Have you tried one of the Eurocontrol Forums? AIS Agora can be helpful... lots of users worldwide.. may even be able to get a copy of the AIP
HAAAYAYX / HAAAZQZX / FWLLZIZX seem to ring a bell, as do prohibitions with crossing with crossing /flying in Ethiopia north of 12 degrees north latitude.... best to double check though as i've been out of the loop for a bit!