Revision: 2.3
Date: 10/30/20
F0-3
Stall Testing:
Approach each stall slowly with a deceleration rate of not more than 1 knot per second while
holding the wings level and keeping the ball centered. Allow the speed to bleed off until you feel a
slight buffet. Note the airspeed and recover with a smooth forward movement of the stick as
power is added.
Stall Warning Adjustment:
The stall warning tone should activate 7 kt (±2 kt) prior to the actual stall break. If the warning
comes on too soon then the vane should be adjusted down slightly. If the warning comes on too
close to the stall, then the vane should be adjusted leading edge upward.
(iS Only) Eco Stop Adjustment:
The Rotax 912iS engine offers an “Eco” mode which results in significantly reduced fuel
consumption at a cruise power setting. The RV-12iS (when equipped with an iS engine) has an
adjustable “Eco Stop” feature in the throttle quadrant to help the pilot quickly find the upper
throttle limit of Eco mode.
To test the Eco Stop, establish level flight at a density altitude of 7500 ft. Advance the throttle to
the Eco Stop and allow the airspeed to stabilize while maintaining altitude. Check the EFIS
indication to ensure the engine is operating in “Eco” mode.
If the engine is operating above the “Eco” mode, adjust the Eco Stop to a lower throttle position
and retest. Small adjustments to the Eco Stop position can have a noticeable effect.
Fuel Flow Calibration:
(iS) Fuel flow calculations are done within the Engine Control Unit and have no means for user
calibration. It is still a good idea to check this information against actual fuel used to gain
familiarity with the system.
Summary of Contents for RV 12iS
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