Hi everyone, a quick question for you FAA TERPS experts: as long as I can recall the protected area for Cat D circling aircraft was based on a 2.3 nm radius from the runway and 300' obstacle clearance. Recently whilst reviewing for a checkride I noticed my company Operations Manual now states that the protected area under TERPS for Cat D is 3.7 nm.
Has there been a recent change I was not aware of, or have I found an error in our sacred book?
MD