 Furthermore, it was also discovered that the aircraft's safety cards depicted a Britten-Norman Trislander, not an Islander; and that the card incorrectly showed the location of the inflation toggle and mouthpiece of the life vest type used by the airline.Autopsies revealed that the pilot and three passengers died as a result of impact injuries; the five other passengers also had impact injuries but had drowned.The NTSB issued a list of recommendations in July, 1985, after investigation of this air accident.