Jaba;
Some useless information: The mile high club was 5,280ft in those days. You can only fit one pilot in a Drover. RFDS Nurses had to be short, (which would be illegal today). Single engine ceiling, (a new dimension opened here), was very dependant upon which particular engine was serviceable. The Gypsy engine was fixed pitch, but the Lycomings were constant speed. Make of that what you will.