De Havilland DH.4 crash, Aug 1, 1921, High River Alberta
De Havilland DH.4 accident on August 1, 1921 near High River Alberta, Canada with no fatalities.
- Date: August 1, 1921
- Aircraft: De Havilland DH.4
- Location: High River Alberta, Canada
- Fatalities: 0
- Phase of flight: En route
An RCAF De Havilland DH.4, registered G-CYBV, crashed at High River, Alberta, on 1 August 1921. The crew fate is unknown.