Historical aircraft types

REG	type	ICAO
N509DT	A21N	a65bbc
N533DT	A21N	a6bbef
N518DQ	A21N	a67f81
N532DN	A21N	a6b833
N550DN	A21N	a6ffc3
N585DN	A21N	a788d3
N506DA	A21N	a65086