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navigate laterally and vertically to meet all published
restrictions. ATC is responsible for obstacle clearance
when issuing a “descend via” clearance from a previously
assigned altitude.
REFERENCEFAAO
JO 7110.65, Para 4-5-6, Minimum En Route Altitudes.
FAAO JO 7110.65, Para 5-5-9, Separation From Obstructions.
NOTE-
3. Pilots navigating on a STAR/RNAV STAR/FMSP shall
maintain last assigned altitude until receiving clearance to
“descend via.”
4. Pilots cleared for vertical navigation using the
phraseology “descend via” shall inform ATC upon initial
contact.
EXAMPLE-
“Delta One Twenty One leaving FL 240, descending via
the Civit One arrival.”
REFERENCEAIM,
Para5-4-1, Standard Terminal Arrival (STAR), Area Navigation
(RNAV) STAR, and Flight Management System Procedures (FMSP) for
Arrivals.
1. Assign an altitude to cross the waypoint/fix,
if no altitude is depicted at the waypoint/fix, for
aircraft on a direct routing to a STAR/RNAV
STAR/FMSP.
EXAMPLE-
“Proceed direct Luxor, cross Luxor at or above flight level
two zero zero, then descend via the Ksino One Arrival.”
2. A descend via clearance shall not be used
where procedures contain published “expect”
altitude restrictions.
NOTEPilots
are not expected to comply with published “expect”
restrictions in the event of lost communications, unless
ATC has specifically advised the pilot to expect these
restrictions as part of a further clearance.
3. If it is necessary to assign a crossing altitude
which differs from the STAR/RNAV STAR/FMSP
altitude, emphasize the change to the pilot.
PHRASEOLOGYDESCEND
VIA THE (STAR/FMSP) ARRIVAL EXCEPT
CROSS (fix, point, waypoint) (revised altitude
information).
EXAMPLE-
“United 454 descend via the Haris One Arrival, except
cross Haris at or above one six thousand.”
NOTEThe
aircraft should track laterally and vertically on the
Haris One Arrival and should descend so as to cross Haris
at or above 16,000; remainder of the arrival shall be flown
as published.
4. If it is necessary to assign an interim altitude,
or assign a final altitude not contained on a
STAR/RNAV STAR/FMSP, the provisions of subpara
4-5-7h may be used in conjunction with
subpara4-5-7a.
PHRASEOLOGYDESCEND
VIA THE (STAR/RNAV STAR/FMSP)
ARRIVAL EXCEPT AFTER (fix) MAINTAIN (revised
altitude information).
EXAMPLE-
“United 454 descend via the Haris One Arrival, except
after Bruno, maintain one zero thousand.”
NOTEThe
aircraft should track laterally and vertically on the
Haris One Arrival and should descend so as to comply with
all speed and altitude restrictions until reaching Bruno and
then maintain 10,000. Upon reaching 10,000, aircraft
should maintain 10,000 until cleared by ATC to continue to
descend.
REFERENCEFAAO
JO 7110.65, Para 4-7-1, Clearance Information.
AIM, Para 5-4-1, Standard Terminal Arrival (STAR), Area Navigation
(RNAV) STAR, and Flight Management System Procedures (FMSP) for
Arrivals.
i. When a pilot is unable to accept a clearance,
issue revised instructions to ensure positive control
and standard separation.
NOTE-
1. 14 CFR Section 91.123 states that a pilot is not allowed
to deviate from an ATC clearance “that has been
obtained...unless an amended clearance is obtained”
(except when an emergency exists).
2. A pilot is therefore expected to advise the controller if
a clearance cannot be accepted when the clearance is
issued. “We will try” and other such acknowledgements do
not constitute pilot acceptance of an ATC clearance.
3. Controllers are expected to issue ATC clearances which
conform with normal aircraft operational capabilities and
do not require “last minute” amendments to ensure
standard separation.
4. “Expedite” is not to be used in lieu of appropriate
restrictions to ensure separation.
REFERENCEFAAO
JO 7110.65, Para 10-1-3, Providing Assistance.
2/14/08 JO 7110.65S
Altitude Assignment and Verification 4-5-7
4-5-8. ANTICIPATED ALTITUDE CHANGES
If practicable, inform an aircraft when to expect climb
or descent clearance or to request altitude change
from another facility.
PHRASEOLOGYEXPECT
HIGHER/LOWER IN (number of miles or
minutes) MILES/MINUTES,
or
AT (fix). REQUEST ALTITUDE/FLIGHT LEVEL
CHANGE FROM (name of facility).
If required,
AT (time, fix, or altitude).
　
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