# SDR SWAA2021091312228

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 26, 2021
- Submitted: September 13, 2021
- Operation: Air carrier
- Aircraft: [N966WN](https://openairdocs.org/aircraft/N966WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 36966
- Aircraft time: 32,714 hours, 19,999 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Web
- Part number: 146A812325
- Condition: Corroded
- Location: Aft Cargo Thrshl
- 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/SWAA2021091312228

## Discrepancy

ACB DOOR SURROUND; SUB THRESHOLD WEB CORROSION. BS827+1; RBL27; WL153 ; / [01] REMOVED CORROSION ON AFT CARGO BAY SUB THRESHOLD WEB AT BS 827+1' RBL 27 WL 153 <BR>MEASURED L 1' X W 1' AND 0.003' DEEP. ORIGINAL THICKNESS .050'; REMAINING THICKNESS .047' <BR>FOUND TO BE IN LIMITS IAW SRM 53-60-15-1A-1 ALLOWABLE DAMAGE 1 - AFT CARGO DOOR SURROUND STRUCTURE <BR>TO BE REPAIRED BY REPLACEMENT DUE TO SURROUNDING CORROSION DAMAGE; ON CUSTOMER CARD TTG8Q006A439 <BR><BR>DEPTH GAUGE ATS 2473 S/N UNKNOWN 07/2022; [02] VERIFIED REMOVED CORROSION ON AFT CARGO BAY SUB THRESHOLD WEB AT BS 827+1' RBL 27 WL 153 <BR>MEASURED L 1' X W 1' AND 0.003' DEEP. ORIGINAL THICKNESS .050'; REMAINING THICKNESS .047' <BR>FOUND TO BE IN LIMITS IAW SRM 53-60-15-1A-1 ALLOWABLE DAMAGE 1 - AFT CARGO DOOR SURROUND STRUCTURE <BR>TO BE REPAIRED BY REPLACEMENT DUE TO SURROUNDING CORROSION DAMAGE; ON CUSTOMER CARD TTG8Q006A439.

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