12/2/21
AIM
(a)
Consider the type of terrain and other
obstacles on or in the vicinity of the departure airport;
(b)
Determine whether an ODP is available;
(c)
Determine if obstacle avoidance can be
maintained visually or if the ODP should be flown;
and
(d)
Consider the effect of degraded climb
performance and the actions to take in the event of an
engine loss during the departure. Pilots should notify
ATC as soon as possible of reduced climb capability
in that circumstance.
NOTE
−
Guidance concerning contingency procedures that address
an engine failure on takeoff after V
1
speed on a large or
turbine
−
powered transport category airplane may be
found in AC 120
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91, Airport Obstacle Analysis.
(e)
Determine if a DVA is published and
whether the aircraft is capable of meeting the
published climb gradient. Advise ATC when
requesting the IFR clearance, or as soon as possible,
if unable to meet the DVA climb gradient.
(f)
Check for Takeoff Obstacle Notes pub-
lished in the TPP for the takeoff runway.
2.
Pilots should not exceed a published speed
restriction associated with a SID waypoint until
passing that waypoint.
3.
After an aircraft is established on a SID and
subsequently vectored or cleared to deviate off of the
SID or SID transition, pilots must consider the SID
canceled, unless the controller adds “expect to
resume SID;” pilots should then be prepared to rejoin
the SID at a subsequent fix or procedure leg. If the
SID contains published altitude and/or speed
restrictions, those restrictions are canceled and pilots
will receive an altitude to maintain and, if necessary,
a speed. ATC may also interrupt the vertical
navigation of a SID and provide alternate altitude
instructions while the aircraft remains established on
the published lateral path. Aircraft may be vectored
off of an ODP, or issued an altitude lower than a
published altitude on an ODP, at which time the ODP
is canceled. In these cases, ATC assumes responsibil-
ity for terrain and obstacle clearance. In all cases, the
minimum 200 FPNM climb gradient is assumed.
4.
Aircraft instructed to resume a SID procedure
such as a DP or SID which contains speed and/or
altitude restrictions, must be:
(a)
Issued/reissued all applicable restrictions,
or
(b)
Advised to “Climb via SID” or resume
published speed.
EXAMPLE
−
“Resume the Solar One departure, Climb via SID.”
“Proceed direct CIROS, resume the Solar One departure,
Climb via SID.”
5.
A clearance for a SID which does not contain
published crossing restrictions, and/or is a SID with
a Radar Vector segment or a Radar Vector SID, will
be issued using the phraseology “Maintain (
alti-
tude).”
6.
A clearance for a SID which contains
published altitude restrictions may be issued using
the phraseology “climb via.” Climb via is an
abbreviated clearance that requires compliance with
the procedure lateral path, associated speed and
altitude restrictions along the cleared route or
procedure. Clearance to “climb via” authorizes the
pilot to:
(a)
When used in the IFR departure clearance,
in a PDC, DCL or when cleared to a waypoint
depicted on a SID, to join the procedure after
departure or to resume the procedure.
(b)
When vertical navigation is interrupted
and an altitude is assigned to maintain which is not
contained on the published procedure, to climb from
that previously-assigned altitude at pilot’s discretion
to the altitude depicted for the next waypoint.
(c)
Once established on the depicted depar-
ture, to navigate laterally and climb to meet all
published or assigned altitude and speed restrictions.
NOTE
−
1.
When otherwise cleared along a route or procedure that
contains published speed restrictions, the pilot must com-
ply with those speed restrictions independent of a climb via
clearance.
2.
ATC anticipates pilots will begin adjusting speed the
minimum distance necessary prior to a published speed
restriction so as to cross the waypoint/fix at the published
speed. Once at the published speed ATC expects pilots will
maintain the published speed until additional adjustment
is required to comply with further published or ATC
assigned speed restrictions or as required to ensure
compliance with 14 CFR Section 91.117.
3.
If ATC interrupts lateral/vertical navigation while an
aircraft is flying a SID, ATC must ensure obstacle
clearance. When issuing a “climb via” clearance to join or
Departure Procedures
5
−
2
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