# SDR SWAA2022101749299
- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 29, 2022
- Submitted: October 17, 2022
- Operation: Air carrier
- Aircraft: [N266WN](https://openairdocs.org/aircraft/N266WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32523
- Aircraft time: 52,718 hours, 31,500 cycles
- System (JASC): [5320 ยท Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Support
- Condition: Corroded
- Location: Aft 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/SWAA2022101749299
## Discrepancy
AFT CARGO BAY FLOOR TO SIDEWALL SUPPORT HAS CORROSION AT STA 727D +5;+8;+14;+16 TO 727E; LBL 23 TO 25;WL 157. / [01] ENTERED MEASUREMENTS;[02] B737-700 SRM 53-00-53-1A-2 IS APPLICABLE FOR THIS EVALUATION.
REMOVED CORROSION DAMAGE IAW SRM 51-10-02-0G-0.
AREAS OF CORROSION:
BS 727D+5' - 0.60'L X 0.60'W X 0.005'D
BS 727D+8' - 1.20'L X 0.80'W X 0.009'D
BS 727D+14' - 1.20L' X 0.60'W X 0.008'D
BS 727D+16' - 0.80L' X 0.60'W X 0.008'D
BS 727E 0.90'L X 0.90'W X 0.009'D
ORIGINAL MATERIAL THICKNESS: 0.040'.
REMOVED 0.009' OF MATERIAL.
REMAINING MATERIAL: 0.031'
MATERIAL LOSS IS MORE THAN 10%.
CORROSION DAMAGE FOUND TO BE OUT OF ALLOWABLE DAMAGE LIMITS IAW SRM 53-60-15-1A-1.
REPAIR BY REPLACEMENT IAW SRM SRM 51-10-02-0G-0.
DIAL DEPTH GAGE:
ATS401; S/N UNKNOWN; CAL DUE 10/2022.;[03] VERIFIED CORRECTIVE ACTION #2;[04] WORK WILL BE ACCOMPLISH ON TTG8Q00F3P17;[05] UPDATED TO LEVEL2;[06] UPDATED MEASUREMENTS;[07] VERIFIED REPLACEMENT TASK COMPLETE
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