# SDR UIEA2022031100199

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 10, 2022
- Submitted: March 14, 2022
- Operation: Air carrier
- Aircraft: [N475MC](https://openairdocs.org/aircraft/N475MC), registered now
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 29252
- Aircraft time: 91,224 hours, 17,182 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Metering Valve
- Condition: Loose
- Stage of operation: CL
- How discovered: V
- Nature of condition: J, K
- Precautionary procedure: A, J
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2022031100199

## Discrepancy

AFTER TAKEOFF HYD QTY LOW 1 EICAS(<P>INSPECTED AND FOUND NOSE STEERING METERING VALVE SUPPLY AND RETURN LINES LOOSE. RESECURED LINES. OPS CHECK LEAK CHECK GOOD PER AMM 20-11-18. SERVICED #1 HYD. SYSTEM PER AMM 12-12-01.</P>)

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