# SDR V0DR2011007

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 8, 2011
- Submitted: April 8, 2011
- Operation: Air carrier
- Aircraft: [N170GL](https://openairdocs.org/aircraft/N170GL), registered now
- Make and model: Beech 1900D
- Registry model: [Beech 1900D](https://openairdocs.org/model/beech-1900d) (OpenAirDocs)
- Aircraft serial: UE170
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Bearing
- Part number: M4000AC3
- Condition: Seized
- Location: Vent Blower
- Part time: 924 hours
- Component: Vent Blower, EM630
- Component part number: 11438002811
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/V0DR2011007

## Discrepancy

DURING SCHEDULED BRUSH, CHANGE THE REPAIR THE TECH NOTED NOISE FROM THE BEARINGS.  INSP REVEALED THE ARMATURE, 1 OF THE (COMMUTATOR END) BEARINGS HAD FAILED.  A VISUAL INSP OF THE BEARING REVEALED THE GREASE HAD SEEPED PAST THE SEALED AREA AND THE BEARING WOULD NOT SPIN FREELY BY HAND.  BOTH BEARINGS WERE R & R NO OTHER DISCREPANCIES NOTED.

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