# SDR SWAA2021062882256

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 10, 2021
- Submitted: June 28, 2021
- Operation: Air carrier
- Aircraft: [N298WN](https://openairdocs.org/aircraft/N298WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32543
- Aircraft time: 45,656 hours, 26,955 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Channel
- Condition: Corroded
- Location: Bs 727e-767 S25r
- 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/SWAA2021062882256

## Discrepancy

CORROSION ** AFT CARGO BILGE FLOOR SUPPORT Z CHANNEL @ S-25R FROM STA 727E TO 767 ; / [01] REMOVED CORROSION AT AFT CARGO BILGE FLOOR SUPPORT Z CHANNEL @ - 25R FROM STA 727E TO 767; [02] CERTIFIED REMOVAL CORROSION; [03] VERIFIED CORROSION REMOVAL; [04] PERFORMED UT THICKNESS INSP ON AFT CARGO REWORKED AREA IAW B737 NDT P4 51-00-00 PROC.3 ; MIN THICKNESS NOTED 0.031'<BR>TOOL USED : OLYMPUS 27MG BC:172139; [05] THE AFT CARGO BILGE FLOOR SUPPORT 'Z' CHANNEL @ S-25 FROM STA 727E TO 767 HAS BEEN REPLACED ON W/O 2017439; 1000/0081; B/C TTG8Q005E7WF.; [06] VERIFIED STEP 5; [07] RII INSPECTED

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