NOTE: Refer to General Planning, Chapter 2. EXPLANATION OF TERMS, for definitions of PROHIBITED, RESTRICTED, WARNING, and MILITARY OPERATING AREAS.
7.
SPECIAL USE FREQUENCY - USAF and USN each loaned FAA two UHF frequencies, designated special use frequencies. Each ARTCC is assigned one or more of these frequencies for use on an area basis in the high altitude structure. This procedure eliminates the need for pilots to change frequency as their flight progresses from sector to sector in the same ARTCC only.
a. Special use frequencies will be assigned to:
(1)
USAF Air Combat Command (ACC), US Navy and Air National Guard single-pilot jet aircraft formations operating at night or in instrument weather conditions. Formations of five or more USAF ACC aircraft deploying either to a continental United States staging base or nonstop to an overseas location are authorized to use special use frequencies at any time.
(2)
Pressure suit flights of aircraft (F-15, etc.) at all altitudes/flight levels except where terminal operations require the assignment of other frequencies.
(3) All aircraft during supersonic flight.
b.
Pilots of aircraft in the above categories should request a special use frequency before encountering instrument conditions of supersonic flight. Aircraft operating in a special operating area, except aircraft transiting through such an area shall not be assigned a special use frequency. The special use frequency may be assigned as "back-up" for the high altitude sector when direct communications is essential because of a potential emergency condition situation.
8. ALTIMETER SETTINGS - Except in the interest of flight safety, the SCR-718 radio altimeter will be used only over broad ocean areas starting not less than 50 NM offshore.
a. SURFACE TO 18,000’ MSL - FAR prescribe that altitude shall be in FEET ABOVE SEA LEVEL (QNH). Accordingly, the current reported altimeter setting of a station along the route and within 100 NM of the aircraft shall be used. If there is no station within 100 NM, the current reported altimeter setting of an appropriate available station shall be used. In the case of an aircraft without a functioning radio, the elevation of the departure
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址:DFIP AREA PLANNING NORTH AND SOUTH 1(129)