? and where did I say there was a link between letter or C Checks and MSG-3? in fact I have said the opposite...
'...and without getting too involved you should be aware that operators will define their own Maintenance Schedule tailored to their operating/utilisation requirement which although accomodating the basic manufacturers recommendation may well alter the phasing or periodicity of check inputs considerably - in some cases doing away with a C Check altogether'
i.e. Operators can define their own Check periods (and call it a Letter Check, IL, Big Check, Little Check call it what you like...) Just because it is no longer referred to by a letter it is still a check input all the same
and then added
'...then we have MSG 2 and MSG 3' indicating the 2 different types of maintenance schedule which also have to be considered - the old and the new
and also...
'MSG-3 usually allows you to remove the C Check by re-allocating tasks. so does MSG-2 but not so easily...most MSG-3 users have elected to remove the C Check'
i.e. no letter checks on MSG-3 for many operators...which is what you are saying - suggest you compare an MSG-2 schedule for an older aircraft type and the new MSG-3 schedule for that type - and u will see the massive difference in flexability which is why MSG-3 allows you to do away with letter checks even on older aircraft - by reallocating tasks accordingly
Clearly you are reading something in to this that I dont see