011-03520-00

GMA 345 digital audio panel and intercom 011-03520-00

011-03520-00 is the exact Part Number for this Garmin GMA 345 digital audio panel and intercom. The unit manages cockpit radio audio, microphone selection, intercom, music and supported Bluetooth audio functions. This card is tied to the photographed configuration and complete suffix, rather than serving as a generic listing for every GMA 345 version or a visually similar member of the same family.

The source listing identifies this exact configuration as a serviceable FAA TSO GMA 345 operating on a 14/28 V aircraft supply. The photographed factory plate confirms Part Number 011-03520-00, model GMA 345, 14/28 V DC marking and photographed serial number 3Z0000297. The source inventory record references a different available serial, so the serial allocated for supply must be reconfirmed at quotation. The identification information is important because voltage, lighting, software, hardware options, certification and connector configuration can differ across related versions. The complete Part Number and the approved technical record must be checked together before purchase or installation.

Operational role and system function

The GMA 345 is the crew-facing audio management point between installed communication and navigation receivers, microphones, headsets, speaker, intercom positions and auxiliary audio sources. Its front panel provides COM/NAV selection, marker-beacon controls, crew isolation, playback, music, telephone and USB-related functions for an approved installation. In service, the unit depends on the integrity of its associated sensors, antennas, transceivers, control panels, displays, data buses, wiring, power and grounding. A reported fault at the unit can therefore originate elsewhere in the connected chain, and troubleshooting should follow the approved aircraft and equipment procedures.

The practical role of GMA 345 is to perform its defined function while exchanging required signals with compatible equipment. It cannot replace missing system components and should not be evaluated as an isolated consumer device. Controls or connectors visible in photographs do not prove that every possible function is enabled in a particular aircraft installation.

Installation and connected equipment

A complete installation can connect multiple COM and NAV audio sources, microphone and headphone circuits, aircraft speaker, marker-beacon antenna, music inputs, telephone audio, USB power and configuration wiring. The rack, backplate, connector kit, harness and installation approval must match the exact GMA 345 configuration and the aircraft audio architecture. A rack, backplate, connector kit, antenna, wiring, cooling hardware or other accessories are not assumed to be included unless they are expressly listed in the quotation. Similar panel dimensions or family names do not prove electrical or approval compatibility.

Before installation, technicians should compare 011-03520-00 with the removed unit, aircraft equipment list, wiring diagrams, installation manual and modification records. Panel space, mounting depth, connector keying, pin allocation, circuit protection, lighting, ventilation, data format and configuration settings all require confirmation. Any substitution must be supported by approved data.

Configuration checks for 011-03520-00

The suffix in 011-03520-00 is part of the product identity. Software level, modification status, database requirements, embedded options, voltage and certification can affect compatibility even when two units look alike. These checks are especially important in aircraft that have accumulated supplemental approvals, avionics upgrades or wiring changes over time.

Incoming inspection should verify the manufacturer plate, housing, connectors, locking features, controls, display or indicator face, fasteners and evidence of unauthorized modification. Functional testing should use the approved bench procedure for the exact model and suffix. Installation and return to service remain the responsibility of appropriately authorized personnel.

Serviceable condition, ordering and support

This 011-03520-00 GMA 345 is offered in Serviceable condition from partner stock with a six-month warranty. Partner stock should be reconfirmed at quotation because allocation can change. The available serial number, current test status and release documentation for the specific unit are confirmed before order acceptance.

For an inquiry, specify Part Number 011-03520-00, model GMA 345, required quantity, destination and documentation requirements. Including the aircraft type and removed-unit Part Number helps prevent configuration errors. Related avionics can be reviewed in the Garmin / BendixKing / Honeywell / Collins category. Products shown there are related catalog positions, not interchangeable replacements unless approved technical data explicitly says so.

Product Type: Digital audio panel and intercom

Designation: 011-03520-00

Manufacturer: Garmin

Model: GMA 345

Function: Cockpit audio selection, intercom, marker-beacon audio, playback, music and supported Bluetooth functions

Input Voltage Range: 11–33 V DC according to the Garmin GMA 342/345 installation manual

Typical Operating Current: 0.83 A at 14 V DC or 0.43 A at 28 V DC without USB charging

Maximum Current without USB Charging: 1.19 A at 14 V DC or 0.90 A at 28 V DC

Maximum Current with USB Charging: 2.39 A at 14 V DC or 1.49 A at 28 V DC

Speaker Output: 3 W into 4 Ω at 14 V; 10 W into 4 Ω or 7 W into 8 Ω at 28 V

Photographed Serial Number: 3Z0000297; the serial allocated for supply must be reconfirmed

Certification Reference: FAA TSO according to the source listing; TSO-C139a marking on the photographed plate

Condition: Serviceable

Warranty: 6 Months

Installation Note: Confirm the exact Part Number, suffix, software or modification status, rack, connectors, wiring and aircraft approval before installation

Technical Documentation: Applicable manufacturer installation and maintenance data plus aircraft wiring and approval documentation

All shipments are carried out from our international warehouse in Dubai (UAE), as well as from our partners’ remote warehouses.

In Stock — items available in stock at the Dubai warehouse are dispatched within 5–10 business days after receiving 100% prepayment.

Remote Stock — items available at our partners’ remote warehouses are supplied within an average of 30–45 business days after receiving 100% prepayment.

Pre-Order — made-to-order products are manufactured and delivered within an average of 45–60 business days. Payment terms: 50% advance payment to start production, with the remaining 50% paid before dispatch from the Dubai warehouse after full readiness for shipment.

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.