Aug 1, 1990
Accident
Substantial FREDERICK, MD
Injuries2 minor
Phase of Flight-
ConditionsVMC
OperationFAR 091
Probable Cause
FAILURE OF THE PILOT TO ASSURE THAT THE MAGNETO (IGNITION) SWITCH WAS IN THE PROPER POSITION. A FACTOR RELATED TO THE ACCIDENT WAS: PARTIAL FAILURE OF THE MAGNETO SWITCH, WHICH ALLOWED THE KEY TO BE REMOVED, THOUGH THE SWITCH WAS NOT IN THE 'OFF' POSITION.
NTSB BFO90DIG02