Druck ADTS 505 User Manual 3 - 17
K0260 Issue No. 8
3
3.7.2 Testing the Aircraft Pitot System
CAUTIONS:
1O
BSERVE ALL SAFETY PRECAUTIONS DETAILED IN THE AIRCRAFT MAINTENANCE MANUAL.
2W
HEN USING PT (PITOT ONLY), MAKE SURE THAT THE DIFFERENTIAL PRESSURE (QC) STAYS WITHIN THE
LIMITS OF THE ASI.
1. Remove the Pitot and static blanking caps and switch ON.
2. Connect the ADTS 505 to the Aircraft Pitot System.
3. Press SPEED/Qc and make sure the display shows Qc Leak Measure.
Note: To monitor the rate of change press RATE after pressing SPEED/Qc. The control rate of change
for airspeed is fixed at 300 kts/min.
4. If necessary, select Units in the Main Menu, press F1 [ft, kts, ft/min]. Press CLEAR/QUIT to go back
to the Main Menu.
5. If necessary change the limits in the Main Menu, press F6 [More], F1 [Limits]. After setting the limits,
press repeatedly CLEAR/QUIT to go back to the Main Menu.
6. Press LEAK MEASURE/CONTROL to select control mode and, using the numeric keys, set the control
aim. Press ENTER, the airspeed changes to the control aim the rate of change slows as it gets near
the control aim and does not "overshoot" the aim value.
7. Enter another aim or use the nudge facility to change the aim value. At the end of testing, press
GROUND to return to zero pressure.
8. On completion of testing, select GROUND and wait for the `Safe at Ground' message to be displayed,
see 3.7.8., refit the pitot and static blanking caps.
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