New 912 Operators manual
In the just released January 2023 OM the table of revisions states chapter 4 is changed in its entirety, but there are change bars scattered about in the chapter 4 margins. However, when we reach the 4000 rpm ignition circuit checks in chapter 4 the permissible rpm drops are different than the Nov 2016 manual, but there is no change bar in the margin for this revised information. Is the 500 rpm drop per circuit/150 rpm difference between circuits a misprint or an update with no change bar in the page margin?