TM 1-1520-238-T-4 Change 9 5–59 5–23. TAIL ROTOR BALANCE – MAINTENANCE OPERATIONAL CHECK USING 5–23 AVA EQUIPMENT (cont) CAUTION Ensure proper blade weight retaining hardware is installed in the tail rotor blades. M58-0293-1 ON OFF LAMP CTRST DO HELP PRINT +/– 7 8 9 4 5 6 0 1 2 3 F1 F2 F3 F4 SCIENTIFIC ATLANTA^– STEWART HUGES RADS–AT VERSION 6.01 06–JAN–92 12:21:19 RETURN OR GO BACK THROUGH MENU (SEE TEXT) GO FORWARD OR INSERT A MENU SELECTION CURSOR KEY TO POSITION INVERSE VIDEO F1, F2, F3, F4 SOFT FUNCTION KEYS FOR MULTIPLE FUNCTIONS (SEE TEXT) KEYPAD TO ENTER NUMERICAL DATA POWER ON/OFF DISPLAY WINDOW QUIT LABEL Aircraft Type ? Tail Number ? Flight Plan ? Flight I.D. ? [DO] – Select Highlighted Item [QUIT] – Clear Highlighted Item MEASURE DIAGS MANAGER DISPLAY Figure 5–26. CADU Display and Keypad 1. PERFORM TAIL MEASUREMENT a. Operate aircraft at 100% Nr, flat pitch. b. Turn DAU ON. c. Turn CADU ON. d. Press QUIT on the CADU until all selections are underlined. NOTE To provide an accurate measurement, ensure tail rotor pedals are centered (flat pitch) during ground run. e. Use cursor keys to highlight Aircraft Type, then press DO. f. Use cursor keys to highlight AH64, then press DO. g. Tail Number is highlighted. Press DO. h. Use cursor keys to highlight a tail number or enter a new one (up to seven digits), then press DO. i. Flight Plan is highlighted. Press DO. j. Use cursor keys to highlight tail. Press DO.