Historical aircraft types

REG	type	ICAO
N752EV	CRJ7	aa21ef
N726SK	CRJ7	a9bb70
N722EV	CRJ7	a9ab72
N765SK	CRJ7	aa55b5
N742SK	CRJ7	a9fb92
N604SK	CRJ7	a7d7b5