TQ Aviation
KTX2-F.0100
EASA.AP445
MAN
KTX2-F.A-MAN.0001.docx
Page 54 of 74
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The following table shows a list of all degrading failures of the transponder.
Failure
Explanation
Degradation
Action / Remark
DC converter
TX supply voltage
is low
TX output power
is reduced.
Send unit for servicing.
Bad antenna
Antenna VSWR is
bad (very high)
TX output power
is reduced.
Check antenna installation (cable,
connectors etc.) to resolve the
problem before next flight.
If no root cause can be discovered,
send unit for servicing.
Transmitter weak
TX output power is
too low
TX output power
is reduced.
Check antenna installation (cable,
connectors etc.) to resolve the
problem before next flight.
If no root cause can be discovered,
send unit for servicing.
Flight Level
The altimeter
reports a failure
No barometric
altitude
information is
sent.
Check connection and function of
static air port to resolve the problem
before next flight.
If no root cause can be discovered,
send unit for servicing.
Low battery voltage
Battery voltage is
below 11 Volts
See below.
See below.
Very low battery voltage Battery voltage is
below 7.5 Volts
See below.
See below.
Table 6: Degrading Failures
4.1.1 Low Battery Voltage
If the supply voltage of the transponder falls below 11 V DC, a yellow indication “BAT LOW” is shown in
the center of the display. The indication is shown as long as the voltage is too low.
Figure 42: Low Battery Voltage
Note:
The transponder is designed to operate above 9 V DC. Do not operate the unit below 9 volts.
