Ah. My era of the Eagle was the 83 relaunch; we had Dan Dare, grandson of the original (and later, reprints of the original stories), but I don't recall Biggles making the jump. The Biggles I encountered was the one from the books - and the time-travel film that came out around 1985, which I remember as quite entertaining, but I've not seen it since the eighties...
The jackets in the 1986 Biggles movie were totally fantastic!!! (I once started a thread asking if anyone knew who made them, but seemingly nobody did) And besides the dreadful music, I enjoyed the movie too. A good romp.