PowerFLARM Core Manual v.150 International
and liable for the safety of all passengers and other aircraft. Opera-
tion of PowerFLARM is solely a matter at the discretion of the pilot.
The unit may only be operated by persons who have carefully stud-
ies all user instructions.
A display attached to PowerFLARM can only alert of the presence of
other moving aircraft if the other aircraft is equipped either with a
FLARM-compatible system, an ADS-B OUT (1090ES) on 1090MHz
or an interrogated transponder Mode C or S. PowerFLARM does
neither interrogate transponders nor operate as a transponder, and
is thus neither detected by TCAS nor air traffic control.
PowerFLARM has not undergone the conventional aeronautical
certification process. PowerFLARM software development was
conducted in accordance with the usual standards and procedures
required for industrial electronics products. The use of public ac-
cess unlicensed radio bandwidths in the air is subject to a number
of limitations, with some national differences. The pilot is solely
responsible that PowerFLARM is operated in accordance with the
valid local regulations.
The use of PowerFLARM is strictly limited to flights in VMC (Visual
Meteorological Conditions). PowerFLARM may not be used for nav-
igation.
FLARM® Radio Communication
The PowerFLARM radio communications are made using a public
frequency band not requiring a user licence. This means that the
band is also used by a number of other applications. PowerFLARM
has no exclusive rights to use the frequency band, so there is no
guarantee that PowerFLARM reception will be free from interfer-
ence by other users.
Essentially, the PowerFLARM communications protocol places little
limit on the number of units that may be contacted within the work-
ing range. However, an increasing number of units within range
leads to a reduction in the probability (graceful degradation) that a
single radio message can be received. But the probability that the
next signal from the same transmitter will not be received is gener-
ally small. A large number of signals from other aircraft does not
reduce the working range.
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