Departures - P-8010148

INSTRUMENT NAVIGATION

DEPARTURES

Introduction

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