'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.
Last edited by SpazSinbad; 10th Jun 2017 at 09:19.
Reason: + PDF Page