# SDR F3LA2018061400357

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 14, 2018
- Submitted: June 14, 2018
- Operation: Air carrier
- Aircraft: [N331FR](https://openairdocs.org/aircraft/N331FR), registered now
- Make and model: Airbus A320-251N
- Registry model: [Airbus A320-251N](https://openairdocs.org/model/airbus-a320-251n) (OpenAirDocs)
- Aircraft serial: 8239
- Aircraft time: 50 hours, 20 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: B-Nut
- Condition: Loose
- Location: Hydraulic Sys
- Stage of operation: CL
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/F3LA2018061400357

## Discrepancy

LOST HYDRAULIC SYSTEM GREEN QUANTITY JUST PRIOR TO REACHING CRUISE ALTITUDE AIR TURN BACK. 
FOUND LEFT ENGINE CASE DRAIN FILTER ASSEMBLY TOP LINE B-NUT LOOSE. TIGHTENED PER AMM 29-11-43-400-804-A. RAN CHECK OF GREEN 
HYDRAULIC SYSTEM IAW AMM 29-00-00-280-006-A01. OPERATIONAL CHECK NORMAL. RAN LEFT ENGINE. ALL PRESSURES NORMAL. NO LEAKS NOTED. 
SERVICED GREEN HYDRAULIC SYSTEM IAW AMM 12-12-29-611-001-A.

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