Centaurus the VH-BAT incident is interesting. The only place to go for more info would be the National Archives or TROVE may have more. I have been looking at Butler's history and how it got taken over by Ansett but this sort of day to day operational stuff does not appear in the various books on Butler Air Transport. The problem is these sort of reports (225s) were handled by ASIB in the old DCA and when it became DOT it was renamed as BASI (1982) then later into the ATSB. Whether they would archive this sort of stuff is problematic the stats about stuff, yes, major accident reports, yes but day to day minutae hardly likely. The best place would actually be the aircraft file for VH-BAT that would have been created by DCA and carried forward over the years. Having delved deeply in the past through CAA, CASA etc records and files best I can say is they were an abominable mess with no logical structure or filing system structure, might be on a day file as they called them from that period with DCA but that would be a trip to the National Archives and probably a week of intensive reading.
Interesting that it does not mention if they were in IMC, too low for a jet stream or CAT probably flew into the terminal stage of a CB where they are collapsing - easy to do without WX RDR.
One thing that did spring out reading on this era of flight was of the technical stuff aboutl these first generation British Airliners, Vickers and De havilland is the issue of the quality of the aluminium they used, it appears most of these early British aircraft were constructed of aluminium alloy that was essentially recycled aluminium scrap from various sources, the alloys were 'softer' than American hard aluminium alloys but met the standard of the day, It helps explain why they had so many 'fatigue' or wear and tear issues in the airframes (wings, epennage and engine mounts) Vickers and De havilland both and why the only answer came later with new spars etc from harder alloys. The designs were not really at fault but then again like all these things hindsight (accidents and failures) led to design and manufacturing changes we tend to forget these aircraft were really at the time 'çutting edge' technology.
Never had a ride in the Viscount but looking at the type gives the impression of a typical British dogs breakfast approach to cockpit ergonomics. The pilot accounts of the type confirms the comments above cramped and messy with stuff all over each one different from the next you take a look at the cockpit photos and it makes you think!. Funnily enough they had very high passenger appeal and were well liked by the travelling public who thought they were great and the kept them going for quite a long time really. The major issue was not the darts but the airframe maintenance demands were very expensive to keep up as they aged, soft metal bending and cracking!
Here is a shot of VH-BUT from the WWW:
