When we first see the cargo plane, it says "Gator Transport" on the left side. At exactly 57:46, during the plane crash (which is just stock footage from Air America), that text has changed to "Air America", thus revealing the stock footage and being a goof from when we first saw the plane.
When Earl is meeting with Frank and Bernie towards the end, Frank is wearing a solid blue guayabera shirt. In the next shot while they are talking Frank is wearing a flowery Hawaiian shirt while Bernie is still wearing the same shirt.
When Frank and Bernie are in the back seat of the patrol car, their hands are handcuffed behind them, but when they are moved to the plane, the handcuffs are in front of them.
Earl is seen in the photo in a US Army uniform (with 4th Infantry Division patch), later he's referred to as a Marine.
When they are on the transport plane there are mountains obviously there are no mountains in Louisiana. Then where they crash they end up in banana trees. That area looks like Mexico or Central America.
After Frank Vega and Bernie Pope arrive at the Baton Rouge airport, they ride past the state capitol building and west across the Interstate 10 bridge across the Mississippi River with Baton Rouge clearly shown in the background. A moment later, they are shown driving past the state capitol building again. Actually, the airport is located just north of downtown along Interstate 110 and you wouldn't need to go that close to the state capitol building to get to the parts of the city shown on the map.)