# SDR SWAA2022032525944

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 27, 2019
- Submitted: May 16, 2022
- Operation: Air carrier
- Aircraft: [N7881A](https://openairdocs.org/aircraft/N7881A), registered now
- Make and model: Boeing 737-7CT
- Registry model: [Boeing 737-7CT](https://openairdocs.org/model/boeing-737-7ct) (OpenAirDocs)
- Aircraft serial: 35084
- Aircraft time: 39,637 hours, 19,917 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Intercostal
- Part number: 146A75052
- Condition: Corroded
- Location: Aft Cargo Compt
- 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/SWAA2022032525944

## Discrepancy

AFT CARGO COMPARTMENT STA 747-767 RBL 22 WL 158; INTERCOSTAL IS CORRODED ON UPPER FLANGE AT NUTPLATES. / REMOVED AND EVALUATED CORROSION ON INTERCOSTAL STA 747-767 RBL 22. ORIGINAL THICKNESS .030' LOSS OF .010' WITH .020' REMAINING BLENDS FOUND TO BE OUT OF LIMITS PER SRM 53-00-53-1A-2. REMOVED AND REPLACED INTERCOSTAL PART # 146A7505-2 PER SRM 51-40-02-0G-0 AND DWG 146A7502 REV- REMOVEABLE COMPONENT P/N 146A7505-2

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