Historical aircraft types

REG	type	ICAO
N17753	B737	a13651
N21723	B737	a1d63d
N491UA	A320	a61592
N28457	B739	a2dffe
N17719	B737	a135cb
N454UA	A320	a582bb
N17349	B38M	a12758
N873UA	A319	ac033e
N442UA	A320	a553ce
N894UA	A319	ac55f3
N477UA	A320	a5dcde
N27733	B737	a2c35a
N23707	B737	a224f9
N470UA	A320	a5c2dd