[1]Important legal notice | 61989C0074 Opinion of Mr Advocate General Lenz delivered on 14 February 1990. - Commission of the European Communities v Kingdom of Belgium. - State aid - Recovery - Failure to implement. - Case C-74/89. European Court reports 1990 Page I-00491 Pub.RJ Page Pub somm Opinion of the Advocate-General ++++ Mr Advocate General Lenz delivered his Opinion on 14 February 1990 . (*) He proposed that the Court should : ( i)declare that by not recovering within the prescribed period the aid in the sum of BFR 725 million granted to a synthetic fibre producer, thereby failing to comply with the Commission Decision of 30 November 1983 on the proposal of the Belgian Government to grant aid to a synthetic fibre producer, the Kingdom of Belgium has failed to fulfil its obligations under the EEC Treaty; ( ii)order the Kingdom of Belgium to pay the costs . (*) Original language : German . References 1. http://europa.eu.int/eur-lex/lex/en/editorial/legal_notice.htm