# SDR 2005FA0000698

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 1, 2004
- Submitted: May 12, 2005
- Operation: General aviation
- Aircraft: N10RM
- Make and model: Cessna 425
- Registry model: [Cessna 425](https://openairdocs.org/model/cessna-425) (OpenAirDocs)
- Aircraft serial: 4250074
- Engine: Pwa PT6A60A
- System (JASC): [3340 · Exterior Lighting](https://openairdocs.org/jasc/3340)
- Part: Key
- Part number: MS357561
- Condition: Missing
- Location: Landing Light
- Component: Landing Light, Grimes
- Component part number: 4501489
- 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/2005FA0000698

## Discrepancy

THE RT WING RETRACTABLE LANDING LIGHT WAS FAILED, REMOVED, SENT OUT FOR O/H.  RETURNED FROM O/H, INSTALLED 8/6/04 AND OPS CHECKED OK.  UNIT FAILED 11/1/04 AND WAS REMOVED.  UNITS MOTOR WORM GEAR WAS ACCESSED, REMOVED AND THE MECHANIC DETECTED NO WOODRUFF KEY WAS INSTALLED AND ONLY SET SCREWS WERE DRIVING THE GEAR STRIPPING THE PARTS.  A NEW WORM GEAR AND WOODRUFF KEY  FURNISHED BY THE O/H AGENCY WERE DELIVERED, AND INSTALLED IAW STANDARD PRACTICES.  RECOMMEND CLOSER INSPECTION.

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