Copyright © 2015  Grand Rapids Technologies, Inc.

Electronic Flight Instrumentation for Experimental Aircraft Since 1991

Automatic Logbook

Every time the EFIS records an airspeed greater than 25 knots, a logbook entry is generated. This can be handy for supplementing your pilot logbook and tracking flight time and fuel consumption.

What does it look like?

Access the MAP page on a WS/HS/HX Horizon or Sport system and press NEXT until you see a LOG BOOK softkey. (Just press MORE on HXr.)

A screen appears that lists up to 200 flights, with the most recent flight on the top of the list. The following functions are automatically recorded:

Date- Date of the flight as recorded by the EFIS

Orig - Originating airport/GPS waypoint

Dest- Destination, or last GPS waypoint

Hrs- Flight time as recorded on the EFIS. NOTE: This starts when airspeed reaches 25 knots and ends when airspeed falls below 25 knots. It does not record EIS tach time. See below…

Fuel- Fuel used during the trip. Calibrated fuel flow sender required for accurate readings.

Dep- Departure time

Arr- Arrival at destination

Entering More Data

You can also enter data that is not automatically collected by the system. To access these, press the EDIT softkey, followed by a softkey listed below. Turn the right knob to enter the data.

Eng-Hr- Engine hours- Enter tach or Hobbs time


Pas- Number of passengers

FA- Fuel added

OA- Oil added

Saving and Viewing Your Logbook

Note that the Logbook files must be downloaded separately from other data; They are not saved by saving EFIS Settings or Demo recordings. Only 200 logbook flights are saved; when 200 flights are reached, the EFIS will begin overwriting the oldest entries.

To save your logbook files:

  1. Insert USB drive into the USB port, if it is not already installed.
  2. Press Download softkey.

The file will be saved as LOGBOOK.CSV and is viewable and editable using a spreadsheet program such as Microsoft Excel.