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时间:2011-08-13 14:23来源:蓝天飞行翻译 作者:航空
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(SPEC/ENR 1.4-3)
a. CLASS A AIRSPACE.
(1)
That airspace of the United States, including that airspace overlying the waters within 12 NM of the coast of the 48 contiguous States, from 18,000’ MSL to and including FL600 excluding the states of Alaska and Hawaii, Santa Barbara Island, Farallon Island and the airspace S of latitude N25°04’. (See the FAA AIRSPACE CLASSIFICATIONS Table in this section).

(2)
That airspace of the State of Alaska, including that airspace overlying the waters within 12 NM of the coast, from 18,000’ MSL to and including FL600 but not including the airspace less than 1500’ above the surface of the earth and the Alaska Peninsula W of longitude W160°00’.

(SPEC/14 CFR 71.33 & FAA Order 7400.9)

(3)
Operations in Class A Airspace must be conducted under IFR and in compliance with the following:

(a)
ATC clearance must be received prior to entering the airspace.

(b)
Unless otherwise authorized by ATC, each aircraft must be equipped with a two-way radio capable of communicating with ATC on assigned frequencies and must maintain

 

communications while in Class A Airspace. (SPEC/14 CFR 91.135)
(c)
Aircraft must be equipped with an operable coded radar beacon transponder having either Mode 3/A 4096 code capability, replying to Mode 3/A interrogations with the code specified by ATC and automatically replies to Mode C interrogations by transmitting pressure altitude information in 100’ increments.

(SPEC/14 CFR 91.215)


(d)
Pilots may deviate from these provisions if authorization is issued by the ATC facility having jurisdiction of airspace concerned. In case of inoperable transponder, ATC may immediately approve operation in Class A Airspace allowing flight to continue if desired to airport of destination including intermediate stops, or to proceed to airport for suitable repairs, or both. Request for deviation from these provisions must be submitted in writing at least 4 days prior to proposed operation. ATC may authorize a deviation on a continuing basis or an individual flight.

(SPEC/14 CFR 91.135)


(4)
Altitude reservations may be obtained in Class A Airspace.

(5)
Local flying areas can be established within Class A Airspace to permit activity in which aircraft do not maintain constant heading and/or direction. Local flying areas are not Restricted Areas but will be open to any user, traffic permitting. ATC clearance is required and aircraft will be assigned to a FL or group of FL by ATC, depending on activity. Using military organizations may schedule aircraft to operate in these local flying areas in excess of the quantities that can be accepted by ATC, subject to MARSA. In this event, participating aircraft must remain in VFR conditions to preclude collision with other aircraft in the local flying area.

(6)
Procedures for entering and departing Class A Airspace are in the FLIP Flight Information Handbook, Section B.
 
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