AdjudiCor
The AdjudiCor LA-240 is a 1946 propeller fighter flown by Yara's air force. The base model has no usable weapons, so it is a transport plane for you, not a dogfighter.
It is quick and nimble, so it gets you across Yara fast. With no guns, though, it is no use against ground targets or other aircraft.
Steal one from an airfield or airstrip and fly it to a pickup point that takes planes. Clear nearby anti-aircraft sites first, since they will shoot you down.
The game calls it a World War II relic even though its model year is 1946, after the war ended. If you want a plane that can fight, pick an armed variant like the CE or the NPLM.
AdjudiCor LA-240 CE
The LA-240 CE is an armed AdjudiCor fighter that was pressed into service during the 1967 revolution. It carries machine guns, rockets and bombs, making it a solid all-round attack plane.
Adjudicor LA-240 NPLM
The LA-240 NPLM is an AdjudiCor fighter that Philly Bárzaga refitted with napalm bombs. It is a reward from the Madrugada operation Justicia Montero and is great for burning out ground targets.
AdjudiCor LA-240 PSN
The LA-240 PSN is the crop-duster version of the AdjudiCor fighter, fitted with a sprayer for the PG-240 chemical used on tobacco fields. It also keeps guns, rockets and bombs.
AdjudiCor LA-240 RE
The LA-240 RE is the Racing Edition of the AdjudiCor fighter, with a turbocharged diesel engine and loud sponsor decals. It is a store plane that still carries guns, rockets and bombs.