Sandel ST3400 - Air Data Input Tests

7.2.12 AIR DATA INPUT TESTS
Follow Aircraft Manufacturers instructions and connect Pitot/Static test box to the
aircraft Pitot/Static system. Select ST3400 to Maintenance Page 3&4: AIR DATA
monitor the #1 and #2 Air data inputs.
Set the Pilot’s altimeter to field elevation.
SIGNAL FUNCTION TOLERANCE RECORD
VALUE
PASS FAIL
Field Elevation CBA1 Verify altitude between
Pilot’s Altimeter and TAWS
is within +- 75 Feet
Adjust Pitot/Static
Test box to 1,000 ft
over Field Elevation
CBA1 Verify altitude between
Pilot’s Altimeter and TAWS
is within +- 75 Feet
Adjust the Pitot/Static Box for a climb and descent as required (Do not exceed
aircraft VSI).
SIGNAL FUNCTION TOLERANCE RECORD
VALUE
PASS FAIL
Adjust Pitot/Static
Test box to 1,000,
2,000 and 4,000 fpm
climb.
BR1 Verify vertical speed
readings between Pilot’s
VSI and TAWS is within +-
200 FPM
Adjust Pitot/Static
Test box to 1,000,
2,000 and 4,000 fpm
descent.
BR1 Verify vertical speed
readings between Pilot’s
VSI and TAWS is within +-
200 FPM
NOTE: If using Analog Baro Rate input this tolerance is increased +/- 400FPM
Adjust the Pitot/Static Box for field elevation.
SIGNAL FUNCTION TOLERANCE RECORD
VALUE
PASS FAIL
Adjust Pitot/Static
Test box to 120,
160 and 220 knots.
TA1 Verify airspeed readings
between Pilot’s airspeed and
TAWS is within +- 25 knots
Field Temp IAT OR
OAT
Verify temperature within
+-5 degrees of ambient
NOTE: Press “VALUE” softkey and then UP/DOWN softkeys to access IAT
or OAT.
82002-IM-L ST3400 INSTALLATION MANUAL 7-23