And of course the Theoretical training given in App2 to JAR-FCL 1.380 and AIC 47-2004 White 102
http://www.nats-uk.ead-it.com/aip/cu...4_W_047_en.pdf
1 The aim of this course is to train aeroplane licence holders with more than 300 hours as pilot of aeroplane to the level of proficiency necessary for the issue of a CRI(A) rating for single engine aeroplanes. The course shall be designed to give adequate training to the applicant in theoretical knowledge instruction, flight instruction and synthetic flight instruction in order to instruct for any single pilot single engine aeroplane class or type rating for which the applicant is qualified (see JAR FCL 1.380)
TEACHING AND LEARNING
2 An approved CRI(A) Teaching and Learning course shall comprise not less than 25 hours. Pilots holding or having held one of the following ratings credited for the CRI(A) Teaching and Learning part of the CRI course:
FI(A), IRI(A), TRI(A), SFI(A), STI(A), MCCI(A)
FI(H), TRI(H), IRI(H), SFI(H)
There are no grandfather routes as no such qualification existed prior to JAR-FCL.