Section 2. Departure
Procedures
5-2-1. Pre-taxi Clearance Procedures
a. Certain airports have established pre-taxi clearance programs
whereby pilots of departing instrument flight rules (IFR) aircraft may elect to receive
their IFR clearances before they start taxiing for takeoff. The following provisions are
included in such procedures:
1. Pilot participation is not mandatory.
2. Participating pilots call clearance delivery or ground control
not more than 10 minutes before proposed taxi time.
3. IFR clearance (or delay information, if clearance cannot be
obtained) is issued at the time of this initial call-up.
4. When the IFR clearance is received on clearance delivery
frequency, pilots call ground control when ready to taxi.
5. Normally, pilots need not inform ground control that they have
received IFR clearance on clearance delivery frequency. Certain locations may, however,
require that the pilot inform ground control of a portion of the routing or that the IFR
clearance has been received.
6. If a pilot cannot establish contact on clearance delivery
frequency or has not received an IFR clearance before ready to taxi, the pilot should
contact ground control and inform the controller accordingly.
b. Locations where these procedures are in effect are indicated in
the Airport/Facility Directory.
5-2-2. Taxi Clearance
Pilots on IFR flight plans should communicate with the control tower on
the appropriate ground control or clearance delivery frequency, prior to starting engines,
to receive engine start time, taxi and/or clearance information.
5-2-3. Abbreviated IFR Departure
Clearance (Cleared...as Filed) Procedures
a. ATC facilities will issue an abbreviated IFR departure clearance
based on the ROUTE of flight filed in the IFR flight plan, provided the filed route can be
approved with little or no revision. These abbreviated clearance procedures are based on
the following conditions:
1. The aircraft is on the ground or it has departed visual flight
rules (VFR) and the pilot is requesting IFR clearance while airborne.
2. That a pilot will not accept an abbreviated clearance if the
route or destination of a flight plan filed with ATC has been changed by the pilot or the
company or the operations officer before departure.
3. That it is the responsibility of the company or operations
office to inform the pilot when they make a change to the filed flight plan.
4. That it is the responsibility of the pilot to inform ATC in the
initial call-up (for clearance) when the filed flight plan has been either:
(a) Amended, or
(b) Canceled and replaced with a new filed flight plan.
NOTE-
The facility issuing a clearance may not have received the revised route or the revised
flight plan by the time a pilot requests clearance.
b. Controllers will issue a detailed clearance when they know that
the original filed flight plan has been changed or when the pilot requests a full route
clearance.
c. The clearance as issued will include the destination airport
filed in the flight plan.
d. ATC procedures now require the controller to state the DP name,
the current number and the DP transition name after the phrase "Cleared to
(destination) airport" and prior to the phrase, "then as filed," for ALL
departure clearances when the DP or DP transition is to be flown. The procedures apply
whether or not the DP is filed in the flight plan.
e. STAR's, when filed in a flight plan, are considered a part of
the filed route of flight and will not normally be stated in an initial departure
clearance. If the ARTCC's jurisdictional airspace includes both the departure airport and
the fix where a STAR or STAR transition begins, the STAR name, the current number and the
STAR transition name MAY be stated in the initial clearance.
f. "Cleared to (destination) airport as filed" does NOT
include the en route altitude filed in a flight plan. An en route altitude will be stated
in the clearance or the pilot will be advised to expect an assigned or filed altitude
within a given time frame or at a certain point after departure. This may be done verbally
in the departure instructions or stated in the DP.
g. In both radar and nonradar environments, the controller will
state "Cleared to (destination) airport as filed" or:
1. If a DP or DP transition is to be flown, specify the DP name,
the current DP number, the DP transition name, the assigned altitude/flight level, and any
additional instructions (departure control frequency, beacon code assignment, etc.)
necessary to clear a departing aircraft via the DP or DP transition and the route filed.
EXAMPLE-
National Seven Twenty cleared to Miami Airport Intercontinental one departure, Lake
Charles transition then as filed, maintain Flight Level two seven zero.
2. When there is no DP or when the pilot cannot accept a DP, the
controller will specify the assigned altitude or flight level, and any additional
instructions necessary to clear a departing aircraft via an appropriate departure routing
and the route filed.
NOTE-
A detailed departure route description or a radar vector may be used to achieve the
desired departure routing.
3. If it is necessary to make a minor revision to the filed route,
the controller will specify the assigned DP or DP transition (or departure routing), the
revision to the filed route, the assigned altitude or flight level and any additional
instructions necessary to clear a departing aircraft.
EXAMPLE-
Jet Star One Four Two Four cleared to Atlanta Airport, South Boston two departure then as
filed except change route to read South Boston Victor 20 Greensboro, maintain one seven
thousand.
4. Additionally, in a nonradar environment, the controller will
specify one or more fixes, as necessary, to identify the initial route of flight.
EXAMPLE-
Cessna Three One Six Zero Foxtrot cleared to Charlotte Airport as filed via Brooke,
maintain seven thousand.
h. To ensure success of the program, pilots should:
1. Avoid making changes to a filed flight plan just prior to
departure.
2. State the following information in the initial call-up to the
facility when no change has been made to the filed flight plan: Aircraft call sign,
location, type operation (IFR) and the name of the airport (or fix) to which you expect
clearance.
EXAMPLE-
"Washington clearance delivery (or ground control if appropriate) American Seventy
Six at gate one, IFR Los Angeles."
3. If the flight plan has been changed, state the change and
request a full route clearance.
EXAMPLE-
"Washington clearance delivery, American Seventy Six at gate one. IFR San Francisco.
My flight plan route has been amended (or destination changed). Request full route
clearance."
4. Request verification or clarification from ATC if ANY portion of
the clearance is not clearly understood.
5. When requesting clearance for the IFR portion of a VFR/IFR
flight, request such clearance prior to the fix where IFR operation is proposed to
commence in sufficient time to avoid delay. Use the following phraseology:
EXAMPLE-
"Los Angeles center, Apache Six One Papa, VFR estimating Paso Robles VOR at three
two, one thousand five hundred, request IFR to Bakersfield."
5-2-4. Departure Restrictions, Clearance Void
Times, Hold for Release, and Release Times
a. ATC may assign departure restrictions, clearance void times,
hold for release, and release times, when necessary, to separate departures from other
traffic or to restrict or regulate the departure flow.
1. CLEARANCE VOID TIMES. A pilot may receive a clearance,
when operating from an airport without a control tower, which contains a provision for the
clearance to be void if not airborne by a specific time. A pilot who does not depart prior
to the clearance void time must advise ATC as soon as possible of their intentions. ATC
will normally advise the pilot of the time allotted to notify ATC that the aircraft did
not depart prior to the clearance void time. This time cannot exceed 30 minutes. Failure
of an aircraft to contact ATC within 30 minutes after the clearance void time will result
in the aircraft being considered overdue and search and rescue procedures initiated.
NOTE-
1. Other IFR traffic for the airport where the clearance is issued is
suspended until the aircraft has contacted ATC or until 30 minutes after the clearance
void time or 30 minutes after the clearance release time if no clearance void time is
issued.
2. Pilots who depart at or after their clearance void time are not afforded
IFR separation and may be in violation of 14 CFR Section 91.173 which requires that pilots
receive an appropriate ATC clearance before operating IFR in controlled airspace.
EXAMPLE-
Clearance void if not off by (clearance void time) and, if required, if not off by
(clearance void time) advise (facility) not later than (time) of intentions.
2. HOLD FOR RELEASE. ATC may issue "hold for
release" instructions in a clearance to delay an aircraft's departure for traffic
management reasons (i.e., weather, traffic volume, etc.). When ATC states in the
clearance, "hold for release," the pilot may not depart utilizing that IFR
clearance until a release time or additional instructions are issued by ATC. In addition,
ATC will include departure delay information in conjunction with "hold for
release" instructions. The ATC instruction, "hold for release," applies to
the IFR clearance and does not prevent the pilot from departing under VFR. However, prior
to takeoff the pilot should cancel the IFR flight plan and operate the transponder on the
appropriate VFR code. An IFR clearance may not be available after departure.
EXAMPLE-
(Aircraft identification) cleared to (destination) airport as filed, maintain (altitude),
and, if required (additional instructions or information), hold for release, expect (time
in hours and/or minutes) departure delay.
3. RELEASE TIMES. A "release time" is a departure
restriction issued to a pilot by ATC, specifying the earliest time an aircraft may depart.
ATC will use "release times" in conjunction with traffic management procedures
and/or to separate a departing aircraft from other traffic.
EXAMPLE-
(Aircraft identification) released for departure at (time in hours and/or minutes).
b. If practical, pilots departing uncontrolled airports should
obtain IFR clearances prior to becoming airborne when two-way communications with the
controlling ATC facility is available.
5-2-5. Departure Control
a. Departure Control is an approach control function responsible
for ensuring separation between departures. So as to expedite the handling of departures,
Departure Control may suggest a take off direction other than that which may normally have
been used under VFR handling. Many times it is preferred to offer the pilot a runway that
will require the fewest turns after take off to place the pilot on course or selected
departure route as quickly as possible. At many locations particular attention is paid to
the use of preferential runways for local noise abatement programs, and route departures
away from congested areas.
b. Departure Control utilizing radar will normally clear aircraft
out of the terminal area using DP's via radio navigation aids. When a departure is to be
vectored immediately following take off, the pilot will be advised prior to take off of
the initial heading to be flown but may not be advised of the purpose of the heading.
Pilots operating in a radar environment are expected to associate departure headings with
vectors to their planned route or flight. When given a vector taking the aircraft off a
previously assigned nonradar route, the pilot will be advised briefly what the vector is
to achieve. Thereafter, radar service will be provided until the aircraft has been
reestablished "on-course" using an appropriate navigation aid and the pilot has
been advised of the aircraft's position or a handoff is made to another radar controller
with further surveillance capabilities.
c. Controllers will inform pilots of the departure control
frequencies and, if appropriate, the transponder code before takeoff. Pilots should not
operate their transponder until ready to start the takeoff roll or change to the departure
control frequency until requested. Controllers may omit the departure control frequency if
a DP has or will be assigned and the departure control frequency is published on the DP.
5-2-6. Instrument Departures
The FAA has combined the former standard instrument departures (SID's) and
textual IFR departure procedures into a single entity called an instrument departure
procedure (DP). DP's will be published in either text form, like the former IFR departure
procedures, or in charted graphic form like the former SID's. Regardless of the format,
all DP's provide the pilot with a way to depart the airport and transition to the en route
structure safely. All DP's provide obstacle clearance and any DP may be filed for and
flown. Pilots operating under 14 CFR Part 91 are strongly encouraged to file and fly a DP
at night, during marginal Visual Meteorological Conditions (VMC) and Instrument
Meteorological Conditions (IMC), when one is available. The following paragraphs will
provide an overview of the DP program, why DP's are developed, what criteria are used,
where to find them, how they are to be flown, and finally pilot and ATC responsibilities.
a. Why are DP's necessary? The primary reason is to provide
obstacle clearance protection to aircraft in IMC. A secondary reason, at busier airports,
is to increase efficiency and reduce communications and departure delays. When an
instrument approach is initially developed for an airport, the procedure designer also
does an assessment for departures. If an aircraft may turn in any direction from a runway,
and be clear of obstacles, that runway meets what is called diverse departure criteria and
no DP will be published unless needed for air traffic purposes. However, if there is an
obstacle penetration of what is called the 40:1 slope, then the procedure designer chooses
whether to:
1. Increase the climb gradient; or
2. Increase the standard takeoff minima to allow the pilot to
visually remain clear of the obstacle(s); or
3. Design and publish a specific departure route; or
4. A combination or all of the above.
b. What criteria is used to provide obstruction clearance during
departure?
1. Unless specified otherwise, required obstacle clearance for
all published departures, including diverse, is based on the pilot crossing the departure
end of the runway at least 35 feet above the departure end of runway elevation, climbing
to 400 feet above the departure end of runway elevation before making the initial turn,
and maintaining a minimum climb gradient of 200 feet per nautical mile (FPNM), unless
required to level off by a crossing restriction. A greater climb gradient may be specified
in the DP to clear obstacles or to achieve an ATC crossing restriction. If an initial turn
higher than 400 feet above the departure end of runway elevation is specified in the DP,
the turn should be commenced at the higher altitude. If a turn is specified at a fix, the
turn must be made at that fix. Fixes may have minimum and/or maximum crossing altitudes
that must be adhered to prior to passing the fix. In rare instances, obstacles that exist
on the extended runway centerline may make an "early turn" more desirable than
proceeding straight ahead. In these cases, the published departure instructions will
include the language "turn left(right) as soon as practicable." These departures
will also include a ceiling and visibility minimum of at least 400 and 1. Pilots
encountering one of these DP's should preplan the climb out to gain altitude and begin the
turn as quickly as possible within the bounds of safe operating practices and operating
limitations.
NOTE-
"Practical" or "feasible" may exist in some existing departure text
instead of "practicable."
2. The 40:1 slope begins at 35 feet above the departure end of the
runway and slopes upward at 152 FPNM until reaching the minimum IFR altitude or entering
the en route structure.
3. Climb gradients greater than 200 FPNM are specified when
required for obstacle clearance and/or ATC required crossing restrictions.
EXAMPLE-
"Cross ALPHA intersection at or below 4000; maintain 6000." The pilot climbs at
least 200 FPNM to 6000. If 4000 is reached before ALPHA, the pilot levels off at 4000
until passing ALPHA; then immediately resumes at least 200 FPNM climb.
4. Climb gradients may be specified only to an altitude/fix, above
which the normal gradient applies.
EXAMPLE-
"Minimum climb 340 FPNM to ALPHA." The pilot climbs at least 340 FPNM to ALPHA,
then at least 200 FPNM to MIA.
5. Some DP's established solely for obstacle avoidance require a
climb in visual conditions to cross the airport or an on-airport NAVAID in a specified
direction, at or above a specified altitude.
EXAMPLE-
"Climb in visual conditions so as to cross the McElory Airport southbound, at or
above 6000, then climb via Keemmling radial zero three three to Keemmling VORTAC."
c. Who is responsible for obstacle clearance? DP's are designed so
that adherence to the procedure by the pilot will ensure obstacle protection.
Additionally:
1. Obstacle clearance responsibility also rests with the pilot when
he/she chooses to climb in visual conditions in lieu of flying a DP and/or depart under
increased takeoff minima rather than fly the DP. Standard takeoff minima are one statute
mile for aircraft having two engines or less and one-half statute mile for aircraft having
more than two engines. Specified ceiling and visibility minima will allow visual avoidance
of obstacles until the pilot enters the standard obstacle protection area. Obstacle
avoidance is not guaranteed if the pilot maneuvers farther from the airport than the
specified visibility minimum. That segment of the procedure which requires the pilot to
see and avoid obstacles ends when the aircraft crosses the specified point at the required
altitude. Thereafter, standard obstacle protection is provided and the standard climb
gradient is required unless specified otherwise.
2. ATC may assume responsibility for obstacle clearance by
vectoring the aircraft prior to minimum vectoring altitude by using a Diverse Vector Area
(DVA). The DVA has been assessed for departures which do not follow a specific ground
track. ATC may also vector an aircraft off a previously assigned DP. In all cases, the 200
FPNM climb gradient is assumed and obstacle clearance is not provided by ATC until the
controller begins to provide navigational guidance in the form of radar vectors.
NOTE-
When used by the controller during departure, the term radar contact should not be
interpreted as relieving pilots of their responsibility to maintain appropriate terrain
and obstruction clearance.
d. Where are DP's located? DP's will be listed by airport in the
IFR Take-Off Minimums and Departure Procedures Section, Section C, of the Terminal
Procedures Publications (TPP's). If the DP is textual, it will be described in TPP Section
C as previously done. Complex non-RNAV and all RNAV DP's will be published graphically and
named. The name will be listed by airport name and runway in Section C. Graphic DP's
developed solely for obstacle clearance will also have the term "(OBSTACLE)"
printed on the charted procedure.
NOTE-
Existing textual and RNAV DP's will be reviewed individually by the FAA and, where
appropriate, processed for graphic depiction.
1. A DP that has been developed solely for obstacle avoidance will
be indicated with the symbol "T" on appropriate Instrument Approach Procedure
(IAP) charts and DP charts for that airport. The "T" symbol will continue to
refer users to TPP Section C. In the case of a graphic DP, the TPP Section C will only
contain the name of the DP. Since there may be both a textual and a graphic DP, Section C
should still be checked for additional information. All information on new graphic DP's
will be printed on the graphic depiction. If not assigned a DP by ATC, any published DP
may be filed and flown. As a general rule, ATC will only assign a DP from a nontowered
airport when compliance with the DP is necessary for aircraft to aircraft separation.
2. All charted graphic DP's will be listed by name in the index in
the front of the TPP volume.
e. Responsibilities.
1. Each pilot, prior to departing an airport on an IFR flight
should consider the type of terrain and other obstacles on or in the vicinity of the
departure airport; and:
2. Determine whether a DP is available; and
3. Determine if obstacle avoidance can be maintained visually or if
the DP should be flown; and
4. Consider the effect of degraded climb performance and the
actions to take in the event of an engine loss during the departure.
5. After an aircraft is established on a DP and subsequently
vectored or cleared off of the DP or DP transition, pilots shall consider the DP canceled,
unless the controller adds "expect to resume DP."
6. Aircraft instructed to resume a procedure which contains
restrictions, such as a DP, shall be issued/reissued all applicable restrictions or shall
be advised to comply with those restrictions.
7. If an altitude to "maintain" is restated, whether
prior to departure or while airborne, previously issued altitude restrictions are
canceled, including any DP altitude restrictions if any.
8. Pilots of civil aircraft operating from locations where DP's are
effective may expect ATC clearances containing a DP. Use of a DP requires pilot possession
of the textual description or graphic depiction of the approved current DP, as
appropriate. ATC must be immediately advised if the pilot does not possess a charted DP or
a preprinted DP description, or the aircraft is not capable of flying the DP. Notification
may be accomplished by filing "NO DP" in the remarks section of the filed flight
plan or by the less desirable method of verbally advising ATC. Adherence to all
restrictions on the DP is required unless clearance to deviate is received.
9. Controllers may omit the departure control frequency if a DP
clearance is issued and the departure control frequency is published on the graphic DP.
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