NTSB Identification: NYC85FFJ01.
The docket is stored on NTSB microfiche number 29333.
Accident occurred Saturday, November 03, 1984 in ENDICOTT, NY
Aircraft: STEVENS MONNETT-MONI, registration: N234NS
Injuries: 1 Serious.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

THE ACFT COLLIDED WITH THE TERRAIN IN AN UNCONTROLLED DESCENT FOLLOWING A PARTIAL LOSS OF POWER DURING A TAKEOFF CLIMB. THE PLT STATED THE RPM DROPPED FROM 5200 TO 4600 AT WHICH TIME HE ATTEMPTED TO LEAN THE MIXTURE. A SEVERE VIBRATION DEVELOPED AND NOT WANTING TO FLY OVER A RESIDENTIAL AREA, THE PLT INITIATED A LEFT BANK TOWARD THE ARPT. THE ACFT STALLED AND ENTERED A SPIN IMPACTING THE GROUND BEFORE RECOVERY ATTEMPTS WERE EFFECTIVE. CAUSE OF THE POWER LOSS WAS NOT DETERMINED.

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

REASON FOR OCCURRENCE UNDETERMINED

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

AIRSPEED..NOT MAINTAINED..PILOT IN COMMAND



Contributing Factors

REMEDIAL ACTION..NOT POSSIBLE..PILOT IN COMMAND

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