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Values

Qualifier for following centre identifier

Code/Flag Figure	Description	Status
0	Reserved	Operational
1	ATS (Air Traffic Service) unit serving FIR (Flight Information Region)	Operational
2	FIR (Flight Information Region)	Operational
3	UIR (Upper Flight Information Region)	Operational
4	CTA (Control Area)	Operational
5	VAAC (Volcanic Ash Advisory Centre)	Operational
6	MWO (Meteorological Watch Office) issuing SIGMET	Operational
7-14	Reserved	Operational
15	Missing value	Operational