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Overview
CRI class extension overview
Your Class Rating Instructor privileges are restricted to the class rating in which the instructor assessment of competence with Flight Instructor Examiner was taken. The aim of the CRI class extension training course is to extend your CRI privileges from multi-engine to single-engine single-pilot aeroplane and vice versa.
The validity of the your Class Rating Instructor certificate stays with your former validity - 3 years. To revalidate your CRI you have to comply with FCL.940.CRI.