Historical aircraft types

REG	type	ICAO
PR-YRC	A20N	e492a5
PR-YRZ	A20N	e494b4
PR-YYA	A20N	e494f7
PR-YRW	A20N	e4948c
PR-YRT	A20N	e49445
PR-YYH	A20N	e4932b
PR-YYG	A20N	e4932a