# SDR SWAA2021062479693

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 3, 2021
- Submitted: June 24, 2021
- Operation: Air carrier
- Aircraft: N781WN
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 30601
- Aircraft time: 70,552 hours, 41,684 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Cap
- Condition: Corroded
- Location: Bs 847-947
- 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/SWAA2021062479693

## Discrepancy

FOUND SEVERAL EXFOLIATION CORROSION SPOTS ON AFT CARGO CAP STRIPS FROM STA 847 THROUGH STA 947.5 ; / LOCATED AND DRILLED CAP STRIP PER B737-700 SRM 51-40-05-0G-0.;PERFORMED UT THICKNESS INSP ON REWORKED AREA IAW B737 NDT P4 51-00-00 PROC.3; MIN THK NOTED 0.038'<BR>TOOL USED MG27 BC:172139;REMOVED CORROSION FROM CAPSTRIPS FROM AFT CARGO FROM STA 847 THRU STA 947.5 RBL 21. AS PER B737-700 SRM 51-10-02-0G-0.;RECEIVED SERVICEABLE AFT CARGO CAP STRIP P/N 453A2611Y3; REF. TASK CARD TTG8Q004EYM2 FOR INSTALLATION.;VERIFIED STEP 1;VERIFIED STEPS 4 AND 5. TASK COMPLETE.

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