NTSB Identification: BFO85FID04.
The docket is stored on NTSB microfiche number 33099.
Accident occurred Saturday, August 24, 1985 in FARMVILLE, VA
Aircraft: CESSNA A188B, registration: N4830Q
Injuries: 1 Minor.
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 PILOT STATED THAT WHILE MAKING HIS THIRD SWATH RUN OVER A FIELD, THE ENGINE STARTED TO RUN ROUGH. HE STOPPED SPRAYING AND ATTEMPTED TO GAIN ALTITUDE, BUT THE ROUGHNESS INCREASED. SHORTLY THEREAFTER, THE MANIFOLD PRESSURE DROPPED AND HE WAS UNABLE TO KEEP THE AIRCRAFT FLYING. AS HE PREPARED TO DUMP THE CHEMICALS, THE AIRCRAFT CRASHED. IT WAS DESTROYED BY IMPACT WITH TREES & THE TERRAIN. AN EXAM REVEALED THERE WAS A CARBON RESIDUE ON THE DISTRIBUTOR OF THE LEFT MAGNETO AND EVIDENCE OF ARCING BETWEEN THE #5 AND #6 DISTRIBUTOR TERMINALS.
The National Transportation Safety Board determines the probable cause(s) of this accident to be:IGNITION SYSTEM,MAGNETO..ARCING
LOAD JETTISON..DELAYED..PILOT IN COMMAND
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