oper - orth
- operability
- operant condition
- operate on ground cue
- operating antenna
- operating conditions
- operating configuration
- operating life
- operating margin
- operating procedures
- operating system
- operating time
- operation
- operation and maintenance instructions
- operation manual
- operation mode
- operation product integration team
- operation sequence
- operational
- operational aft
- operational bioinstrumentation system
- operational checkout
- operational communication links
- operational conditions
- operational constraints
- operational equipment
- operational forward
- operational frequency
- operational input sequence
- operational input tone
- operational instrument
- operational intercommunication system
- operational left
- operational life
- operational load
- operational long term plan
- operational margins
- operational mid
- operational mode
- operational period
- operational personnel
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