From International Launch Services (ILS) comes word that the launch of a Proton launch vehicle with the Nimiq 4 satellite was postponed for 24 hours. This halt was required in order to replace an avionics unit on the first stage of the Proton M rocket, which showed anomalous signature during routine testing. The faulty component will be replaced and undergo thorough integrated retest prior to flight. Khrunichev State Research and Production Space Center and International Launch Services plan to make another attempt at 3:48 on September 20th, local time in Baikonur (17:48 EDT September 19). The satellite is being launched for Telesat.