Bombardier's share of the contract, which includes two years' maintenance, is worth $US 16m and covers the supply of Mitrac traction equipment for the trains.

The $US 155m rail link project involves constructing a 12km double-track branch, which will diverge from the Jakarta – Tangerang commuter line near Batu Ceper station before turning north towards the airport. Services will link the airport with Tanah Abang in central Jakarta and Manggarai in the south of the city, with a one-way fare of Rs 100,000 ($US 7.57).

The new line is expected to carry 57,600 passengers per day when it opens in 2017 and a new express service linking Soekarno-Hatta and Halim Perdanakusuma Airport is expected to start in 2019.