MSG-3 usually allows you to remove the C Check by re-allocating tasks...as does MSG-2 but not so easily...most MSG-3 users have elected to remove the C Check (but u dont have to, as user of MSG-3 schedule you have far more operator flexability as to Check and Task allocation in accordance with yr operational/utilisation needs and scenario...the old MSG-2 schedules were far less flexable but still could be C Check less if u wished and planned as such
To elaborate would go to pages...suggest you read the ATA MSG-3 concept document 'ATA MSG-3' as to more in depth detail on the core concept/principals differences between MSG-2 and MSG-3 methodology...it is available from the ATA website I believe
Or free here
http://www.nw.faa.gov/seattleaeg/AEGDOCS/msg32003.1.pdf