Flarm Operations; Flarm Displays; Status And Error Conditions; Traffic Collision Warnings - FLARM FUSION PowerFLARM User And Maintenance Manual

FLARM Technology Ltd
Hinterbergstrasse 15
CH-6330 Cham
6

FLARM Operations

This section describes general flight operations with a FLARM system installed. The
specific handling of the pilot user interface is described in the display Operating
Manual.
General information about how the FLARM system works is described in Section 1.
6.1

FLARM Displays

PowerFLARM Fusion is normally connected to a FLARM Compatible display as a
primary means of collision avoidance (see PowerFLARM Fusion Installation
Manual). The display is normally installed in each pilots' primary field of view.
Note: Displays certified as FLARM Compatible (normally carry the "FLARM
Compatible" logo) have shown to have implemented all required systemic
functions. This includes collision warnings, status information, error
conditions, and obstacle warnings. Other displays may not be conformal.
The display serves as the primary pilot user interface. In addition to annunciating
collision warnings and visualizing traffic information, it also shows status and error
conditions of Fusion.
6.1.1

Status and Error Conditions

The display will indicate status conditions and error codes. A list of error codes is
available in Appendix B.
Error codes are accompanied by a severity 1-3. Severity 3 implies a fatal error and
FLARM is not operational. Severity 2 in most cases implies that functionality is
reduced. Severity 1 is for information purposes only.
Note: An error condition is also indicated on the Hub Status page and via the
status LEDs.
6.2

Traffic Collision Warnings

Traffic collision warnings are issued based on the time remaining to the predicted
collision (i.e. not the geometric distance between the aircraft). There are three
levels of warnings with different types of annunciations — visual and/or aural
depending on the installation. The warning consists of the distance, relative
bearing, and altitude difference to the intruder.
The first warning is issued around 18 seconds before impact. The second warning
is issued around 12 seconds before impact and the third warning around 8 seconds
POWERFLARM
FUSION USER AND
MAINTENANCE
MANUAL
Date: 2020-11-10
Version: 1.0
Page: 29 of 49
Document Number:
FTD-078