British MK-2 visor reshaped to match and not interfere with A-13/ MS22001 oxygen mask and cast oxygen mask receivers;
Cast oxygen mask receiver installation;
Single plug comm connector.
Rear comm cable exit supplemental leather hose fitted in order to bend the cable to the left;
Replacing the A-14 mask, the A-13/ MS22001 oxygen mask was introduced, modified with a supplemental diluter valve;
Boom mike "banana mount" installed.
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MS22001 oxy mask compatible with the DH-115 (British) oxygen system, fitted with the connector for bailout oxygen bottle.
Night flying was trained in DH-115 Vampires, by student wearing Polaroid M-1944 goggles with blue lens and the aircraft fitted with an orange colored canopy. This combination prevented the view to the exterior.