predicted flight path information as a digital radio message, and
receives similar data from FLARM compatible systems and
Automatic Dependent Surveillance Broadcast (ADS-B) transmitters
in nearby aircraft and gliders. PFLARM can display the location of
nearby aircraft, an indication of relative altitude using its barometric
data and provide audio and display warnings of potential
conflictions. PFLARM can provide warnings about obstacles on the
ground (cables, masts) if the respective database has been
installed; this database is not installed on BBMF PFLARM units.
2.
PFLARM provides collision warnings in two formats:
a. Range, bearing, height and inclination/declination to other
FLARM/PFLARM and ADS-B equipped aircraft, based upon 3D
GPS position. This is provided in a ‘radar’ style display and a
‘list’ view.
b. Estimated range (displayed in the form of a circle) based
upon the strength of the SSR returns from Mode 3C/S
squawking aircraft. Estimated height difference is calculated
from the Mode 3C/S returns compared to the internal barometric
pressure sensor on the PFLARM Core unit.
WARNING:
PFLARM is not designed to replace lookout as the
primary means of avoiding a mid-air collision. Collision avoidance
remains the responsibility of the crew.
Note:
Collision warnings are generated by reference to the time
remaining to a possible collision and not by reference to the range to
an aircraft.
System Description
3.
PFLARM comprises the following components:
a. A Power Flight Alarm Core Unit mounted under the
Navigator’s table as shown in Fig 1.
AIL 1/16
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UNCONTROLLED DOCUMENT - NOT FOR USE IN FLIGHT OR TO BE PRINTED
UNCONTROLLED DOCUMENT - NOT FOR USE IN FLIGHT OR TO BE PRINTED
