# SDR 9WGA5462018032602

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 26, 2018
- Submitted: March 28, 2018
- Operation: Air carrier
- Aircraft: [N546JN](https://openairdocs.org/aircraft/N546JN), registered now
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- Aircraft serial: 48546
- Aircraft time: 78,436 hours, 13,879 cycles
- System (JASC): [2933 · Hydraulic Quantity Indicator](https://openairdocs.org/jasc/2933)
- Part: Transmitter
- Part number: ST12S
- Condition: Intermittent
- Location: Hyd Qty
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/9WGA5462018032602

## Discrepancy

DURING CRUISE, OBSERVED HYDRAULIC SYSTEM 1 REDUCTION IN QUANTITY .1 GALLON IN 6 MINUTES AND INCREASED TO .1 GALLON IN 4 MINUTES.  RETURNED TO DEPARTURE.  REMOVED AND REPLACED THE HYDRAULIC SYSTEM 1 QUANTITY TRANSMITTER IAW AMM 29-32-02. HYDRAULIC INDICATION SYSTEM CHECKED SATISFACTORY.

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