Click on a question below to see the answer. If you have a question about this model that is not answered below, please contact sales@seaerospace.com
Will the Garmin GTX-327 digital transponder directly replace the analog GTX-320 and GTX-320 transponders?
Yes, the GTX-327 utilizes the same mounting rack and mating connector as the GTX-320 and GTX-320A. The GTX-327 offers a few additional features but matches the standard connection pins as the GTX-320 and GTX-320A.
What transponders meet the requirements for ELS and EHS in Europe?
Click Here to view the latest list of transponders capable of meeting the European transponder mandate. This list created and maintained by the European Organization for the Safety of Air Navigation (Eurocontrol).
What is the difference between Garmin part numbers beginning with 010 and 011?
Garmin part numbers beginning with 010 are System part numbers. These numbers are the catalog part numbers normally used to order systems from Garmin that would include a unit and its related system accessories such as installation kits, antennas, databases, manuals, etc. 010 part numbers do not appear on the dataplate of any Garmin component. Garmin part numbers beginning with 011 are the actual unit part numbers. That is, this is the part number on the dataplate of the main unit within a system. 011 part numbers do not imply that system accessories are included.
What issue exists between the GTX-327 suppression and some Bendix/King DME units?
While external suppression should be connected when a GTX-327 is installed into an aircraft with a DME, the GTX-327 suppression input/output is not compatible with the Bendix/King KN-62, KN-64, and KNS-80. These DMEs have an output only suppression port and can be damaged by the GTX-327 mutual suppression output. Therefore, the suppression pin should be left open. If the suppression line is connected between the GTX-327 and above King DME units then the DME will appear to be inoperative, display will be blank and will not transmit.
Should a new transponder certification be performed if simply replacing an existing transponder?
Yes, anytime a transponder is removed or replaced an altitude correlation between what the transponder is reporting and what is displayed on the altimeter needs to be performed. This is outlined in FAA CFR Part 91.413. This regulation indicates that following any installation or maintenance of a transponder where data correspondence error could be introduced, the integrated system has been tested, inspected, and found to comply with paragraph (c), appendix E. Furthermore, these references indicate that an integration test between the altitude reporting equipment and transponder system must be conducted.
For complete information, please refer to these FAA regulations or contact Southeast Aerospace Tech Support team at shop@seaerospace.com.
I need a basic transponder antenna, which one should I buy?
Although some manufacturers call out specific transponder antennas in their installation manuals, almost any transponder antenna can be used with any transponder. Various models are available based on the screw hole pattern desired and the speed & drag considerations based on the aircraft type.
AV-22
CI-101
For smaller general aviation aircraft, Southeast Aerospace recommends the stub type AV-22 or CI-101 antenna.
CI-105
AV-74
For medium to larger aircraft, Southeast Aerospace recommends the blade type CI-105 or AV-74 antenna.
Ultimately, it is the responsibility of the installer or installing agency to determine what antenna is suitable for the aircraft application.
GTX-327 Product FAQ
Click on a question below to see the answer. If you have a question about this model that is not answered below,
please contact sales@seaerospace.com
Will the Garmin GTX-327 digital transponder directly replace the analog GTX-320 and GTX-320 transponders?
Yes, the GTX-327 utilizes the same mounting rack and mating connector as the GTX-320 and GTX-320A. The GTX-327 offers a few additional features but matches the standard connection pins as the GTX-320 and GTX-320A.
What transponders meet the requirements for ELS and EHS in Europe?
Click Here to view the latest list of transponders capable of meeting the European transponder mandate. This list created and maintained by the European Organization for the Safety of Air Navigation (Eurocontrol).
What is the difference between Garmin part numbers beginning with 010 and 011?
Garmin part numbers beginning with 010 are System part numbers. These numbers are the catalog part numbers normally used to order systems from Garmin that would include a unit and its related system accessories such as installation kits, antennas, databases, manuals, etc. 010 part numbers do not appear on the dataplate of any Garmin component. Garmin part numbers beginning with 011 are the actual unit part numbers. That is, this is the part number on the dataplate of the main unit within a system. 011 part numbers do not imply that system accessories are included.
What issue exists between the GTX-327 suppression and some Bendix/King DME units?
While external suppression should be connected when a GTX-327 is installed into an aircraft with a DME, the GTX-327 suppression input/output is not compatible with the Bendix/King KN-62, KN-64, and KNS-80. These DMEs have an output only suppression port and can be damaged by the GTX-327 mutual suppression output. Therefore, the suppression pin should be left open. If the suppression line is connected between the GTX-327 and above King DME units then the DME will appear to be inoperative, display will be blank and will not transmit.
Should a new transponder certification be performed if simply replacing an existing transponder?
Yes, anytime a transponder is removed or replaced an altitude correlation between what the transponder is reporting and what is displayed on the altimeter needs to be performed. This is outlined in FAA CFR Part 91.413. This regulation indicates that following any installation or maintenance of a transponder where data correspondence error could be introduced, the integrated system has been tested, inspected, and found to comply with paragraph (c), appendix E. Furthermore, these references indicate that an integration test between the altitude reporting equipment and transponder system must be conducted.
For complete information, please refer to these FAA regulations or contact Southeast Aerospace Tech Support team at shop@seaerospace.com.
I need a basic transponder antenna, which one should I buy?
Although some manufacturers call out specific transponder antennas in their installation manuals, almost any transponder antenna can be used with any transponder. Various models are available based on the screw hole pattern desired and the speed & drag considerations based on the aircraft type.
AV-22
CI-101
For smaller general aviation aircraft, Southeast Aerospace recommends the stub type AV-22 or CI-101 antenna.
CI-105
AV-74
For medium to larger aircraft, Southeast Aerospace recommends the blade type CI-105 or AV-74 antenna.
Ultimately, it is the responsibility of the installer or installing agency to determine what antenna is suitable for the aircraft application.
NOTE: Please Click Here to Review Important Information for this Repair Quote. Current average turn-time is 5-10 days. Click Here to submit a Return Material Authorization form.
Part#
Bench Test
Avg Repair
Avg Overhaul
Notes
011-00490-00
$220.00
$575.00
$0.00
Item is not available for over-the-counter(OTC) sale and must be installed by Southeast Aerospace.
If you are interested in an installation quotation, please click here.