CT156120 Harvard ll - From the Investigator

Report / October 5, 2020 / Project number: CT156120 - E Cat

Location: 15 Wing Moose Jaw, Saskatchewan
Date: 3 September 2020
Status: Investigation Ongoing

All aircraft involved in this occurrence were part of the NATO Flying Training in Canada program in Moose Jaw, Saskatchewan. A Near Mid Air Collision (NMAC) occurred between a CT156 Harvard II on a simulated minimum fuel Precision Approach Radar (PAR) and a formation of two CT155 Hawk aircraft on visual flight rules (VFR) downwind leg.

The Harvard student trip aircraft was guided by a student PAR controller for a simulated minimum fuel PAR to runway 29R during Visual Meterological Conditions (VMC). Concurrently, a formation of Hawk aircraft were on an extended downwind to set up for a 10 nautical mile straight in approach with the Tower controller. The student PAR controller cleared the Harvard to descend from 5000 feet to 3400 feet ASL while on a base leg. The Instructor Pilot at the controls of the Harvard noticed the Hawk formation on an intercept at the same altitude to their relative 2 o’clock position. A 4g pull was immediately initiated in order to avoid the Hawk formation, resulting in a separation of approximately 300 feet distance. Once clear of the Hawk traffic, the Harvard resumed a glide slope capture to continue with the PAR approach. All aircraft returned to the airfield without further incident.

No aircraft damage or crew injuries resulted from this event.

The investigation did not reveal any evidence of technical issues with the aircraft or Air Traffic Controller equipment. The investigation is now focusing on human factors, procedures, and training of both aircrew and air traffic personnel.

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