4 occurrences in the ASN safety database,
showing occurrence 1 - 4

date	type	registration	operator	fat.	location		pic	cat
22-AUG-1968	Convair CV-600	N278E	East Coast Leasing	0	Martinsburg ...			O1
30-MAY-1969	Convair CV-600		Texas International	0				H2
27-SEP-1973	Convair CV-600	N94230	Texas International	11	Black Fork M...			A1
04-AUG-1989	Convair CV-600	N94253	International Turbine Service	0	Augusta Airp...			A1