# SDR CA040203008

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 22, 2004
- Submitted: July 22, 2004
- Operation: General aviation
- Make and model: Cessna 421B
- Registry model: [Cessna 421B](https://openairdocs.org/model/cessna-421b) (OpenAirDocs)
- Aircraft time: 4,825 hours
- Engine: Cont GTSIO520H
- Propeller: Mcauly 3AF34C92
- System (JASC): [5210 · Passenger/Crew Doors](https://openairdocs.org/jasc/5210)
- Part: Bolt
- Condition: Wrong Part
- Location: Pax Door
- Stage of operation: NR
- How discovered: 9
- Nature of condition: W
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA040203008

## Discrepancy

(CAN) BOLTS, BUSHINGS SEIZED ON MAIN DOOR TOP HALF.  INCORRECT HARDWARE STACK-UP, IE INTERNAL WRENCHING BOLT HAD PLAIN WASHER UNDER RADIUS OF HEAD. SEVERAL AIRCRAFT HAVE HAD THESE SAME PROBLEM OF SEIZED/CORRODED PARTS. CAUSED BY LACK OF LUBRICATION.  MAIN DOOR BOLTS/BUSHING P/N MS20004-505111515-10

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