The launch of a Proton launch vehicle with the Nimiq 4 satellite was postponed 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.
