Historical aircraft types

REG	type	ICAO
N23721	B737	a22539
N27511	B39M	a2bba4
N21723	B737	a1d63d
N37522	B39M	a44917
N39728	B737	a49f89
N17583	B39M	a12f4c
N36207	B738	a41632
N37577	B39M	a449cb
N17557	B39M	a12ee7
N29717	B737	a31216
N37542		a4495d
N17753	B737	a13651
N77572	B39M	aa7f02