Incident at Fredericton, N.B. (ATS operating irregularity)

1996-12-23: ACA642, CL65 was enroute from Toronto to Fredericton with an ETA of 1550z and was cleared for a straight in ILS RWY 15 circling north RWY 33. C-FCLO, BE18 was planed Fredericton, N.B. to Kingston, ON proposed off at 1536z cleared Fredericton SID 1 departure RWY 27 CC at 1541z. C-FCLO departed RWY 27 at 1540 Z and when he checked in on the frequency he advised Moncton ACC that he was off RWY 27 thru 1300 ft. for 5000 ft. heading 040 degrees. The controller immediately determined both aircraft positions and turned the C-FCLO back to 270 degrees. ACA642 was downwind for RWY 27 at this time, altitude unknown. Traffic was passed and C-FCLO showed up on radar 3 miles south of the field at approx. 1545z. Tape checks at Fredericton and Moncton showed C-FCLO received and readback a Fredericton SID 1 departure clearance which indicated RWY heading to 5000 ft. TSB no involvement.