Flight Training Instruction - Cnatra - U.S. Navy

T-6B PRIMARY INSTRUMENT NAVIGATION CHAPTER FOUR
b. Standard Instrument Departures (SIDs) are air traffic control procedures printed in
graphic form for pilot use. SIDs provide obstruction clearance and a transition from
the terminal area to the appropriate enroute structure. Found in DOD FLIP approach
plates.
2. Radar Departure.
Many military and civilian fields have no published DPs. A radar departure is a procedure used
in the absence of a DP, or if the pilot elects not to fly the published DP. The radar departure may
use radar vector instructions or allow aircraft to proceed direct to a point along the flight plan
route. The pilot can only expect a radar departure if it is requested in the remarks section of the
flight plan; otherwise, a DP may be assigned by ATC if available.
3. Diverse.
The most basic of the four, you are cleared as filed on your flight plan.
a. Initial turn is made at 400’ AGL and a 200 feet per nautical mile (FPNM) climb rate
is required.
i. For example, you file from Grand Junction CO to Salt Lake City Intl via Direct
GJT V134 to FFU, then V21 to SLC direct KSLC.
ii. To convert FPMN to VSI:
(a) A climb out speed of 180 KIAS = 3 nautical miles (NM) per minute.
(b) 3 NM/min * 200’/NM = 600’/min or 600 VSI at 180 KIAS.
b. Upon contact with clearance, you are cleared “as filed, to 15,000 feet.”
c. In this case, takeoff, fly direct to GJT, then V134 to FFU, etc…
4. Visual Climb Over the Airport (VCOA).
In a VCOA, the pilot is responsible for climbing VFR above the airport to a predetermined
altitude, then proceed outbound on an IFR flight plan. These clearances are usually left to the
smaller airports, which do not possess a DP or approach control radar to provide vectors upon
departure.
Example: “Navy 10, climb in visual conditions so as to cross the Beatty airport Southbound at
or above 6000’, then climb via the Beatty Three Three Zero to the Beatty VOR, then as filed,
climb and maintain 15,000 feet.”
INAV DEPARTURE PROCEDURES 4-3