Discovery Air (DA), founded in 2004, was a specialized aviation company that operated primarily in Canada.

[3] In 2008, David Taylor stated, "When we were ousted from the board and management, the wonderful business that we had created was promptly destroyed by the incompetent new board and management creating significant hardship for Discovery Air's loyal employees and wiping-out shareholder value."

A group of investors was created to block Clearvest's progress in buying out Discovery Air's assets.

[22] In September 2018, Great Slave Helicopters, after obtaining a creditor's protection from Ontario Superior Court of Justice, initiated a restructuration program to prepare for its sale.

Together, these had a customer base servicing companies and government entities in the business of mineral, base and precious metal exploration and production, wildlife services, forest fire suppression, oil and gas exploration, power line construction and maintenance, aerial surveys, seismic, air ambulance, scheduled charters and tourism.

It provided, alone and along with several First Nations and Inuit groups in the Northwest Territories and Nunavut, scheduled and chartered passenger and air cargo services to private sector companies and governments.

Numbers correct as of January 4, 2013:[26] Air Tindi, founded in 1988, was a charter airline based in Yellowknife, NT.

With their main base as the Yellowknife Airport, the company provided scheduled and on demand charter services throughout Northern and Western Canada.

The aircraft, a Mk.5, was given an Orenda 14 engine and wings with leading-edge slats, making it closer to a Mk.6, and has been painted in the colours of the Golden Hawks.