Regulations Governing Licences and Ratings for Airmen Article 87

Pilots-aircraft or helicopter may engage in operations under IFR only after being granted the instrument rating. The instrument rating holder’s yearly training program and proficiency flight check shall provide instrument flight subjects. The instrument rating holder who failed the annual flight check shall be suspended from the privilege of piloting under IFR and "restricted to VFR only" shall be annotated on the holders rating certificate. Unless satisfactorily passing recheck, the failed instrument-rating holder may not engage in instrument flight.The instrument-rating check or added rating shall include the ability to operate multi-engine aircraft solely by reference to instruments with one engine inoperative, or simulated inoperative.