Historical aircraft types

REG	type	ICAO
N23721	B737	a22539
N820UA	A319	ab329e
N21723	B737	a1d63d
N39728	B737	a49f89
N838UA	A319	ab77d5
N36207	B738	a41632
N826UA	A319	ab48e8
N24736	B737	a24ce0
N29717	B737	a31216
N845UA	A319	ab942f
N17753	B737	a13651
N854UA	A319	abb7f7