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Aeronautical Information Manual (AIM), page 319

Index   318 -- Page 319 -- 320



low the Minimum Vectoring Altitude (MVA) or
Minimum IFR Altitude (MIA) in a radar environment
at the request of Air Traffic. This type of DP meets the
TERPS criteria for diverse departures, obstacles, and
terrain avoidance in which random radar vectors be-
low the MVA/MIA may be issued to departing
aircraft. The DVA has been assessed for departures
which do not follow a specific ground track, but will
remain within the specified area.

(a) The existence of a DVA will be noted in
the Takeoff Minimums and Obstacle Departure Pro-
cedure section of the U.S. Terminal Procedures
Publication (TPP). The Takeoff Departure procedure
will be listed first, followed by any applicable DVA.

EXAMPLE-
DIVERSE VECTOR AREA (RADAR VECTORS)
AMDT 1 14289 (FAA)
Rwy 6R, headings as assigned by ATC; requires
minimum climb of 290' per NM to 400.
Rwys 6L, 7L, 7R, 24R, 25R, headings as
assigned by ATC.

(b) Pilots should be aware that Air Traffic fa-
cilities may utilize a climb gradient greater than the
standard 200 FPNM in a DVA. This information will
be identified in the DVA text for pilot evaluation
against the aircraft's available climb performance. Pi-
lots should note that the DVA has been assessed for
departures which do not follow a specific ground
track. ATC may also vector an aircraft off a previ-
ously assigned DP. In all cases, the minimum 200
FPNM climb gradient is assumed unless a higher
climb gradient is specified on the departure, and
obstacle clearance is not provided by ATC until the
controller begins to provide navigational guidance in
the form of radar vectors.

NOTE-
As is always the case, when used by the controller during
departure, the term "radar contact" should not be inter-
preted as relieving pilots of their responsibility to maintain

appropriate terrain and obstruction clearance which may
include flying the obstacle DP.

3. Pilots must preplan to determine if the aircraft
can meet the climb gradient (expressed in feet per
nautical mile) required by the departure procedure,
and be aware that flying at a higher than anticipated

ground speed increases the climb rate requirement in

feet per minute. Higher than standard climb gradients
are specified by a note on the departure procedure

chart for graphic DPs, or in the Take-Off Minimums
and (Obstacle) Departure Procedures section of the
U.S. Terminal Procedures booklet for textual ODPs.
The required climb gradient, or higher, must be main-
tained to the specified altitude or fix, then the
standard climb gradient of 200 ft/NM can be re-
sumed. A table for the conversion of climb gradient
(feet per nautical mile) to climb rate (feet per minute),
at a given ground speed, is included on the inside of
the back cover of the U.S. Terminal Procedures book-
lets.

d. Where are DPs located? DPs will be listed by
airport in the IFR Takeoff Minimums and (Obstacle)
Departure Procedures Section, Section L, of the Ter-
minal Procedures Publications (TPPs). If the DP is
textual, it will be described in TPP Section L. SIDs
and complex ODPs will be published graphically and
named. The name will be listed by airport name and
runway in Section L. Graphic ODPs will also have the
term "(OBSTACLE)" printed in the charted proce-
dure title, differentiating them from SIDs.

1. An ODP 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 ODP, the TPP Section C will
only contain the name of the ODP. Since there may be
both a textual and a graphic DP, Section C should still
be checked for additional information. The nonstan-
dard takeoff minimums and minimum climb
gradients found in TPP Section C also apply to
charted DPs and radar vector departures unless differ-
ent minimums are specified on the charted DP.
Takeoff minimums and departure procedures apply to
all runways unless otherwise specified. New graphic
DPs will have all the information printed on the
graphic depiction. As a general rule, ATC will only
assign an ODP from a nontowered airport when com-
pliance with the ODP is necessary for aircraft to

aircraft separation. Pilots may use the ODP to help

ensure separation from terrain and obstacles.
e. Responsibilities

1. Each pilot, prior to departing an airport on an
IFR flight should:

(a) Consider the type of terrain and other ob-

stacles on or in the vicinity of the departure airport;

(b) Determine whether an ODP is available;

Departure Procedures 5-2-9

Page 319 of the Aeronautical Information Manual (AIM.pdf)
AIM: Official Guide to Basic Flight Information and ATC Procedures

Index   318 -- Page 319 -- 320