# SDR CA990927038

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 16, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Make and model: Dhav DHC8301
- Engine: Pwa PW123
- Propeller: Hamstd 14SF15
- System (JASC): [3250 · Landing Gear Steering System](https://openairdocs.org/jasc/3250)
- Part: Manifold
- Part number: 86005
- Condition: Leaking
- Location: Nlg Steering Sys
- Part time: 23,355 hours
- Component: Dowty, 83220001001
- Stage of operation: CR
- Nature of condition: K, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA990927038

## Discrepancy

(CAN) DURING CRUISE FLIGHT, THE CREW GOT A HYDRAULICS ISOLATION VALVE CAUTION LIGHT.  THE NR 2 HYDRAULIC SYSTEM SHOWED A QUANTITY OF ONLY 1 QUART OF FLUID REMAINING.  THE AIRCRAFT RETURNED TO THE POINT OF DEPARTURE AND MADE A SAFE LANDING AFTER MAKING AN ALTERNATE LANDING GEAR EXTENSION.  MAINTENANCE DETERMINED THAT 2 BOLTS HAD SHEARED AT THE STEERING MANIFOLD PRESSURE INLET, CAUSING THE COVER TO BECOME DISPLACED, WHICH ALLOWED THE LOSS OF ALL THE NR 2 HYDRAULIC SYSTEM FLUID.

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