# SDR 2020FA0000427

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 29, 2020
- Submitted: September 29, 2020
- Operation: General aviation
- Aircraft: [N460EM](https://openairdocs.org/aircraft/N460EM), registered now
- Make and model: Beech C90A
- Registry model: [Beech C90A](https://openairdocs.org/model/beech-c90a) (OpenAirDocs)
- Aircraft serial: LJ1593
- Aircraft time: 4,700 hours, 6,005 cycles
- Engine: Pwa PT6A21
- Engine time: 4,700 hours, 6,005 cycles
- System (JASC): [3420 · Attitude and Direction Data System](https://openairdocs.org/jasc/3420)
- Part: Dpu
- Part number: 6229682004
- Part serial: 1458
- Condition: Faulted
- Location: Zone 100
- Part time: 1,700 hours, 1,795 cycles
- Stage of operation: AA
- How discovered: O
- Nature of condition: I
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2020FA0000427

## Discrepancy

AIRCRAFT ENROUTE TO PICK-UP PASSENGER RECEIVED "DPU FAIL" IN BOTH EADI/EHSI DISPLAY.  PILOT DIVERTED TO KVJI AS PRECAUTION ACTION.  AIRCRAFT LANDED WITHOUT ANY ISSUES.  BASE MECHANIC REMOVED AND REPLACED COLLINS DPU-84 UNIT TO REPAIR THE ISSUE.

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