# SDR CA010503004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 10, 2001
- Submitted: May 11, 2001
- Operation: Air carrier
- Make and model: Dhav DHC8311
- Aircraft time: 22,703 hours
- Engine: Pwa PW123
- Propeller: Hamstd 14SF15
- System (JASC): [2920 · Hydraulic System, Auxiliary](https://openairdocs.org/jasc/2920)
- Part: Power Unit
- Part number: 849557
- Condition: Failed
- Location: Hyd System
- Part time: 152 hours, 301 cycles
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA010503004

## Discrepancy

(CAN) THE FLIGHT CREW RETURNED TO THE GATE AFTER EXPERIENCING A NR 1 HYD HOT CAUTION LIGHT DURING TAXI FOR TAKEOFF. MAINTENANCE REPLACED THE NR 1 SYSTEM STANDBY POWEER UNIT AND THE AIRCRAFT RETURNED TO SERVICE. THIS UNIT HAD RECENTLY BEEN REPAIRED BY THE VENDOR. TTSN, TCSN WERE NOT READILY AVAILABLE DUE TO THIS UNIT BEING A LOANER.

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