011-00779-30

Mode S Extended Squitter system role

The GTX 33ES receives 1030 MHz interrogations and transmits Mode S replies on 1090 MHz through the installed transponder antenna. In a properly configured ADS-B Out architecture, the Extended Squitter function broadcasts the approved surveillance data supplied by compatible position, altitude and avionics sources. The unit does not generate all required navigation data independently, so the complete installation determines operational compliance.

A typical chain is crew command from the integrated display, aircraft identity and altitude information from approved sources, position data from compatible navigation equipment, processing by the GTX 33ES, and 1090 MHz output through the antenna. Every link must use approved wiring, configuration and software. A serviceable transponder cannot compensate for an unapproved position source, incorrect aircraft parameters or excessive antenna-cable loss.

Exact -30 configuration and suffix control

The 011-00779-30 suffix is an essential ordering detail. It distinguishes this ES-enabled configuration from the standard 011-00779-10 GTX 33 hardware and from other family variants. A matching case size or connector does not prove equivalent functionality. Buyers should compare the complete Part Number, modification status, software and approval basis rather than ordering only by the model name printed on the plate.

The plate confirms 14/28 VDC operation and includes original TSO, ETSO and software references. An orange material-compliance label and the blue Garmin side strip remain part of the authentic photographed unit. These markings should not be treated as substitutes for release paperwork, but they help document the exact physical configuration and should remain readable in the product gallery.

Installation, configuration and functional testing

Installation requires a compatible rack, connector, circuit protection, data interfaces, altitude and position sources, aircraft configuration, antenna and coaxial cable. The equipment must be programmed with the correct aircraft identity and system parameters under approved procedures. Cooling, bonding and equipment-location requirements also need verification. Compatibility with a particular G1000 or other integrated suite should be confirmed from the aircraft documentation.

Receiving inspection should verify Part Number 011-00779-30, serial number, label condition, connector contacts, rails and evidence of damage or unauthorized repair. Bench testing should confirm control communication, Mode S and ES functionality, receiver sensitivity, transmit frequency and power, altitude reporting and configuration retention. Post-installation tests remain necessary to validate the entire antenna and data chain.

Serviceable supply and ordering information

This 011-00779-30 GTX 33ES is offered in Serviceable condition from partner stock with a six-month warranty. The main image gives a clean catalog view, while the gallery image preserves the exact Part Number plate and original product markings. The photographed serial number identifies the reference unit and does not guarantee shipment of that same serial-numbered component unless confirmed in the quotation.

For an inquiry, specify Part Number 011-00779-30, model GTX 33ES, aircraft type, integrated display, approved position source, bus voltage, required documentation and quantity. Related transponders, navigation equipment and control displays can be reviewed in the Garmin / BendixKing / Honeywell / Collins category. System relationship does not establish interchangeability.