Definition
An aircraft classification used for instrument approach procedures, defined by an approach speed of 121 knots or more but less than 141 knots, based on 1.3 times the stall speed in landing configuration at maximum certificated landing weight (Vref). Aircraft in this category must use the approach minimums and circling areas published for Category C on the instrument approach chart.
Plain English
A grouping of aircraft, based on how fast they fly their final approach, that tells the pilot which set of approach minimums and circling distances to use. Category C covers aircraft whose approach speed is between 121 and 140 knots.
Context Anchor
Seen on instrument approach charts, where different aircraft categories may have different weather minimums and protected areas.
Derivation
Category means a class or group. In this use, the letter C names one specific FAA speed group for instrument approaches.
Why Pilots Care
Faster approach speeds require greater visibility and higher cloud ceilings to land safely.
Intuition Check
Category C does not mean the aircraft is a certain size, type, or quality grade. Here, it means the aircraft falls into a specific approach-speed range.
Example Sentence 1
Because the King Air's approach speed put it in the 121 to 140 knot range, the crew briefed the Category C minimums for the ILS.
Example Sentence 2
Weather at the airport met the requirements for Category C aircraft.