# SDR DLL10971068

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 2, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N720DA
- Make and model: Lkheed 10113851
- Aircraft serial: 193C1136
- Engine: Pwa PW4060
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Control Valve
- Part number: 1516207122
- Condition: Cracked
- Location: Lt Mlg
- Stage of operation: DE
- Nature of condition: K, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DLL10971068

## Discrepancy

UPON LOWERING GEAR HANDLE LOST C-SYSTEM PRESSURE AND FLUID TO BELOW HALF.  APPLIED BRAKES AT 120 KNOTS.  REPLACED CRACKED C-SYSTEM LEFT MAIN PHASE CONTROL VALVE.  CHECKED PUMP FILTERS, SYSTEM OPS CHECK GOOD.

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