Historical aircraft types

REG	type	ICAO
N503DZ	A21N	a64578
N534DT	A21N	a6bfa6
N547DE	A21N	a6f23d
N533DT	A21N	a6bbef
N508DA	A21N	a657f4
N546DN	A21N	a6ee8e
N509DT	A21N	a65bbc