Historical aircraft types

REG	type	ICAO
N540DE	A21N	a6d83c
N534DT	A21N	a6bfa6
N533DT	A21N	a6bbef
N528DE		a6a6f6
N536DN	A21N	a6c70f
N509DT	A21N	a65bbc
N516DA	A21N	a67805