Rabbi Meir writes:  

<A friend showed me a Sefer, Kosnos Or, which on the title page is 
named MeOrey Eish, by Elozor Av BD of KK Zablodova [also author of 
Shut Panim Me'iros - could someone please tell me more about him]: 
who suggests that from the Mishnah Chullin 113; those things that 
have Tum'as Neveilo i.e. including birds, are within the prohibition 
of BBeChalav. He argues that BPekuah can not be Neveilo and may 
therefore be cooked with milk. He says this is written explicitly in 
the Sefer Mem Aleph [who is that?] and is possibly agreed to by all.>

     It may be my amaratzus, but I don't understand: the reason ben 
p'kuah cannot become n'veila is because it is sh'chuta by virtue of 
the sh'chita of the mother.  Had that sh'chita been a sh'chita 
p'sula, which rendered the mother n'veila, and the ben p'kuah then 
died without a proper sh'chita, would it not be n'veila?

EMT