011-00455-00

Garmin GTX 330 Mode S transponder 011-00455-00

011-00455-00 is the exact Part Number for the standard black-panel Garmin GTX 330 Mode S transponder. The panel-mounted unit combines the transponder electronics, code-entry controls and cockpit display in one enclosure. It allows the crew to select the assigned four-digit code, choose the operating mode, activate IDENT and review supported traffic or system information through the installed aircraft interface.

The GTX 330 is part of the aircraft surveillance chain rather than a stand-alone traffic sensor. It receives interrogations on 1030 MHz and transmits Mode A, Mode C or Mode S replies on 1090 MHz as configured. Altitude data, power, suppression, antenna connection and any compatible data inputs come from the approved aircraft installation. A correct bench result therefore does not by itself establish eligibility for a particular airframe.

Mode S surveillance and cockpit operation

During normal operation, the GTX 330 responds to compatible secondary-surveillance radar and airborne interrogation. The front panel provides numeric keys, dedicated ON, ALT, STBY and OFF selections, VFR code recall, IDENT and function controls. The display supports code, altitude and configuration information. Published data identify 4,096 selectable Mode A codes and a nominal transmitter power of 250 watts.

A typical signal path is aircraft altitude source and configuration inputs to the GTX 330, received interrogation through the transponder antenna, internal reply processing, and a 1090 MHz response through the same approved antenna system. Traffic information presented elsewhere in the cockpit can depend on additional equipment and data links. The GTX 330 should not be described as supplying every traffic function without confirmation of the complete installation.

Exact -00 configuration and electrical data

Garmin configuration tables identify 011-00455-00 as the standard GTX 330 configuration. Other suffixes belong to gray-bezel or diversity variants, including GTX 330D equipment, and must not be treated as the same product by appearance. The full suffix should be checked on the purchase order, release documentation and unit identification label before installation or exchange.

Published installation data give an input range of 11 to 33 VDC and typical power consumption of approximately 27 watts. The documented operating temperature range is about -20 °C to +55 °C, and the operating altitude limit is 55,000 feet. Approximate dimensions are 6.25 inches wide by 1.65 inches high, with 11.25 inches of depth behind the panel. The unit weighs about 3.4 pounds, or roughly 4.2 pounds with the installation rack.

Installation, antenna and maintenance checks

Installation requires the correct rack, connector, power protection, altitude input, control or data wiring and approved transponder antenna. Coaxial cable condition and antenna placement materially affect reply performance. A low-power indication or interrogation fault can originate in the antenna, cable, altitude source, grounding or aircraft wiring rather than in the transponder itself. Troubleshooting should follow current Garmin and aircraft maintenance data.

Receiving inspection should verify Part Number 011-00455-00, model GTX 330, serial number, bezel color, connector and rack condition, modification status and release paperwork. An approved bench test should check display segments, keypad response, mode changes, code selection, altitude reporting, IDENT, transmitter frequency and output power. Installation and return to service remain subject to the applicable aircraft approval and regulatory test requirements.

Serviceable supply and ordering information

This 011-00455-00 GTX 330 is offered in Serviceable condition from partner stock with a six-month warranty. The main studio photograph shows the black front panel and controls, while the authentic gallery image retains the real housing and viewing angle of the reference unit. A serial number visible in any source photograph identifies the reference component only and should be confirmed if serial-specific allocation is required.

For an inquiry, specify Part Number 011-00455-00, model GTX 330, aircraft type, installed rack, system voltage, altitude-data source, documentation requirement and quantity. Other navigation, communication and surveillance units can be reviewed in the Garmin / BendixKing / Honeywell / Collins category. Related products can operate in the same avionics suite but are not automatically interchangeable.

Product Type: Panel-mounted Mode S transponder

Manufacturer: Garmin

Model: GTX 330

Designation: 011-00455-00

Alternative Designations: GTX330; GTX-330; 0110045500; Garmin GTX 330

Main Function: Mode A, Mode C and Mode S transponder replies in a compatible installation

Receive Frequency: 1030 MHz

Transmit Frequency: 1090 MHz

Nominal Transmit Power: 250 W

Selectable Mode A Codes: 4,096

DC Input Range: 11 to 33 VDC

Typical Power Consumption: Approximately 27 W

Operating Temperature Range: -20 °C to +55 °C

Operating Altitude: Up to 55,000 ft

Approximate Dimensions: 6.25 in W × 1.65 in H × 11.25 in depth behind panel

Approximate Unit Weight: 3.4 lb / 1.54 kg

Approximate Installed Weight: 4.2 lb / 1.91 kg with rack

Qualification Reference: TSO C112

Display: Front-panel dot-matrix LCD

Typical Signal Chain: Altitude/configuration inputs → GTX 330 → approved transponder antenna

Interchangeability: Verify complete suffix, bezel, diversity configuration, rack, wiring and approval

Condition: Serviceable

Warranty: 6 Months

Technical Documentation: Applicable Garmin GTX 330 installation and maintenance data

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Returns & Changes (Restocking Fee)
For selected items, a RESTOCKING FEE of 10% may apply in case of return, order cancellation, or changes to the order specifications. This condition applies only to certain products and is confirmed at the order approval stage.

Warranty
All products are covered by a standard 6-month warranty.
Extended warranty is available upon request and is agreed individually; it may affect the final product price.