS.

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