# SDR SWAA2022031506809

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 3, 2019
- Submitted: March 16, 2022
- Operation: Air carrier
- Aircraft: [N7826B](https://openairdocs.org/aircraft/N7826B), registered now
- Make and model: Boeing 737-79P
- Registry model: [Boeing 737-79P](https://openairdocs.org/model/boeing-737-79p) (OpenAirDocs)
- Aircraft serial: 30035
- Aircraft time: 46,816 hours, 31,681 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Intercostal
- Condition: Corroded
- Location: Aft Cargo Bay
- 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/SWAA2022031506809

## Discrepancy

AFT CARGO PIT BILGE INTERCOSTAL STA 807-827 RBL 6 WL 155 HAS CORROSION ON INBOARD AND OUTBOARD SIDES EMITTING FROM KEEL CHORD STR 27R / EVALUATED CORROSION DAMAGE ON AFT CARGO BILGE INTERCOSTAL STA 807 - 827 RBL 6 FOUND OUT OF LIMITS W/ 100% MATERIAL LOSS IAW B737 SRM 53-00-04-1A-1. REMOVED & REPLACED INTERCOSTAL W/ NEW FABRICATED INTERCOSTAL P/N 146A8132-18 IAW BOEING DWG 146A8132 REV B & A & 146A8130 REV B.

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