SIA ENGINEERING revenue for the last year amounted to 1.09 B SGD, the most of which — 836.25 M SGD — came from its highest performing source at the moment, Airframe and Line Maintenance, the year earlier bringing 644.90 M SGD. The greatest contribution to the revenue figure was made by Singapore — last year it brought SIA ENGINEERING 718.26 M SGD, and the year before that — 514.01 M SGD.