0069 00TM 1-6625-724-13&P0069 00-18screen of the AVA) is to be subtracted from the initialmeasurement.e. The target measurement for one station is equal to the initial station measurement (taken above), plus/minusthe table correction. Perform the same calculation for all six stations.CAUTIONMaximum trim tab bending adjustment per flight forone station is 0.030 inch in each direction from thecurrent setting. Do not over-bend trim tab.Trim tabs should be bent uniformly at all sixstations.f.Place center of the trim tab-bending tool over the measuring station. See figures 10 & 11.g.Using a very light effort (to acquire a feel for the force needed to bend trim tab), bend tab. Check themagnitude of adjustment using the trim tab measuring plate and adjust future bending effort based on thisexperience. Repeat adjustment until the TARGET tab setting is obtained for that station. Perform thisprocedure for all six-tab stations.h.Annotate the new trim tab measurements on the trim tab position measurement record. A sample form isshown on figure 12, but each blade should have a measurement record in the historical forms (green book).i.Remove tab adjustment tools and perform limited test flight. Fly the aircraft and re-check the 1/REV vibrationsat the required flight conditions.
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