assigning, maintaining, and enhancing safety regulating air commerce in a way that best encouraging and developing civil controlling the use of the navigable airspace consolidating research and development for developing and operating a common system prov
movement of helicopters from one part of a heliportairport to another. A taxi route includes the
taxiway plus the appropriate clearances on both sides.
hh. Taxiways. A taxiway is the central portion
of a taxi route. This AC defines two types of helicopter taxiways:
1 Ground Taxiway. A ground taxiway is an obstruction-free corridor intended to permit the
surface movement of a wheeled helicopter under its own power with wheels on the ground.
NOTE: The minimum dimensions defined for a ground taxiway may NOT be adequate for use by
skid-equipped helicopters or for hover taxi use by wheeled helicopters.
2 Hover Taxiway. A hover taxiway is an obstruction-free corridor intended to permit the hover
taxiing of a helicopter. [In Annex 14 - Aerodromes, to the Convention on International Civil Aviation
ICAO uses the term Air Taxiway to describe a very similar heliport component.]
ii. Touchdown and Lift-off Area TLOF. A
load bearing, generally paved area, normally centered in the FATO, on which the helicopter lands or takes
off.
jj. Transport Heliport. A heliport intended to
accommodate air carrier operators providing scheduled or unscheduled service with large
helicopters.
kk. Unshielded Obstruction. A proposed or
existing obstruction that may need to be marked or lighted since it is NOT in close proximity to another
marked and lighted obstruction whose highest point is at the same or higher elevation.
ll. Visual Segment Reference Line. A line
measured perpendicular to the final course at a distance of 75 feet 22.9 m from the helipoint. It
extends 75 feet 22.9 m on each side of the final course centerline.
102. BASIS. This AC implements the objectives set forth in Section 40101 of Title 49 United States Code
USC. The statute states, in part: Safety Considerations in Public Interest… the Administrator
shall consider the following matters, among others, as being in the public interest: