Diamond Aircraft DV 20 E 2022, Airplane Maintenance Manual

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AIRCRAFT
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DV 20 E AMM
Page 204
15 Mar 2022
34-10-00
Doc # 4.02.25
Rev. 2
C. Low Range Static Leak Test
Detail Steps/Work Items Key Items/References
(1) Obey the precautions at the beginning of this
subject.
(2) Connect the pitot-static leak-tester to the pitot-
static probe.
(3) Apply a partial vacuum to the static port until
you get a pressure altitude of 1000 ft above the
ambient pressure altitude.
Note the altitude.
(4) Let the pressure stabilize.
(5) Monitor the system pressure. The pressure loss must not be more
than 100 ft/min.
(6) Compare the test-equipment altimeter and the
airplane altimeter.
Table 1: Altimeter Indication Error
Altitude Permissible Error
Sea level. ±20 ft.
4,000 ft. ±35 ft.
8,000 ft. ±60 ft.
12,000 ft. ±90 ft.
16,000 ft. ±110 ft.
20,000 ft. ±130 ft.