Flight 175 is the 31st Ariane 5 launch and the first in 2007. An ARIANE 5 ECA (Cryogenic Evolution type A), the most powerful version in the ARIANE 5 range, will be used for this flight.
This will be the 27th commercial mission for Ariane 5. Launcher 535, the 27th production phase Ariane 5, is the first of the 30 PA contract launchers, for which Airbus Defence and Space is production prime contractor. 535 is consequently the sixth complete launcher to be delivered to Arianespace, integrated and checked out under Airbus Defence and Space responsibility in the Launcher Integration Building (BIL).
In a multi-payload configuration using the SYLDA 5 "A" (6.4 m high) system and a long pattern fairing (total height: 17 m), the launcher is carrying a British military telecommunications satellite, SKYNET-5A in the upper position, and an Indian one, INSAT-4B in the lower position.