Claim: Mohamed Sedky Mahmoud (the first Egyptian aviation instructor) was invovled in Helwan HA-300, which was a single engine, delta-wing, light supsonic inceptor aircraft developed in Egypt in the 1960s.
Evidence: He became the first Egyptian instructor in 1936, later became the lead aviation instructor and headed the High Aviation School in 1944. Air Marshal M Sedky Mahmoud was involved in the development of the Helwan HA-300. The Helwan HA-300 (Arabic: حلوان ٣٠٠‎) was a single-engine, delta-wing, light supersonic interceptor aircraft developed in Egypt during the 1960s.