218. [ 42 U.S.C. 418 ] (a) (1) The Commissioner of Social Security shall, at the request of any State, enter into an agreement with such State for the purpose of extending the insurance system established by this title to services performed by individuals as employees of such State or any political subdivision thereof.
Otter 218 was delivered to the Ontario Provincial Air Service (OPAS) on 29 April 1957 as CF-ODT, registered to the Ontario Department of Lands & Forests.It was the sixth Otter delivered to OPAS and entered service alongside the others, based out of Sault Ste.Marie, providing bush air services to government agencies throughout Ontario.