Table 2. Words and bigrams of the 12 topics extracted with LDA from CEANITA reports, together with the representative label associated to each topic by FARO’s experts (English translation from Spanish).

Words/Bigrams							Topic
helicopter	drop	water	fires	extinguishing	coordination	drop area	fire
load	work	high	alone	workload	instructions	previous	workload
departure	to take off	aircraft climb	runway	to take off aircraft	rate	they are	departure
wind	tail	down-wind	leg	wind leg	right tail	runway	traffic circuit
weather	adverse	adverse weather	detours	meteorologic conditions	due to weather	thunderstorm	weather
runway	go around	go	around	to take off	to land	aircraft established	go around
sectors	sector aircraft	frequency sector	high	coordination	transfer	limit	sector operations
answer	received	finally	decided	they saw	communication	visual contact	communication
clearance	course descent	aircraft to descend	descent rate	sector to descend	aircraft to maintain	rate	descent
received	coordinating	confirming	to confirm receipt	maintaining formation	sector informs	receipt	coordination
alert	early	early alert	activation function	activation	function	alert function	alert
military	military formation	formation	military aircraft	defence	air defence	main centre	military