odd - oper
- odd flight level
- odd parity
- oddeven
- oddleg calliper
- oddness
- oddodd
- of acknowledgement of receipt
- off
- off and on
- off or on
- off position
- off time
- off-aerodrome
- off-aerodrome location
- off-airway
- off-airway clearance
- off-airway flight
- off-airway route
- off-airway routing
- off-balance
- off-block time
- off-boresight angle
- off-budget
- off-center
- off-centre
- off-course
- off-course deviation
- off-course indicator
- off-course signal
- off-design
- off-field conditions
- off-field landing
- off-line
- off-line charter
- off-line charter flight
- off-load test
- off-load the pump
- off-load voltage
- off-loadables
- off-loaded passenger
