Manual

Operating Manual Flytec 6020
that even pre-flight events are included in the recording.
The Barogram is also included in the IGC-File which is generated for each flight.
Photographic evidence and confirmation by flight observers are no longer required for
national performance flights. The file can be sent directly to the judging committee of the
OLC via the Internet. (at present, the OLC is evaluated in Germany by the DHV).
9.5.3 Evidence of flights - Safety against Manipulation
The FAI (Fédération Aéronautique Internationale) and its subgroup IGC (International
Gliding Committee) require a recording format which, while memorizing continuously
the time of day, position and also the flight altitude, and therefore 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 would be changed, the signature would
no longer be compliant to the data and the judging committee would be aware of the
manipulation.
9.5.4 Digital Signature and OLC- Registration
The popularity of decentralized competitions has been growing enormously over recent
years. Meanwhile 26 countries have accepted the OLC (Online Contest) convention.
These agreements state that any pilot can submit flights at will over the Internet for
approval and evaluation. The submission has to be compliant to IGC-format (WGS84)
and must have a digital signature. In order to facilitate further on the utilisation of usual
GPS-Receivers, relevant PC-evaluation programs such as Compegps, Gpsvar, Maxpunkte
or Seeyou calculate a digital signature to allow submission of flights in the required form.
However, a “signature” created by PC provides only half the safety against falsification.
In the long term this signature shall be mandatory to be provided by the GPS-Recorder
instruments, as for ex. the 6020-GPS.
After completion of a flight, effected automatically or manually, this „Digital Signature“
is calculated autonomously by the 6020-GPS and added 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.
Should it once happen that the OLC does not accept the digital signature upon the transfer of
flight data, the signature can be recalculated on the flight analysis display, by pressing the
key
F2
Recalc Signature „Rec Sig“.
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