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OAT
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Outside Air Temperature
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OBOGS
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On-Board Oxygen Generating System
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OCA
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Offensive counterair.
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OCP
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Over Current Protection
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Off (Direction)
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Informative call indicating attack is terminated and maneuvering to the indicated direction.
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Off-Station
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Not in position.
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Offensive Maneuvering
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Maneuvers against an opponent to achieve weapons parameters.g
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Offset (Direction)
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Informative call indicating maneuver in a specified direction with reference to the target.
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OHEAT
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Overheat
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On-Station
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In position, ready for mission employment.
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OP
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Operational or Optimum
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Opportunity to excel
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A disagreeable job without the time or resources to properly complete.
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Ops Check
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Periodic check of aircraft systems performed by the aircrew (including fuel) for safety of flight.
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OPT
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Optional
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Optimum Turn
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A turn during which energy remains constant and turn rate is maximized.
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ORE
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Operational Readiness Exercise
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Overshoot
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Flight Path Overshoot - Attacking aircraft is forced to the outside of his intended victim's flight path while attempting to achieve a shot. In a severe overshoot, the attacker's flight path carries him forward of the defender's 3-9 line and roles can be reversed.
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OVRD
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Override
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OXY
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Oxygen