# SDR TRBA2009086SUP1

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 13, 2009
- Submitted: October 9, 2009
- Operation: Air carrier
- Aircraft: N431AT
- Make and model: Aerosp ATR 72-212
- Registry model: [Aerosp ATR 72-212](https://openairdocs.org/model/aerospatiale-atr-72-212) (OpenAirDocs)
- Aircraft serial: 431
- Aircraft time: 26,404 hours, 28,967 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: B-Nut
- Condition: Loose
- Location: Hyd Line
- Stage of operation: CR
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/TRBA2009086SUP1

## Discrepancy

LOW LEVEL ON THE GREEN HYDRAULIC SYSTEM EN ROUTE.  EMERGENCY DECLARED.  FOUND EVIDENCE OF HYDRAULIC LEAK DURING POST FLIGHT INSPECTION.  FOUND HYDRAULIC SYSTEM LINE B-NUT LOOSE.  RE-TIGHTEN B-NUT IAW AMM NR 20-21-12 AND PRESSURIZATION CHECK PERFORMED IAW JIC NR 29-00-00-PAD-10010.  OPS CHK GOOD.

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