Assertion: stirrup | /r/CapableOf | serve as a flight commander
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text: Promoted to squadron leader on 1 January 1980, Stirrup was serving as a flight commander on No. 226 Operational Conversion Unit which was based at RAF Lossiemouth in March 1983: his duties centred around the instruction of trainee pilots on the SEPECAT Jaguar and, on 7 March 1983, Stirrup was carrying out a student progress check from the rear seat of his aircraft when they suffered a serious bird strike.