The MMU 6 SID

Although the Morristown Six could easily be confused with a ’60s rock-and-roll band, the name actually applies to a standard instrument departure procedure, also known as a SID. SIDs look and feel different from traditional approach procedures, often including far more information arranged in a complex layout some pilots might find confusing.

- Rob Mark & Jason Blair

Air traffic control may issue a SID as part of an IFR clearance to speed the process of moving traffic and reduce the opportunity for communications errors by controllers and pilots. Rather than the clearance delivery controller repeating essentially the same lengthy instructions over and over, use of a SID allows each aircraft to receive detailed instructions about its route in a format the pilot can review before even cranking the engine. A SID will normally include an initial heading and altitude the pilot is expected to fly. The procedure begins when the aircraft takes off, and can vary depending upon the departure runway. Initial departure instructions generally appear in text and graphical format. SIDs make ATC’s role of providing the proper separation between aircraft easier since controllers can expect each departing aircraft to fly the same published track.