CAAP 43-01 v2.0 covers it quite well. Section 4.2
https://www.casa.gov.au/sites/defaul...ce-release.pdf
As far as the original post - 1 of 2 Coms U/S - that would probably be fine if so endorsed as not a major defect and not required for VFR .
1 Com Removed - needs an EO.