Upon questioning by Labor Senator Tim Ayres, General Burr confirmed the helicopter's design flaw meant that simultaneous suppression fire from a side mount gun while troops were rappelling was not possible
All the years of hard won combat experience with the D and H model Hueys in Vietnam were all for nought, unimpeded access to the cabin for the troops and the gunners having unimpeded ability to lay down fire. Trouble was the personnel in Oz with the experience were not retained by the services.