NTSB Identification: MIA85LA042.
The docket is stored on NTSB microfiche number 26916.
Accident occurred Wednesday, November 21, 1984 in JACKSONVILLE, FL
Aircraft: Rockwell 690A, registration: N44WV
Injuries: 2 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

CLIMBING THROUGH 10,000 FT THE PLT NOTICED A RED GEAR LIGHT AND DROPPING HYD PRESSURE. PRIOR TO THE PRECAUTIONARY LANDING, ACCORDING TO THE PLT, THE GEAR WERE EXTENDED AND INDICATED DOWN AND LOCKED. WHEN REVERSE THRUST WAS APPLIED THE LEFT MAIN GEAR COLLAPSED. EXAM REVEALED A LEAKING LEFT HYD PUMP SHAFT SEAL WHICH RESULTED IN THE OVERBOARD VENTING OF HYD FLUID. THE LEFT MAIN GEAR ACTUATOR CLEVIS WAS BROKEN. METALLURGICAL EXAM INDICATED THAT IT FAILED UNDER OVERLOAD STRESS. OTHER THAN THE LEAKING SEAL NO HYD MECHANICAL MALFUNCTIONS WERE DISCOVERED.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

HYDRAULIC SYSTEM,SEAL..LEAK

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

LANDING GEAR,GEAR LOCKING MECHANISM..FAILURE,TOTAL

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

FLUID,HYDRAULIC..LEAK

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

HYDRAULIC SYSTEM..FAILURE,TOTAL




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