Singapore - The Singapore Flyer, the city-state's giant observation wheel, was restarted at Monday mid-morning after obtaining a Public Entertainment Licence late Sunday night.

The authorities have approved a certification report submitted by internationally technical service provider TÜV SÜD, which conducted days of rigorous testing of the huge wheel's newly installed backup system, a statement from the Singapore Flyer said.

An independent secondary drive system has been installed at the Flyer, Singapore's latest tourist attraction.

A fire on December 23, 2008 damaged the Flyer system, leaving 173 passengers stranded inside the 28 capsules of the 168-metre-tall observation wheel for around six hours. (dpa)