TM 1-6625-724-13&P
0069 00
0069 00-41
PROCEDURE 3: PERFORM MEASUREMENTS
NOTE
Tape placement may be verified by applying aircraft
power, then rotating the shaft by hand until the tape
passes beneath the sensor. A red LED will illuminate on
the back of the sensor if a return signal from the tape is
present.
NOTE
No. 2 engine must not be running during the No. 1
engine output shaft vibration level check. No. 1 engine
must be run at 100% Nr for five minutes prior to the
measurement being taken.
a. Place the DAU power switch in the ON position.
b. Turn on CADU.
c. Apply 28 Vdc power to the DAU
e. Press QUIT until all the selections on the Main Menu are undefined.
f.
Start and run No. 1 engine at 100% Nr, flat pitch.
g. Use cursor keys to highlight Aircraft Type, and then press DO.
h. Use cursor keys to highlight UH-60, and then press DO.
i.
Tail Number is highlighted. Press DO.
j.
Use cursor keys to highlight a tail number or enter a new one (up to seven digits), then press DO.
k. Flight Plan is highlighted. Press DO.
l.
Use cursor keys to highlight ENG 1. Press DO.
m. Enter the Measure mode by pressing F1. Verify that Test State ENG_1 is highlighted.
n. Press DO when the aircraft is stable at the highlighted selection. Verify that the aircraft is at the required Test
State and press DO again. The AVA will acquire vibration data and return to the selection menu.
o. After the measurement is completed, press DO on Finish, then press DO on Main Menu.
NOTE
No. 1 engine must not be running during the No. 2
engine output shaft vibration level check. No. 2 engine
must be run at 100% for five minutes prior to the
measurement being taken.
p. Shut down No. 1 engine. Start and run No. 2 engine at 100% Nr, flat pitch.
q. Use cursor keys to highlight Flight Plan. Press DO.
r. Use cursor keys to highlight ENG 2. Press DO.
s. Enter the Measure mode by pressing F1. Verify that Test State ENG_2 is highlighted.
t.
Press DO when the aircraft is stable at the highlighted selection. Verify that the aircraft is at the required Test
State and press DO again. The AVA will acquire vibration data.
u. Shut down No. 2 engine
