In 1926, the RCAF issued specifications for an aircraft to replace the AircoDH.4 aircraft used at the time. Canadian Vickers designed the Vigil which had steel-structured wings with aluminumskin throughout, and was a strut-braced sesquiplane. The aircraft was overweight, which impacted the aircraft service ceiling and performance, which in turn made it unsuitable for its role. Only one was ever built.