Flytec 6040 * - Manual (Page 54)

Operation Manual FLYTEC 6040 GPS
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11.3.2 Evidence of flights – Security against manipulation
The FAI (Fédération Aéronautique Internationale) and its subgroup IGC (International Gliding
Committee) require a recording format which, while memorising continuously the time of day, position
and also the flight altitude, substitutes the barograph. When transmitting flight data to the pilot’s PC, a
so-called IGC-File is created, which receives a digital signature (=G-Record), authenticating the flight
data and making it fraud-resistant. If only one character of the file containing the flight data would be
changed, the signature would no longer be compliant to the data and the judging committee would be
aware of the manipulation
.
11.3.3 Digital Signature -
After completion of a flight, effected automatically or manually, this „Digital Signature“ is
calculated autonomously and attached to the flight data file as so-called G-record.
A correlative remark „Generating Digital Signature“ is displayed in the info field of the
instrument. As this calculation is extremely complicated, it may take several minutes following a
long flight with setting of a short scan rate. Please wait until this message will
disappear