Tinpis - even later. The F28 was still servicing Broken Hill in 1989. 3hours 30 minutes return flight from Sydney!
Here's a close call for you. F28 on descent into BH was advised of a local light aircraft departure outbound on the same track as the inbound F28. F28 calls the light aircraft and asked if they would maintain 3000ft and they would descend to 4000ft until sighted and confirmed passing. A few minutes later the F28 crew look out and there is a lightie coming straight for them at the same level. Guess what the elevation of BH is? About 1000feet. The light aircraft pilot set zero on the altimeter on the ground at BH!