Hi all,
There seems to be some confusion here with Six Sigma and Lean. Lean in my opinion looks at understanding a process and optimising it to remove waste. Six sigma on the other hand is a statistical tool used to reduce the variation in a product or service. The two can be linked but in my opinion are separate issues i.e. implement a lean production system and then use the statistical tools from Six Sigma to optimise it.
From a maintenance point of view, lean does have a place especially for light checks as in general they do follow a drum beat. Heavy checks on old aircraft are a different story however. Once the lean checks are in place you could conceivably use six sigma to look at methods to reduce ground time etc..
Just my two cents though...
Cheers,
P2C.