This 1970 Ayres S2R Thrush was imported to Canada in 1990 and first registered to to the aerial spraying company Larry Lysiuk Ltd., Delhi, Ontario. It was sold to Hicks & Lawrence Ltd. of St. Thomas, ON in February 2002 and to Supermarine Aircraft Inc. in October 2007. It was exported to the USA in December 2007 and now flies with Olsem Aerial Application Services LLC. of Westbrook, MN as N51AR.

This PZL-Mielec M-18A Dromader was the first M-18A acquired by Supermarine Aircraft (owned by the Martindale family) from Poland in August 1990 after years operating Grumman/Schweizer G-164A and Cessna A188B "ag"aircraft. The company later it bought Hicks & Lawrence's large fleet of M-18s in 2001 and flew 21 different M-18s over its history. Supermarine later moved its HQ from St. Thomas Airport to Port Burwell, ON, and C-GRBM is the last aircraft in its fleet. Most Canadian M-18s were utilized on seasonal forestry contracts in Eastern Canada to spray spruce budworm and other infestations.

This PZL-Mielec M-18A Dromader was imported to Canada in June 1995 by Hicks & Lawrence Ltd. of St. Thomas, ON. Mervin Hicks partnered with Thomas Lawrence in 1950 to establish a crop spraying business in 1950. The Hick & Lawrence spray aircraft fleet was sold to the Supermarine Aircraft owned by the Martindale family in 2001 which operated a total of 21 different M-18s between 2001 and 2020, including C-FVYH which was exported in October 2020. The M-18s were mostly flown on seasonal forest spraying contracts battling spruce budworm infestations in eastern Canada.