BGA Callsign Coding
===================
 BGA112A
 |  ||||- Last letter of Aircraft Registration
 |	|||- Destination
 |	||- Departure
 |	|- Flight of day on this route
 |- Company

So in this example it is a Beluga, first flight of the day, from Toulouse to Saint Nazaire, with F-GSTA

To create a valid BELOUGA callsign for a given flight, it is only necessary to know from where to where the
flight it supposed to go, how many flights were already performed on the day and which aircraft is to be used.
The Beluga XL are not yet set to service, how their callsigns might be generated, is still to be evaluated and
needs further observation.

AIB callsign for test flights prior to active service.

BGA Airport Coding
------------------

ICAO	IATA	City					Number
----	----	----					------
LFBO	TOU 	Toulouse 				1
LFRZ	SNR		Saint Nazaire			2
EDHI	XFR		Hamburg Finkenwerder	3
EGNR	CEG		Chester					4
EDDW	BRE		Bremen					5
LETO	TOJ		Madrid Torrejon			6

Aircraft Registration
---------------------

Aircraft type		Registration
-------------		------------
A3ST Beluga			F-GSTA
A3ST Beluga			F-GSTB
A3ST Beluga			F-GSTC
A3ST Beluga			F-GSTD
A3ST Beluga			F-GSTF

A337 Beluga XL		F-WBXL
A337 Beluga XL		F-GXLH
A337 Beluga XL
A337 Beluga XL
A337 Beluga XL
A337 Beluga XL