What does O4 Stand For?
For O4 we have found 6 definitions.
What does O4 mean? We know 6 definitions for O4 abbreviation or acronym in 2 categories. Possible O4 meaning as an acronym, abbreviation, shorthand or slang term vary from category to category. Please look for them carefully.
O4 Stands For:
|***||O4||Officer grade: Captain or Colonel|
|***||O4||Officer grade: Commander or Lieutenant Colonel|
|**||O4||Officer grade: Lieutenant Commander or Major|
Iata Aircraft Codes