Originally Posted by
SpazSinbad
'Bevo' you may be familiar with the Sea Venom OR Macchi MB326H oxygen systems which mixed pressurized cabin air and oxygen. The RNZAF A-4K KAHU update changed the LOX system to one similar to the above systems (with same mask) as indicated in attached GIF graphic & now PDF page from the RNZAF KAHU 'NATOPS'/flight manual.
Yes I am very familiar with the diluter type oxygen system and regulator control, as the F-4s and early F-15C which I flew had such a system. Hench in response to the statement :
IF LOX installed then there are other issues for pilots such as Pure Oxygen Under Pressure “absorption atelectasis”