Belgium has joined Canada and Germany in the uncertainty about their spots on the 2010 formula one calendar.
Canada is yet to agree a contract with Formula One Management, and the Hockenheim circuit in Germany is still negotiating after saying it was no longer willing to absorb annual million euro losses.
Belgium also has a spot on next year's race schedule, but it emerged on Wednesday that the famous and popular Spa-Francorchamps circuit has had its operating license revoked by a local administrative court.
The license has been rescinded until 2026, upon request by a board of local residents complaining about noise, according to the Belgian newspaper Le Soir.
It is believed that the Spa operators were ordered to submit an environmental impact study, which has been denounced by the court as "seriously inadequate and incomplete".
"The whole viability of the circuit may be questioned," circuit director Pierre-Alain Thibaut, who vowed to contest the decision, said.
