Definition
A type of Special Use Airspace containing activities which, if not conducted in a controlled environment, could be hazardous to nonparticipating aircraft. The distinguishing feature of a CFA, compared to other Special Use Airspace, is that activities must be suspended immediately when a spotter aircraft, radar, or ground lookout positions indicate an aircraft might be approaching the area. Because CFA activities are suspended when nonparticipating aircraft approach, they are not charted on aeronautical charts.
Plain English
A patch of airspace where things like firing or shooting happen on the ground, but operations stop the moment anyone spots an aircraft heading that way. Because they shut down whenever a plane is nearby, pilots don't need to avoid them — and they're not shown on charts.
Context Anchor
Seen in discussions of special use airspace during preflight planning and route review.
Derivation
The key word is 'controlled' — meaning the firing activity is actively monitored and can be halted. This is what separates a CFA from a Restricted Area, where the hazard is continuous and pilots must stay out.
Why Pilots Care
Pilots may proceed through these areas when firing is suspended, but must confirm current status to avoid unexpected hazards.
Grounding Statement
Picture a firing range with lookouts: if an airplane comes near, the range stops firing.
Intuition Check
Do not assume “controlled” means air traffic control is controlling your flight through the area. Here, “controlled” means the hazardous activity is monitored and stopped when aircraft may be nearby.
Example Sentence 1
Unlike Restricted Areas, controlled firing areas are not depicted on sectional charts because activities are suspended whenever an aircraft is detected nearby.
Example Sentence 2
ATC confirmed the CFA was inactive, allowing the flight to continue without deviation.