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Figure 55 Unit Safe at Ground
C. LEAK TESTING - Combined ALT & CAS (using ATP Leak Test Profile)
The ATP Leak Test Profile feature provides an automated process for Leak Testing. Once
a profile is created and saved, it can be used to automate the Leak Test process allowing
the user to perform other tasks while the ATP Leak Test is running.
1. For detail explanation of the ATP Leak Test capability and parameter field
descriptions, reference section B-3.30 “Using Method 2 ATP Leak Test”.
2. Verify the DPS1000 including hoses and the Aircraft Pitot System Leak Test and
Static System Leak Tests have been completed.
Note: It is always recommended that prior to performing any testing the DPS1000
Test Set and hoses should be leak tight. The reality is every Test Set and
hose configuration has some level of leakage present, a confirmation of the
existing leak rate is important to establish prior to trying to determine the leak
rate of the aircraft or instruments being tested.
3. Verify if the alternate pneumatic system(s) (co-pilot, standby auxiliary, etc.)share the
same pneumatic lines, if so they must be sealed.
4. Ensure the aircraft altimeter has the baro set at 29.92 inHg (1013.25 mbar).
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