hijackers demanded a Curtiss-Wright C-46 Commando to leave its Bluefields-Big Corn Island route and land in Costa Rica instead. The pilots obeyed and landed at Limón, where the perpetrators surrendered. On 29 June 1983, an Aeronica CASA C-212 Aviocar (registered YN-BYZ) was damaged beyond economical repair in a crash landing at Augusto C. Sandino International Airport, which happened because the copilot had accidentally applied reverse thrust rather than the flaps immediately before landing. On 20 April 1985, a problem was encountered with the additional fuel tanks that a Fokker F27 Friendship (registered YN-BZF) had been fitted with for the delivery flight to Aeronica from Europe to Nicaragua. The pilots decided to return to Kulusuk Airport in Greenland, the place of their most recent fuel stop, but failed to do so. The aircraft crashed on a snow-covered strip, killing two of the five occupants. On 28 December 1987 at 14:36 local time, an Aeronica Douglas DC-6 lost its inner right engine whilst en route a cargo flight from Managua to Panama City. Debris had also damaged the outer right engine, forcing the pilots to execute a water landing in a river in Costa Rica, which all six persons on board survived. The worst accident in the history of Aeronica happened on 26 May 1988, when another DC-6 (registered YN-CBE) crashed near Limón in Costa Rica, killing the six occupants. On 10 November 1991, an Aeronica Boeing 727-100 (registered YN-BXW, the same aircraft that had been damaged in a bomb explosion in 1981) was destroyed in a fire at Managua Airport, which had arisen from an ignited oxygen leak during maintenance work. References Defunct airlines of Nicaragua Airlines established in 1981 Airlines disestablished in 1992 Companies based in Managua