Important notice, Must read, Page 3 of 4 – Electronics International MVP-50P User Manual

Page 4

Important Notice

***** MUST READ *****

Page 3 of 4

Fuel Level Accuracy Limitations:

The accuracy limitations of the MVP are listed below. It is the pilot/owner’s obligation to make

It is the pilot/owner’s obligation to make

anyone flying the aircraft aware of these limitations.

1. Angle of Attack -

1. Angle of Attack - The MVP must be calibrated with the aircraft in a cruise angle of attack. If the
aircraft is in an angle of attack other than cruise, the MVP may display inaccurate fuel levels (depend-
ing on the mounting location and type of sensor used). If your aircraft does not sit at a cruise angle of
attack when on the ground, it may not display accurate fuel levels. Test your aircraft at different

Test your aircraft at different

angles of attack to determine how the MVP fuel level readings are affected.

2. Full Fuel Readings -

Full Fuel Readings -

Full Fuel Readings - As a tank is filled the fuel sensor may be unable to detect the fuel entering

the upper corners of the fuel tank. If this is the case with your sensor, the MVP may display fuel levels
lower than the actual fuel in the tanks when the tanks are full. When the fuel level drops to a point
where the fuel sensor starts to detect a change, the displayed fuel level should be accurate. Check the

Check the

accuracy of your system by comparing the displayed fuel levels on the MVP to the fuel

accuracy of your system by comparing the displayed fuel levels on the MVP to the fuel
levels listed in the flight manual at each fill up.

levels listed in the flight manual at each fill up.

3. Low Fuel Readings -

3. Low Fuel Readings - Do not rely on the MVP to determine the fuel level in the tank

Do not rely on the MVP to determine the fuel level in the tank

for an indicated tank level below 1/8

for an indicated tank level below 1/8. You should always fly the aircraft in such a manner as to
at least maintain the FAA minimum fuel requirements in the aircraft at all times. Depending on the

Depending on the

mounting location and type of fuel sensor used, the MVP may not be able to accurately

mounting location and type of fuel sensor used, the MVP may not be able to accurately
measure the last few gallons of fuel in the tanks.

measure the last few gallons of fuel in the tanks.

4. Improper Calibration -

4. Improper Calibration - If the MVP has not been properly calibrated it will not display accurate
fuel levels in the tanks. It is important to verify the accuracy of the MVP. Always cross check your

Always cross check your

measured fuel levels in the tanks with the readings on the MVP before each flight.

5. Poor Connections -

5. Poor Connections - Poor connections between the wires leading from the EDC to the fuel
sensors can become intermittent with age. An intermittent connection most likely will show up as
wandering or inaccurate readings on the MVP. Always cross check your measured fuel levels

Always cross check your measured fuel levels

in the tanks with the readings on the MVP before each flight.

6. Defective Fuel Level Sensors -

6. Defective Fuel Level Sensors - Fuel sensors can become intermittent or change resistance

with age. It is not uncommon to find intermittent problems even in new resistive sensors. An intermit-
tent problem with a fuel sensor most likely will show up as wandering or inaccurate readings on the
MVP. Always cross check the measured fuel levels in the tanks with the readings on the

Always cross check the measured fuel levels in the tanks with the readings on the

MVP at each fill up.

If you ever find an inaccuracy issue or any other problem with a fuel level display

on the MVP, disable the fuel level display (see the “Redlines, Limits and Color Setup”

on the MVP, disable the fuel level display (see the “Redlines, Limits and Color Setup”
screen). This will alert anyone flying the aircraft to the condition of this display.

screen). This will alert anyone flying the aircraft to the condition of this display.