This is my first post - thanks to everyone over the 73 pages for an informative read.
I'm interested in the latest revelation about the two types of second stage gears - it raises these questions:
1. Did the two types exist prior to the REDL accident and if so why was analysis of the differences not a feature of the AAIB investigation? Which type was REDL using?
2. If the second type post-dated the REDL accident, why was it introduced, and if it was a quiet response to internal AH findings with respect to REDL, why was the immediate retrofit of the second type not mandated?