TM 1-6625-724-13&P0069 000069 00-25h. Tail Number is highlighted. Press DO.i. Use cursor keys to highlight a tail number or enter a new one (up to seven characters), then press DO.j. Flight Plan is highlighted. Press DO.k. Use cursor keys to highlight TAIL. Press DO.l. Enter the Measure mode by pressing F1. Verify that Test State FPGTL is highlighted.m. Press DO when the aircraft is stable at the highlighted selection. Verify that the aircraft is at the required TestState and press DO again. The AVA will acquire balance data and return to the selection menu.n. After the measurement is completed, press DOES on Finish, then press DO on Diagnostics. If measurementsare within specified limits, press QUIT to Main Menu.o. If measured values exceed manufacturer's desired levels, press the DO key to enter the DIAGS mode.Perform all corrections displayed on the diagnostic screen as outlined in procedure 5. If alterations of thesecorrective actions are desired, use the Edit Adjustables option and turn off adjustments not wanted. Do notuse a partial set of the adjustments.PROCEDURE 5: CORRECTING TAIL ROTOR BALANCENOTEIf adding weight, weigh attaching hardware using a gramscale and add the balance weights as required to attainpredetermined weight. Heaviest total weight is 113.5grams (4 oz.) per bolt hole or a maximum of 227 grams(8 oz.) per quadrant. Ensure screw has at least 1-1/2threads exposed beyond nut.If removing weight, place all existing weights (only fromquadrant being adjusted) and attaching hardware ongram scale and remove balance washers as required toattain predetermined weight.Ensure AN960C416 washers are between balancewashers and retention plate to prevent contact betweenbalance washers and radius on retention plate.Correction display refers to the quadrants as TARGET(the quadrant that follows the blade with the tape on it),2, 3 and 4, in direction of blade rotation.a.Install attaching bolt, washers, nut and balance weights to assigned quadrant as shown in figure 15. Installhalf of the weights under the bolt head and the remaining weights under the nut.b.Torque nut from 90 to 100 inch-pounds.c.Repeat task 6 and verify results.d.Make appropriate logbook entry indicating that tail rotor balance was completed and is within limits.e.Remove test equipment.
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