• (N7671) de Havilland Canada Inc., Downsview, ON. Rolled out 31-Dec-1968. First flight 27-Jan-1969.

• (N7671) Cable Commuter, Ontario, CA(not delivered) Jan-1969.

• N3257 Central Texas Airlines, Killeen, Texas. (not delivered). Jun-1969

• N3257 Twin Otter Amalgamated J.V.III. Delivered 30-Jun-1969.

• N3257 Leased to Pennsylvania Commuter, State College, PA. Regd Jun-1969.

• N3257 Air Illinois, Carbondale, IL, Regd Dec-1970.

• N3257 Chicago & Southern Airlines. Regd Mar-1971.

• N3257 Air North, Burlington, VT. Regd Oct-1971.

• N3257 Air Illinois, Carbondale, IL. Regd May-1974.

• N3257 B & B Partnership, Rapidan, VA.31-Aug-1984.

• N3257 Leased to Mountain Air Cargo, Denver, NC. Regd 1984.

Accident: Homer City, PA 11-Oct-1985.1 crew killed, Aircraft written off. The aircraft was observed flying at low altitude along about a 5 mile distance. Some witnesses described the aircraft altitude as just above treetops. Witness heard engine sounds and saw lights on the aircraft. The aircraft flight was on a southeast direction before it collided with rising terrain at a height of about ,1250 ft. The wreckage was scattered along a distance of 375 ft and oriented on a 160 degree magnetic heading. The destination, Pittsburgh, is located southwest of the departure point, state college. Evidence of aircraft malfunction was not disclosed. The aircraft had 1,902 lbs of cargo including 65 lbs of dry ice which was contained in styrofoam boxes. Autopsy and toxicological findings were negative. The pilot flew nightly, from State College to Pittsburgh and returned the following morning. He operated a business during the day. Witnesses stated the Pilot was well rested and in good spirits before the flight.

• N3257 B & B Partnership, Rapidan, VA. Removed from register 06-Nov-2012

• Written off •