The KIWI A-4K KAHU LOX change was from the earlier A-4 wide
AFAIK LOX system which was 'pure oxygen under pressure' - no cabin air dilution. This is the system being contemplated perhaps however no details have been provided
AFAIK. From what I have read and seen in online forums the KAHU LOX system with cabin air dilution was good. I myself flew the Sea Venom & Macchi MB326H systems (including A4G LOX system). Personally the A-4 LOX system was not problematic and I coughed (with “absorption atelectasis”) only a few times however I was constantly VALSALVERING on the ground as were all the other A4G pilots. It could get painful at night until ears cleared with the maneuver. Attached are 3 pages about the LOX system in an A4G from the A-4E/F/G NATOPS manual + 4 pages from the RAN/RAAF Macchi MB326H flight manual about the oxygen system therein.
