AERO-ALPHABET - Oa

Oakland (Oakland Airmotive Co. - Oakland . CA . USA)
Oakland Centaurus

OAW (Ostdeutsche Albatroswerke GmbH.)
(Albatros OAW)

Oaxaca (Oaxaca Aerospace / Raul and Rodrigo . Fernandez)
Oaxaca PE-210A Pegasus