BAIKONUR COSMODROME, Kazakhstan, Sept. 17, 2008 – The launch of a Proton launch vehicle with the Nimiq 4 satellite was postponed today for 24 hours to replace an avionics unit on the first stage of the Proton M rocket which showed anomalous signature during routine testing.

Khrunichev State Research and Production Space Center and International Launch Services plan to make another attempt at 3:48 on 20 September local time in Baikonur (17:48  EDT 19 September). The satellite is being launched for Telesat.

The delay was called after a component malfunction was detected in the LV control system during preflight testing. The faulty component will be replaced and undergo thorough integrated retest prior to flight.

For updated status, please check the ILS website, www.ilslaunch.com, or the ILS U.S. domestic Launch Hotline at 1-800-852-4980.