I think you know these informations regarding BB214:
http://www.lostbombers.co.uk/bomber.php?id=8522
P-47: according to the MACR , P-51D 44-14540 of 4.FG should have crashed at least in this area on 25.12.1944, a fellow researcher listed the a/c with "Laacher See".
In fact, several single engined a/c (P-51, P-47, Bf 109 and Fw 190) crashed or were reported as "last seen" in this area, but only a Bf 109 is more or less confirmed.
Best regards
Heuser