# SDR 97ZZZX1789

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 1, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N87SK](https://openairdocs.org/aircraft/N87SK), registered now
- Make and model: Beech 1900D
- Registry model: [Beech 1900D](https://openairdocs.org/model/beech-1900d) (OpenAirDocs)
- Aircraft serial: UE87
- System (JASC): [3420 · Attitude and Direction Data System](https://openairdocs.org/jasc/3420)
- Part: Comp Contl Unit
- Part number: 6226135014
- Condition: Inoperative
- Location: Instrument Panel
- Part time: 5,066 hours
- Component: CCU65
- 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/97ZZZX1789

## Discrepancy

DURING THE MONTH OF NOVEMBER, THERE WERE SEVEN CCU-65 COMPENSATION CONTROL UNITS, P/N 622-6135-014, REMOVED DUE TO PART OR ALL OF  BACKLIGHTING BEING INOPERATIVE.  THE PARTS TIME SINCE OVERHAUL WERE 6,805.5 HRS FROM N NR  118SK; 6,526.6 HRS FROM N NR  831SK; 6,825.1 HRS FROM N NR  801SK; 5,065.7 HRS FROM N NR 87SK; AND 5,947.8 HRS FROM N NR  91SK.  WHEN SENT OUT FOR REPAIR, LAMPS WERE REPLACED AND THE UNITS  RETURNED TO SERVICE.  THIS GIVES MTBUR OF 6,234.0 HRS.  REF:  OPERATOR CONTROL NRS S2YA960043, AND 97ZZZX1787, 7ZZZX1788, 97ZZZX1790.

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