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sid.xml

The sid.xml file is used to define the available SIDs used by the “DCL” function (Datalink Clearance). DCL uses this dataset to find the best match for a departure clearance based on the Flight Plan and the current airport ATIS.

The sid.xml file is located in the fir/ directory

Attribute	Format	Remarks
Root Element	sids
Element	airport
icao	string	ICAO 4 letter airport ICAO designator

Attribute	Format	Remarks	Mandatory	Default
Element	sid
id	string	SID id in ICAO format	yes
transition	string	SID transition id	no
short	string	short name (used in labels, flight lists, …	yes
exit	string	exit waypoint of the SID	yes
rwy	string	departure runway designator	yes
cfl	integer	initial cleared flight level (CFL)	no	0
minrfl	integer	minimum requested flight level (RFL)	no	0
maxrfl	integer	maximum requested flight level (RFL)	no	999
begin	time	start hour when SID is available (UTC time, HHMM)	no	0000
end	time	end hour when SID is available (UTC time, HHMM)	no	2359
dow	string	Day Of Week (1=Monday, 7=Sunday)	no	1234567
wtc	string	Wake Turbulence Category: L M H J (ICAO doc 8643)	no	LMHJ
eng	string	Engine Type (ICAO doc 8643) J=Jet P=Propellor T=Turboprop	no	JPT
mineng	integer	minimum number of engines (ICAO doc 8643)	no	0
maxeng	integer	maximum number of engines (ICAO doc 8643)	no	9
acclass	string	Aircraft classification (ICAO doc 8643) Amphibian Gyrocopter Helicopter Landplane SeaPlane Tilt-wing	no	AGHLST
stripcolor	colorid	strip/flightlist text color (color id)	no
stripbg	colorid	strip/flightlist background color (color id)	no
gndcolor	colorid	ground label text color (color id)	no
gndbg	colorid	ground label background color (color id)	no
aircolor	colorid	airborne label text color (color id)	no
airbg	colorid	airborne label background color (color id)	no
intent	string	intention code (usage not yet defined)	no
text	string	free text with operational information about this SID	no

Query algorithm

The query used to find the appropriate SID is based on:

id = FPL ADEP
rwy = ATIS DEP RWY
exit = FPL route first waypoint
wtc contains FPL wake turbulence category
minrfl ⇐ FPL RFL (requested flight level)
maxrfl >= FPL RFL
begin ⇐ ETOD
end >= ETOD
dow contains current day of week
mineng ⇐ number of engines
maxeng >= number of engines
eng contains engine type
acclass contains aircraft classification

If the route starts with a SID it will be ignored, actually any word at the start of the route field containing a digit will be ignored. (this will ignore errors like NxxxFxxx at the start of the route)

The number of engines, engine type and aircraft classification are based on ICAO doc 8643.

the first found SID is used.

example

<sids>
    <airport icao="EBBR">
        <sid id="DENUT6C" short="DEN6C" exit="DENUT" rwy="25R" cfl="060"  minrfl="0" maxrfl="660" begin="0000" end="2359" dow="1234567" acclass="AGHLST" eng="JPT" mineng="0" maxeng="9" wtc="LMHJ"
    </airport>
</sids>

Example: HEAVY7A SID for heavy aircraft with 4 engines or more and requesting FL 190 or above on Sunday:

<sids>
    <airport icao="EBZZ">
        <sid id="HEAVY7A" short="HVY7A" exit="TOSEA" rwy="25R" cfl="060"  minrfl="190" dow="7" eng="J" mineng="4" wtc="HJ"
    </airport>
</sids>

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