Hallo Marko,
I believe the PE stands for Port of Embarkation, which ties in nicely with New York.
The ASC is probably the US-based Air Service Command and not the AFSC (Air Force Service Command) in the ETO.
The PAO I will have to guess. It could be Prepared for Action Overseas or similar. I know of a POM, which stood for Prepared for Overseas Movement.
I again guess the cards you are looking at are for aircraft sent across the Atlantic as deck cargo on ships.
Hope this helps,
Martin Gleeson.
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