I have just completed studying TNS 199 as now modified and I really feel we should say thank you to Mark Miller and all the team at de Havilland for resolving this issue. It has taken a substantial amount of time to persuade the powers that be of the acceptability of these changes and I have had a little knowledge of the laborynthine process which they had to negotiate to achieve this result. We now have what seems to me to be a sensible and practical maintenance routine for this component.
Hopefully, this will be the first of a number of improvements that will benefit all of us and our chipmunks.
John Henderson
