12 North

611897 Alberta Limited is a small Canadian aviation company registered in Alberta, Canada, operating under the ICAO code THD and the radio callsign DONUT. It does not hold an IATA code, indicating it functions outside the mainstream commercial airline ticketing system. The company is likely a private charter, air taxi, or small regional operator rather than a scheduled commercial carrier. Very limited public information is available about its operations, fleet, or route network. As an Alberta-registered numbered company, it may provide specialized aviation services to local or regional clients within Canada.