# SDR 95ZZZX1920

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 30, 1995
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N900DH
- Make and model: Gulstm G1159
- Aircraft serial: 111
- System (JASC): [2434 · DC Generator-Alternator](https://openairdocs.org/jasc/2434)
- Part: Brush
- Condition: Worn
- Location: Dc Generator
- Component: Bendix, 30E20111B
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/95ZZZX1920

## Discrepancy

BLACK STREAKS WERE NOTICED ON THE ENGINE COWLING BY MAINTENANCE PERSONNEL.  FOUND THE DC GENERATOR TO HAVE PREMATURE BRUSH WEAR, WORN BEYOND LIMITS (NO WEAR MARK REMAINING - 100 PERCENT WORN).  RECENT OVERHAUL BY REPAIR STATION, CAUSE OF WEAR NOT DETERMINED.  BRUSH PART NUMBER NOT DETERMINED.  SUSPECT DEFECTIVE BRUSH MATERIAL COMPOSITION OR IMPROPER INSTALLATION/MAINTENANCE OVERHAUL PROCEDURE.

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