A Standard Instrument Departure (SID) is a procedure to effect a safe climbout from an
airport under instrument conditions and to provide safe separation between aircraft. The SID is a
preplanned, IFR departure route. It provides the following advantages:
a. Graphic portrayal of departure route.
b. Reduce time delay and radio communications required to issue clearances.
c. Provides approved ATC departure route clearance in the event of radio failure.
d. Can be designed to support noise abatement programs.
Planning for the route of flight is an integral part of preflight preparation. Since, in most
cases, ATC will issue clearance as filed, it is an advantage to file for a SID because it enables the
NFO to anticipate the instructions. The departure plate must be studied thoroughly for headings,
courses, and altitude restrictions. Figure 1 is an example of typical "Pilot NAV" SID, in which
the aircrew is responsible for navigation. Other SIDS, labeled VECTOR, do not require aircrew
navigation beyond an initial heading.
7-2 INSTRUMENT DEPARTURES AND APPROACHES