Historical aircraft types

REG	type	ICAO
N7820L	B737	aa9a57
N7731A	B737	aa76a8
N7737E	B737	aa777e
N565WN	B737	a73b7e
N237WN	B737	a22482
N907WN	B737	ac8b2e
N7744A	B737	aa7ac8