Continental Motors has decided to increase the time between engine overhauls (“TBO”) by 200 or 400 hours on certain newer engine models. In a revision to Service Information Letter SIL98-9B, dated April 8, 2013, the company set forth its specific guidelines regarding the increased TBOs. Generally, however, the new limits will extend to certain engines manufactured beginning in February 2012 and with serial numbers of 1006000 or higher.