# SDR KNNA20080006

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 24, 2008
- Submitted: May 2, 2008
- Operation: Air carrier
- Aircraft: N464AT
- Make and model: Boeing 737-2L9
- Registry model: [Boeing 737-2L9](https://openairdocs.org/model/boeing-737-2l9) (OpenAirDocs)
- Aircraft serial: 21278
- Aircraft time: 49,851 hours, 43,385 cycles
- Engine: Pwa JT8D9A
- System (JASC): [5314 · Fuselage Main, Keel](https://openairdocs.org/jasc/5314)
- Part: Keelbeam
- Condition: Corroded
- Location: Zone 100
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/KNNA20080006

## Discrepancy

AFTER OPEN UP, FOUND CORROSION AT RT KEEL BEAM AT STA 727, AREA WENT OUT OF LIMITS AFTER CORROSION REMOVAL.  REPAIRED AREA IAW BOEING MESSAGE 1-522105282 AND IAW SKY KING ACO-0753105.

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