Rev. 5
3-17
ANGLE-OF-ATTACK SYSTEM TEST
Tools
♦
Syringes - two req'd (35cc or similar)
♦
Vacuum hose (or soft plastic tubing)
♦
Modeling clay
After the AOA system has been properly calibrated in flight, this test is used to test the
AOA system plumbing integrity during every inspection and every time the wings are
removed and re-installed.
•
Using a 35cc syringe push plunger in to 7.5cc, hook-up syringe & vacuum hose to
pitot tube, turn-on EFIS, use syringe to slowly, carefully push air into pitot, look for
airspeed indication on EFIS, push-in syringe until 130 kt indicates then stop pushing-
in.
•
Using a second syringe push plunger in to 7.5cc. Use modeling clay to hook-up the
syringe and vacuum hose to the AOA port.
•
Pressurize the AOA port. Watch the EFIS AOA indicator. Increasing AOA port
pressure will cause the EFIS AOA indicator to move from green to red. Do not apply
more pressure than necessary to move the AOA indication into the red zone. Once
the AOA indication is in the red zone stop pushing in the syringe.
•
Move the left wing tip back and forth, as per the REAR SPAR DOUBLER
instructions in the WING/CENTER SECTION, while performing the AOA system leak
test to verify AOA system integrity.
•
The maximum allowable AOA system leak rate is less than full AOA indicator scale,
from red to green, in one minute.
•
If the AOA system does not hold test pressure for the required time inspect the
modeling clay to wing seal before inspecting other AOA system components. Inspect
and repair or replace any faulty AOA system components, as necessary. If faulty
components were replaced or repaired re-test the AOA system plumbing integrity.
PAPERWORK
•
Make the appropriate log book entries.
•
Save the completed checklist in the aircraft file.
NOTE:
T
HE
AOA
SYSTEM PLUMBING MUST PASS THIS LEAK TEST DURING EVERY
INSPECTION AND EVERY TIME THE WINGS ARE REMOVED AND INSTALLED
.
W
HEN PERFORMING ANY
AOA,
S
TATIC
,
OR
P
ITOT SYSTEM PRESSURE TEST ON A
D
YNON
S
KY
V
IEW SYSTEM IT IS REQUIRED TO BE AT
S
OFTWARE
V
ERSION
15.0.4
(
OR GREATER
)
AND ALL TESTING MUST BE PERFORMED IN THE
SETUP MENU >
HARDWARE CALIBRATION > ADAHRS CALIBRATION > PITOT/STATIC TEST MODE.
Summary of Contents for RV-12
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