# SDR CALA2016080300494

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 3, 2016
- Submitted: August 3, 2016
- Operation: Air carrier
- Aircraft: [N665U](https://openairdocs.org/aircraft/N665U), registered now
- Make and model: Boeing 767322
- Aircraft serial: 29237
- Aircraft time: 64,943 hours, 15,629 cycles
- System (JASC): [2913 · Hydraulic Pump (Electric/Engine), Main](https://openairdocs.org/jasc/2913)
- Part: Indicator
- Condition: Leaking
- Location: Nr 1 Hyd Pump
- Stage of operation: CR
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2016080300494

## Discrepancy

HYDRAULIC LEAK. LEFT QUANTITY WAS .46. OCCURRED AT FL 330.  RETURNED TO  DEPARTURE.  FOUND DIFFERENTIAL PRESSURE INDICATOR TO BE LEAKING ON NR 1 ENGINE DRIVEN PUMP PRESSURE CASE DRAIN FILTER MODULE, REMOVED AND REPLACED THE DIFFERENTIAL PRESSURE INDICATOR.  OPS AND LEAK CHECKED OK.

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