ISOLATING/MONITORING OTHER VIBRATIONS USING AVA EQUIPMENT (cont)
(12) Press DO when aircraft is stable and ready for date collection. Press DO again to take measurement
(ACC 1, ACC 2, ACC 3, ACC 4, VIBLAT, VIBVRT, or select range for FFT). The flight plan will
measure data on one channel at a time. Perform this operation for each desired channel. AVA will
acquire vibration data at each selected test state and then return to selection menu.
(13) If all of measurements were completed, press DO on finish, then press DO on main menu. If all of
measurements were not taken and the other measurements are not desired, press QUIT and then
select SAVE and Exit and press DO.
(14) Enter the Display mode by pressing F2. Select One Test State and press DO. Select desired channel
and press DO. Review each of the spectrums measured for any unusual vibrations as described in
(15) Make appropriate logbook entries and remove Aviation Vibration Analysis kit (TM 1-1520-238-23).
END OF TASK