This flight is a mystery so far. The track can be found here:
https://www.flightradar24.com/data/a...-irsg#2deeb6e6
It is not publicly known why the aircraft turned West into the Atlantic after crossing the border of Costa Rica. The groundspeed was rather ragged in the last 30 minutes. Finally it turned South towards Limon and crashed shortly therafter. Limon has a VOR/DME Approach for Runway 32, but that begins overhead (LIO) so it can be reached following the coast. No apparent reason to turn out so far into the Atlantic ocean unless advised so by ATC. In case of troubles there were other airports reachable and they surely would have remained near terra firma in such a case. Sunset was around 17:15 local and the time of crash was 23:54 UTC, which is 6 hours ahead (local 17:54), so it was probably getting dark by then. Weather at Limon was reported CAVOK.