TASK 2 TRACK FWD AND AFT ROTORS (ON THE GROUND)
PROCEDURE 1: CONFIGURE AVA FOR GROUND RUN
a. Perform task 1, Test Equipment Installation/Checkout, procedures 1 through 6.
b. Operate aircraft at 100% Nr, and ground detent.
c. Turn on DAU.
d. Turn on CADU.
PROCEDURE 2: PERFORM GROUND TRACK MEASUREMENT
a. Press QUIT on the CADU until all selections show undefined.
b. Select CH47 under Aircraft Type menu.
c. Select proper tail number from previous selections in Tail Number menu or enter a new tail number (up to seven
d. Enter the Flight Plan menu and select GROUND.
e. Enter the MEASURE mode by pressing F1. Verify that FPG100 is selected.
f. Press DO when the aircraft is stable at the proper test condition. Re-verify that the aircraft is at the required
Test State and press DO again. The AVA will acquire track and vibration data and return to the selection
display when the system is ready for the next measurement.
g. After the measurement is completed, press DO on Finish, press DO on Diagnostics. If measurements are
within specified limits, press QUIT to Main Menu and proceed to task 3.
Evaluate the ability to use the recommended
adjustments. If modifications to the adjustments are
desired, enter the menu option Edit Adjustables. Make
the desired changes and press the DO key.
h. If measured values exceed manufacturers desired levels, press the DO key to enter the Diagnostics mode.
Evaluate the percentage improvements obtainable through further corrective action. Perform all corrections
displayed on the screen. Do not use a partial set of the adjustments.
Make corrective adjustments in accordance with TM 55-
i. If any adjustments have been made, perform procedure 2 again and verify the corrections.