FHZ could not be c.1970 as Helicopter Resources didn't form till 1985 when Bill English of Vowells bought Rotor Services, Darwin, & Hookway Aviation, Hobart. The new name came from a company ballot.
The 206A wasn't a local 206 plus that doesn't look like the Hobart Domain as in 1967 the grass was nicely mowed & I don't recall a concrete cricket pitch!!