EFD1000 E5 Dual Electronic Flight Instrument (EFI) Install Manual
DOCUMENT # 900-00041-001
PAGE 224-226
REVISION D
© Copyright 2019 Aspen Avionics Inc.
Post EA100 Installation Operational Check
a)
Under VFR conditions fly the aircraft to a safe maneuvering altitude. Level and trim the
aircraft for coordinated flight. Perform all tests (except the approaches) at cruise speed.
b)
Engage the autopilot in pitch and roll mode (Attitude Mode or HDG mode for the Century) and
verify the aircraft produces no oscillations.
c)
Engage HDG and ALT mode and verify the HDG bug centers under the lubber line. If the HDG
bug is not under the lubber line verify the slip/skid indicator is centered. If the slip/skid
indicator is centered then the autopilot roll null “roll centering” is out of adjustment. If the
slip/skid indicator is out of center then adjust rudder trim to center.
d)
Turn the HDG bug 90 degrees left. During the turn record the maximum bank angle. Verify
the aircraft does not lose more than 100ft during the turn. Verify the autopilot rolls out on
the HDG bug with little overshoot.
e)
Turn the HDG Bug 90 degrees right. During the turn record the maximum bank angle. Verify
the aircraft does not lose more than 100ft during the turn. Verify the autopilot rolls out on
the HDG bug with little overshoot.
f)
If it applies, rotate the autopilot Roll knob left and right and verify the bank angle are within 2
degrees of the pre EA100 Operational Check.
g)
Using the Pitch Modifier (pitch rocker switch) press the “up” side of the switch to initiate a
climb attitude of about 5 degrees. Verify the aircraft climbs and maintains a consistent 5-
/- 2-degree attitude with no oscillations.
h)
Using the Pitch Modifier (pitch rocker switch) press the “down” side of the switch to initiate a
descent attitude of about 5 degrees. Verify the aircraft descends and maintains a consistent
5-/- 2-degree attitude with no oscillations.
i)
Perform an ILS approach and note the performance in the lateral and vertical (if Glide Slope
equipped) axes. Verify no oscillations.
j)
If the autopilot performance is similar to or better than that of the pre-install Operational
Check (and the pre-install Operational Check was satisfactory) then no further adjustments
are necessary. If the HDG bug did not center use the “roll centering” pot to correct this
condition. If the maximum bank angles or pitch angles were outside the maximum allowed
by the autopilot manufacturer then the autopilot must be aligned to the EA100 using the
manufacturer’s gyro alignment procedure.
NOTE
Autopilot adjustment in accordance with the autopilot manufacturer’s instructions may be
necessary to correct HDG Bug out of center or aircraft tracking off course conditions. The
“roll centering pot” adjuster tool should be available. For best results, determine the location
of the roll centering pot prior to the Operational Check so that it may be accessed if needed.
NOTE
If the Operational Check revealed a fast pump of the yoke in pitch of approximately 1 second per
cycle then use Tech Note TN2013-02 and set the “PITCH SCALE” from 0.5 to “0.0”
