Most common Callsign

Below are the Top 10 most common ident/callsigns of all airlines.

	Callsign	Airline	# of times
1	AAL134	American Airlines	68
2	AAL73	American Airlines	67
3	AAL10	American Airlines	63
4	AAL1011	American Airlines	57
5	AAL1136	American Airlines	54
6	AAL1668	American Airlines	53
7	AAL1022	American Airlines	53
8	AAL313B	American Airlines	48
9	AAL1012	American Airlines	47
10	AAL1577	American Airlines	47