Can the KT-74 be operated in mode C if desired?
We are not aware of the ability for mode selection between C and S on this transponder.
Is the KT 74 a plug and play replacement for the KT 79?
No it is not as the KT 74 is only a slide in replacement for the KT 76A/C and KT 78A model transponders.
Will the KT 74 display TIS-B traffic on a Garmin 430W. As the Garmin GTX 330 does?
Garmin is working with Trig (maker of the KT-74) on the protocol for this but nothing is in place yet for traffic to display on the Garmin GPS/NAV/COM units.
What are the traffic display options and requirements for the KT-74 in the cockpit?
Right now it will be a Bendix/King display unit as we do not have confirmation on any other display device.
How does the altitude alert work on the Bendix King KT-74 ADS-B Mode S Transponder? Is it an audio alert?
The KT74 includes an altitude monitor function that can alert the pilot to altitude deviations in cruise flight. It will alert when the pressure altitude differs from the selected altitude by more than 200 feet. The altitude alerter output, on the 12 way secondary connector, is switched to ground when the altitude deviation is detected and can be connected to a warning light or sounder to warn the pilot.
Is the Bendix/King KT 74 unit 1090ES compliant?
Yes, once the STC for the KT 74 is complete it will be 1090ES compliant (note it will still require a certified WAAS GPS antenna).
Will the TIS-B traffic display on the Garmin Aera 796 Portable?
The KT 74 has a TIS output but as the KT 74 is not out yet we have yet to confirm the interface to a Garmin portable.
The KT 74 requires a certified WAAS GPS antenna. The unit must therefore contain a GPS receiver. Is this correct?
No, the KT 74 does not have a WAAS GPS as it is only a transponder. You will need to wire the KT 74 to a WAAS certified GPS to be ADS-B out compliant.
Does the KT 74 transponder have a STC for a C172E?
The STC will not be available until sometime in early 2014.
What frequencies does the BENDIX KING KT 74 ADS-B MODE S TRANSPONDER operate at and does it operate at both 978 MHz and 1090MHZ?
Per the KT74 manual, the transponder is only capable of the 1090MHZ frequency.
Is the KT74 mode S approved for installation in Europe
Although the KT74 can be installed and used in Europe, The ADS-B feature only works in the United States.
Where do I buy the GPS module and GPS antenna for the KT-74 ?
If you would like to comply with the new ADS-B requirement, you would actually need to have a certified WAAS GPS. Some examples include the GTN 650, GNS 430W or the KNS770.
Is the KT74 compatible with the Garmin 650? Can it get its position from the Garmin?
Not at this time but King is currently working on it.
If you already have a Garmin GNS530W, what more do you need to buy in addition to the KT74 transponder to make it ADS-B compliant?
The combination of a WAAS GPS such as the Garmin GNS 530W in combination with the KT74 transponder would comply with ADS-B out requirements. Honeywell is currently working on the STC for this pairing and should be available in the future.
Does the KT-74 have extended Squitter?
The KT-74 does have a 1090 MHz Mode S extended squitter.
Is the KT-74 a slide in replacement for a Kt-76?
The KT-74 is a slide in replacement for the KT-76A and KT-76C models but not the KT-76.
Is the KNS 770 an approved GPS data source for the KT 74 to meet ADS-B out compliance?
Per Honeywell, the KSN 770 Integrated Safety Navigator is not currently an approved source to be ADS-B out compliant.
Does the Bendix/King KT-74 accept both gray and serial encoder data?
Per the installation manual, the KT-74 does accept both gray and serial encoder data.
I see the stc has been approved for kt-74 and garmin 430w/530w.I also see my aircraft is on the approved list.How can i get the stc paperwork to complete my installation??
The FAA stipulates that a certified ADS-B Out solution must have both an STC and be installed by an authorized Part 145 facility. Peregrine owns the STC and requires installation performed at Part 145 facility for this paperwork.
Could The KT 74 ADS-B Mode S Transponder use the tray/rack/wiring of an existing KT 76?
It can for the KT-76A and KT-76C but not the KT-76.
Is this unit compatible with the garmin 480 WAAS as an acceptable GPS source?
Per the manufacturer: No the Garmin 480 is not compatible with the KT 74
Will the KT-74 Transponder be a direct replacement for the Narco AT50 and AT150 Transponders and use the same rack and plugs?
The KT-74 is not a direct slide in replacement for the Narco AT50 and AT150 Transponders.
Does the KT 74 output TIS-B traffic? When installed with a KSN770, will the traffic displayed be only TIS-A or both TIS-A and TIS-B?
Per Bendix king, The KT 74 can output Tis A traffic. Currently the STC is in the works for the KT-74 to interface with the KSN 770 which is expected as early as June up to the 3rd quarter of this year. More details will be available then.
Will this work with a King KLN94 GPS?
Per Bendix King: No, the ADS-B function is not supported between the KT74 (11-12038) and the KLN94 GPS.
Is the KT74 mode S and ADS-B approved and compliant for operation in Canada?
Per Bendix King: Yes, the KT74 (11-12038) is approved for use in Canada.
Is the KT 74 both ADS-B IN and OUT?
The KT 74 (11-12038) is only ADS-B out.
Is the Trig TN70 WAAS GPS kit compatible with the KT-74 Transponder
Per Bendix/King: The KT-74 can not be used with the TN70 as an acceptable ADS-B out solution.
I want to replace my KT78A in a Piper Cherokee 180 hp in Europe. Is this with a KT74 possible with retrofit to keep all the wiring?
No, some of the wiring is the same but there will be additional wiring needed.
You say plug & play - but doesn't the KT74 and KT76A ADS-B WAAS connection involve a rack change / mod?
The KT74 is a plug and play slide-in for the KT76A but you will need additional wiring to connect to a certified GPS source to meet the ADS-B mandate.
(1) The KT-74 is Plug-N-Play replacing a KT-76A, is there a discount for just the KT-74 without Tray & Connector?
(2) What else is required to make the KT-74 ADS-B compliant?
King does not offer the KT-74 as a unit only option. You will need to connect to an ADS-B out box or a WAAS GPS source to be 2020 compliant.
Does all of the required STC paperwork from Peregrine come with the transponder? Need the STC to use a GNS430W as a position source in a Cessna 172N
The STC paperwork for the KT 74 is available under the documents tab for this part. If you would like the STC airspeed kit with the differential pressure switch that must be special ordered. Contact avionics for a quote.
The Mode A/C transponder uses an altitude encoder to report altitude. How does the Bendix King KT74 Mode S transponder receive altitude information?
The KT-74 also requires an encoder to receive altitude information.
Is the Bendix King KT74 plug and play with the Bendix King KT73?
No, a new wiring harness and rack will need to be installed.
I recently had my KT76A transponder inspected as is required bi-annually, so will I have to conduct this testing again when I swap it out for the new KT74, or will it be all set to operate as is?
The KT 74 installation will need to be signed off by a mechanic. After the installation is signed off, you will not be required to perform another inspection until your next bi-annual.
If the KT-74 is installed into an experimental aircraft, can the KT-74 be wired to the Garmin 796 WAAS GPS to be ADS-B out compliant?
No, the 796 is not an ADS-B approved GPS source.
Is the KT74 NVIS compliant or can it be supplied by the factory as an option?
No, King does not offer a NVIS version at this time.
Would a Garmin GA 35 WAAS GPS antennae suffice for the WAAS input for the KT-74? Intend to use a G-5 EFIS.
The KT74 STC only shows the Garmin GTN and GNS systems as being applicable for a certified installation. See STC #SA00765DE for further information.