# SDR EIAA20111109249

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 9, 2011
- Submitted: November 14, 2011
- Operation: Air carrier
- Aircraft: N482EV
- Make and model: Boeing 747 212B
- Registry model: [Boeing 747 212B](https://openairdocs.org/model/boeing-747-212b) (OpenAirDocs)
- Aircraft serial: 20713
- Aircraft time: 112,068 hours, 25,830 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: B-Nut
- Condition: Loose
- Location: Hyd Transmitter
- Stage of operation: AP
- 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/EIAA20111109249

## Discrepancy

DUE TO NR 4 HYD SYSTEM LEVEL LOW PERFORMED ALT GEAR EXTENSION WING OPEN.  FLUID LEVEL CAME UP SO GEAR WAS RECYCLED AND RE-EXTENDED NORMALLY WITHOUT FURTHER INCIDENT.  HYD FLUID REMAINED AT 4 GAL.  FOUND B-NUT ON NR 4 HYD TRANSMITTER LOOSE, REF PER CHAPTER 20 LEAK CHECKED GOOD. SERVICED NR 4 HYD QTY PER AMM 12-12-00 CHECKED GOOD.

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