Definition
A precision instrument approach and landing flown by a helicopter to a decision height (DH) lower than 200 feet above the touchdown zone but not lower than 100 feet, with runway visual range (RVR) values lower than those permitted under Category I. Copter CAT II operations require specific aircraft equipment, airworthiness approval, crew training, and operational authorization from the FAA, and they use ILS or other precision guidance procedures published specifically for helicopter use.
Plain English
A type of helicopter instrument approach that allows the pilot to descend closer to the runway in worse visibility than a standard instrument approach, but it requires special equipment, special training, and FAA approval to fly it.
Context Anchor
Seen in instrument approach equipment requirements and low-visibility helicopter approach discussions.
Derivation
"Category" comes from the Latin categoria, meaning a class or division. The FAA uses categories (I, II, III) to divide precision approaches into tiers based on how low the decision height and how poor the visibility can be. "Copter" simply identifies that the procedure is built for helicopter performance and approach paths rather than fixed-wing.
Why Pilots Care
Enables helicopter pilots to complete approaches and landings in weather conditions that would otherwise force a missed approach or diversion, provided the aircraft and crew meet the stricter requirements.
Intuition Check
CAT II does not mean “second-best” or “the helicopter category.” It means a specific low-visibility approach level, and “Copter” means that level is being applied to helicopter operations.
Example Sentence 1
The operator's helicopter fleet was certified and crews were trained for Copter CAT II operations, allowing approaches to a 150-foot decision height in reduced visibility.
Example Sentence 2
Only helicopters equipped with the required autopilot coupler and trained crews may conduct Copter Category II operations at this airport.