Officials were investigating reports that the Aerovias de Integracion Regional SA plane, which left Bogota about midnight, had been hit by lightning before crashing just short of the runway at 1:49 a.m. on San Andres Island, a resort area of 78,000 people about 120 miles east of the Nicaraguan coast. Firefighters quickly doused the beginnings of a fire on a wing, police said.