# SDR HNAA0200051

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 7, 2002
- Submitted: August 9, 2002
- Operation: Air carrier
- Aircraft: [N985HA](https://openairdocs.org/aircraft/N985HA), registered now
- Make and model: Dhav DHC8201
- Aircraft serial: 479
- Aircraft time: 7,990 hours, 8,934 cycles
- System (JASC): [2920 · Hydraulic System, Auxiliary](https://openairdocs.org/jasc/2920)
- Part: Contactor
- Part number: HCA1N022
- Condition: Intermittent
- Part time: 7,990 hours, 8,934 cycles
- Stage of operation: TX
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HNAA0200051

## Discrepancy

WHEN #1 ENGINE WAS SHUTDOWN FOR SINGLE ENGINE TAXI THE #1 HYDRAULIC MAIN AND STANDBY SYSTEMS PRESSURE WENT TO ZERO. CREW HAD TO USE PARKING BRAKE TO STOP A/C. REPLACED CONTACTOR 2421-K2.

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