The FF-3 fuel management computer is a 3 1/8” instrument intended for efficient monitoring of fuel related information for single or dual fuel tanks onboard small aircraft and related applications.

The FF-3 unit can connect to one or two fuel flow senders, one or two fuel level senders or both. Full functionality is available with both senders or only with a fuel flow sender using calculated fuel levels based on fuel usage. Differential fuel flow calculations are also supported for fuel return systems. Fuel injector systems are also supported.

Standard automotive fuel level senders can be used, even with odd shaped tanks due to a comprehensive, multi-point calibration system. Most fuel flow senders can be used and the K-factor of the sender can be entered into the system for simple calibration. MGL Avionics supplies a lightweight dual range fuel flow sender that is ideally suited for the FF-3. (The fuel level sender is sold separately.)

In addition, the FF-3 can be connected via the airtalk communication link to the Stratomaster Infinity ASI-1/ASX-1 or Velocity ASI-3/ASX-2 for automatic range calculation which is based on current fuel usage, fuel remaining and current airspeed.

Download FF-3 Manual (PDF)
Download Fuel Flow Sensor Manual (PDF)

MGL Offers a Three-Year Warranty

MGL Avionics offers a three-year limited warranty on all EFIS and single-instrument products in its product line. This warranty also applies to instruments purchased prior to thier announcement.
All MGL products are covered for three years against manufacturing or product defects, and the units will be repaired or replaced as necessary at no charge. One exclusion is the LCD screen, which, if damaged by the customer, will not be replaced free of charge.