Dynon Avionics SkyView HDX - FUEL (Fuel Computer Control); Fuel Computer

Transponder Operation
6-6 SkyView HDX Pilot’s User Guide – Revision B
To exit the Lean mode, press LEAN again; the EGT/CHT display then returns to its normal state
and the LEAN icon indicates the feature is turned off.
For best results, lean carefully by making small adjustments and allowing some time for
temperatures to stabilize before leaning further. In addition to the EGT temperatures, you can
also watch the fuel flow rate and CHT temperatures. Carefully read and follow your engine
manufacturer’s leaning recommendations for best performance.
On some engines, when given the proper set of inputs, the ENGINE can also calculate lean-of-
peak or rich-of-peak operation in real time. To do this, the ENGINE needs access to OAT, MAP,
RPM, Altitude and fuel flow, engine horsepower setting, engine redline setting, and be used on
a normally aspirated Lycoming or Continental engines. This information is based on Lycoming
and Continental power charts and is updated in real time. The leaning information has four
states: LOP, ROP, and PK (Peak), and PK? (Peak Unknown). This information can be used to
determine when it is safe to lean the engine, and if the current operating state is near peak or
not. While this information is based on published charts, you should independently verify via
manual leaning that this data matches your install and engine. If the ENGINE does not have all
of the information it needs to calculate the peak state, PK? (Peak Unknown) is shown.
FUEL (Fuel Computer Control)
The FUEL icon on the ENGINE menu provides access to a menu for adjusting the fuel computer.
See the dedicated Fuel Computer section for details on fuel computer operation.
Fuel Computer
The Fuel Computer is a built-in feature which monitors fuel consumption as determined by an
optional fuel flow sensor and maintains continuously updated computations of various fuel
management parameters.
By using the fuel flow sensor data and GPS information together, SkyView HDX can generate
and display different info items that pertain to your aircraft’s computed fuel state and
performance. They are available for placement on the Engine Pages via the Screen Layout
Editor. For more information regarding the Screen Layout Editor, reference the SkyView Classic
/ SE / HDX System Installation Guide.
The Fuel Remaining, Fuel Used, Fuel Efficiency, Fuel at Waypoint, and Range values
are not directly measured. These values are calculated based upon measured flow
rates and user input of fuel quantity. Do not use these values as primary indicators.