# SDR 2011FA0000331

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 2, 2011
- Submitted: June 2, 2011
- Operation: General aviation
- Aircraft: N899AE
- Make and model: Beech 99
- Registry model: [Beech 99](https://openairdocs.org/model/beech-99) (OpenAirDocs)
- Aircraft serial: U23
- Aircraft time: 48,953 hours, 66,805 cycles
- Engine: Pwa PT6A27
- System (JASC): [5743 · Wing, Landing Gear Attach Fittings](https://openairdocs.org/jasc/5743)
- Part: Bearing
- Part number: B543
- Condition: Broken
- Location: Lt Mlg Support
- Component: Support, Beech
- Component part number: 115811046
- Stage of operation: LD
- How discovered: O
- Nature of condition: G
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2011FA0000331

## Discrepancy

DURING LANDING GEAR EXTENSION, THE LT MAIN FAILED TO EXTEND.  POST ACCIDENT INVESTIGATION REVEALED THAT THE LT GEAR ACTUATOR, PN 99-810057-653 HAD FAILED AND THE DRIVE END CASTING BROKE OFF. THE ACTUATOR INBD SUPPORT BEARING WAS BROKEN (PN B543)  THE ACTUATOR WAS REPLACED 377.5 HOURS BEFORE FAILURE.

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