(1) Category I
Category I includes lightweight, single-engine, personal-type, propeller-driven aircraft. (It
does not include higher performance, single-engine aircraft such as the T-28.)
(2) Category II
Category II includes lightweight, twin-engine, propeller-driven aircraft weighing 12,500
pounds or less (Aero Commander, Twin Beechcraft, DeHavilland Dove, or Twin Cessna). It does NOT
include such aircraft as the Lodestar, Learstar, or DC-3.
(3) Category III
Category III includes all other aircraft such as the higher performance single-engine, large
twin-engine, four-engine, and turbojet.
b. Same Runway Separation
Separate an arriving aircraft from another aircraft using the same runway. Ensure that the
arriving aircraft does not cross the landing threshold until one of the following conditions exists or
(1) The other aircraft has landed and taxied off the runway (Figure 2-7).
Figure 2-7. Arrival separation (other aircraft taxiied off runway)
(2) Between sunrise and sunset, if you can determine distances by referring to suitable landmarks
and the other aircraft has landed, that aircraft need not be clear of the runway