Services from the Anik F1 satellite could be affected as early as 2005 due to a loss of power caused by a generation problem. Anik F1 is one of six Boeing 702 spacecraft in orbit that incorporate a defective solar array system and are losing power more rapidly than expected. The problem, which has been fixed on new 702 spacecraft, involves fogging of solar-array concentrator panels. Other satellites affected are the two XM Radio satellites, Panamsat's Galaxy 11 and PAS 1R and the 702-derived Thuraya 1 spacecraft.
Source: Flight International