Historical aircraft types

REG	type	ICAO
N751SK	CRJ7	aa1f5a
N765SK	CRJ7	aa55b5
N763SK	CRJ7	aa4e47
N870DC	CRJ7	abf6a4
N748SK	CRJ7	aa11dc
N612QX	CRJ7	a7f7a0