BendixKing KTA 910 System KTA 970 - Manual (Page 36)

Rev 2
KTA 870/KMH 880 Pilot’s Guide TAS System Considerations
006-18265-0000
28
LIMITATIONS AND NOTES
LIMITATIONS
Refer to the Airplane Flight Manual.
NOTES
The capability of TAS is dependent upon the type of transponder in the
Intruding aircraft:
The Intruding aircraft must be equipped with a properly operating
transponder for normal TAS operation. TAS is unable to detect any air-
craft without an operating transponder.
If the Intruder is Non-Altitude Reporting (NAR), TAS will display only the
range and bearing. It can issue a TA (Traffic Advisory) based on dis-
tance and direction of flight. TAS assumes Non-Altitude Reporting
(NAR) traffic is at the same altitude as your own aircraft.
Options for TAS also include the following:
* The maximum number of targets displayed (3 - 30) can be selected via
the configuration module.
* The TAS display may have pilot selectable range or may be a fixed
range controlled by the aircraft wiring.
* The TAS system can be automatically placed in standby when the air-
craft is on the ground.
* The manually initiated system self test can be inhibited in flight.
* TAS can be wired to give EGPWS and Wind Shear a higher aural
warning priority.
If a radio altimeter is installed, the TAS aural warning (TRAFFIC, TRAF-
FIC) is inhibited below 400 feet AGL during descent and below 600 feet
during ascent. If no radio altimeter is installed, then the aural warning is
inhibited whenever the Landing Gear is EXTENDED.
It is possible to see an aircraft flying the same course and direction as
your own aircraft, yet TAS may not consider it a threat. TAS calculates
the closure rate of the Intruder, and derives the time to the Closest Point
of Approach (CPA). If there is no closure rate, no advisory will be
issued, unless the Intruder is very close (within approximately 0.2 mile).
Conversely, traffic at the same altitude very far ahead (about 10 miles)
may be shown as a TA by TAS because of a very rapid closure rate.
On a bottom monopole antenna installation, the TAS bearing and dis-
play of a Non-Altitude (NAR) aircraft may appear erratic when the intrud-
ing aircraft is close in range but distant vertically. This may make the
NAR traffic symbol momentarily disappear or move around the TAS dis-
play. The range distance for the NAR will be accurate but the intruder
may be well above or well below your aircraft. Use NORMAL visual scan
techniques to scan for this and other intruding aircraft.