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时间:2010-07-30 13:35来源:蓝天飞行翻译 作者:admin
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8.2.1 The pilot of an IFR flight requires a clearance to conduct a VFR
climb/descent in VMC.
8.2.2 When operating in VMC with an ATC clearance to “Climb/Descend
VFR”, pilots of IFR flights must:
a. comply with the VFR visibility and distance from cloud criteria
stipulated in ENR 1.2 Section 2.;
b. comply with instrument flight rules that are applicable to the
flight; ie, position reporting, radio communications, cleared
route, adherence to ATC clearance, etc; and
c. visually maintain obstacle clearance.
GEN TOC ENR TOC AD TOC Index
ENR (EN ROUTE) A/L 45 effective 24 NOV 05
8.2.3 The pilot of an IFR flight operating VFR climb/descent must maintain
vigilance so as to see and avoid other aircraft. Additionally, the
pilot accepts the responsibility for wake turbulence separation.
8.3 ATC Procedures
8.3.1 On receiving a request for VFR climb/descent, ATC may instruct
the pilot to “Climb/Descend VFR” for a specified portion of the
flight.
8.3.2 When the pilot is cleared to “Climb/Descend VFR”, ATC will provide:
a. mutual traffic information service on IFR flights;
b. traffic information service on known VFR flights as far as practicable;
and
c. a flight information service.
Note: IFR separation is not provided.
9. VFR-ON-TOP – IFR FLIGHTS
9.1 General
9.1.1 A pilot of an IFR flight may request VFR-on-top in lieu of an assigned
altitude. This permits a pilot to select a VFR altitude or flight
level of his/her choice at or below FL180 (subject to any ATC restrictions).
9.1.2 Pilots desiring to climb through cloud, haze, smoke, or other meteorological
formation may request a climb to VFR-on-top.
9.1.3 ATC clearance to “Maintain VFR-on-top” is not intended to restrict
pilots so that they must operate only above an obscuring meteorological
formation (layer). Instead, the clearance permits operation
above, below, between layers, or in areas where there is no meteorological
obscuration.
9.1.4 When, in the controller’s judgement, there is reason to believe that
flight in VMC may become impracticable, the controller must issue
an alternative clearance that ensures separation from all other aircraft
for which he/she has separation responsibility.
9.1.5 The pilot of an IFR flight cleared to “Maintain VFR-on-top” will receive
a service in accordance with para 9.3.2.
9.1.6 An appropriate clearance must be obtained prior to entering a different
class of controlled airspace.
9.1.7 ATC resumes separation responsibility when the aircraft is recleared
to maintain an IFR level.
GEN TOC ENR TOC AD TOC Index
ENR (EN ROUTE) A/L 45 effective 24 NOV 05
9.2 Pilot Procedures
9.2.1 The pilot of an IFR flight requires a clearance to operate VFR-ontop.
9.2.2 When operating with an ATC clearance to “Maintain VFR-on-top”,
pilots on IFR flight plans must:
a. fly at the appropriate VFR levels as prescribed in ENR 1.7 Section
5.;
b. comply with the VFR visibility and distance from cloud criteria
stipulated in ENR 1.2 Section 2.;
c. comply with instrument flight rules that are applicable to the
flight; ie, minimum IFR altitudes, position reporting, radio communications,
cleared route, adherence to ATC clearance, etc;
and
d. advise ATC prior to any altitude change to ensure the exchange
of accurate traffic information.
9.2.3 The pilot of an aircraft operating VFR-on-top must maintain vigilance
so as to see and avoid other aircraft. Additionally, the pilot
accepts the responsibility for wake turbulence separation.
9.3 ATC Procedures
9.3.1 On receiving a request for VFR-on-top, ATC may instruct the pilot
to climb to “VFR-on-top”. This instruction will include:
a. if required, a clearance limit, routing, and an alternative clearance
if VFR-on-top is not reached by a specified altitude;
b. the requirement to report reaching VFR-on-top; and
c. the reported height of the tops or that no tops reports are available.
9.3.2 When the pilot reports reaching VFR-on-top, ATC re-clears the aircraft
to “Maintain VFR-on-top” and will provide:
a. mutual traffic information service on IFR flights,
b. traffic information service on known VFR flights as far as practicable,
and
c. a flight information service.
Note: IFR separation is not provided.
9.3.3 ATC will not clear an aircraft to “Maintain VFR-on-top” at night to
separate holding aircraft from each other or from en route aircraft
unless restrictions are applied to ensure the appropriate IFR vertical
separation.
GEN TOC ENR TOC AD TOC Index
 
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