A-3 Skywarrior aircraft oxygen mask variants.

[northcoastaero]

I am looking for information on the oxygen mask configurations used with the Douglas A-3 Skywarrior aircraft. I would like to know

if the following variants of the Skywarrior used the MC-3A hose end connector or used the face or chest mounted miniregulator:

 

-A-3B (may have used both).

-EKA-3B.

-EA-3A (not EA-3B).

 

It appears that the SP-1A seat pan used the MC-3A masks and the Douglas Seat Pan (SKU-1/A) used the miniregulator masks.

I would be thankful for any help.

[Bebel]

On these photos, it's appears that the miniregulator with REDAR hose was in use.

Franck