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Annunciators

ATA · 328 parts

Annunciator control units and panels provide critical warning and alert functionality for aircraft systems. This category includes annunciator switches, lights, and complete control units designed to monitor and signal alarm conditions to pilots and operators. Our selection of 154 annunciator products covers a broad range of aircraft types and system requirements. Whether you need replacement annunciator panels, individual switches, or complete control units, you'll find options to compare and evaluate for your specific aircraft and mission needs.
Annunciation Control Unit/5V, Vertical, with Remote Relay. For use with Honeywell KLN-89B/94 models. — photo coming soon
Annunciation Control Unit/5V, Vertical, with Remote Relay. For use with Honeywell KLN-89B/94 models.
NE
P/N MD41-15385 Ati
$1,062.15
Price and availability checked Oct 28, 2026 MST
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Annunciation Control Unit/Control head only. 28V, Vertical. For use with Honeywell KLN-89B/94 models. — photo coming soon
Annunciation Control Unit/Control head only. 28V, Vertical. For use with Honeywell KLN-89B/94 models.
NE
P/N MD41-1538C Ati
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Annunciation Control Unit/24 Pole Remote Relay, Horizontal, 28V. For use with FreeFlight (Trimble) 2000APR and 2101 models. MD41-1628
Annunciation Control Unit/24 Pole Remote Relay, Horizontal, 28V. For use with FreeFlight (Trimble) 2000APR and 2101 models. MD41-1628
NE
P/N MD41-1628
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Annunciation Control Unit/24 Pole Remote Relay, Horizontal, 5V. For use with FreeFlight (Trimble) 2000APR and 2101 models. MD41-1628
Annunciation Control Unit/24 Pole Remote Relay, Horizontal, 5V. For use with FreeFlight (Trimble) 2000APR and 2101 models. MD41-1628
NE
P/N MD41-1628
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Annunciation Control Head/28 V, Horizontal. For use with FreeFlight (Trimble) 2000 Apr and 2101 models. MD41-1628
Annunciation Control Head/28 V, Horizontal. For use with FreeFlight (Trimble) 2000 Apr and 2101 models. MD41-1628
NE
P/N MD41-1628
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2001TSO/GX50/60 Acu/Horiz/14V MD41-1724
2001TSO/GX50/60 Acu/Horiz/14V MD41-1724
NE
P/N MD41-1724 Mid-Continent
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MD41-1744 Cntrl Head Only/14V MD41-1744
MD41-1744 Cntrl Head Only/14V MD41-1744
NE
P/N MD41-1744 Mid-Continent
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MD41-1758 Cntrl Head Only/28V MD41-1758
MD41-1758 Cntrl Head Only/28V MD41-1758
NE
P/N MD41-1758 Mid-Continent
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Annunciation Control Unit for TB17 Aviation Battery. MD41-1817 — photo coming soon
Annunciation Control Unit for TB17 Aviation Battery. MD41-1817
NE
P/N MD41-1817 Ati
$969.03
Price and availability checked Oct 28, 2026 MST
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Annunciation Control Unit/28V, Horizontal, with Remote Relay. For use with Honeywell KLN-900 models. MD41-1928
Annunciation Control Unit/28V, Horizontal, with Remote Relay. For use with Honeywell KLN-900 models. MD41-1928
NE
P/N MD41-1928 Ati
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Annunciation Control Unit/5V, Horizontal, with Remote Relay. For use with Honeywell KLN-900 models. MD41-1928
Annunciation Control Unit/5V, Horizontal, with Remote Relay. For use with Honeywell KLN-900 models. MD41-1928
NE
P/N MD41-1928 Ati
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Annunciation Control Unit/Control head only. 28V, Horizontal. For use with Honeywell KLN-900 models. MD41-1928
Annunciation Control Unit/Control head only. 28V, Horizontal. For use with Honeywell KLN-900 models. MD41-1928
NE
P/N MD41-1928 Ati
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Annunciation Control Unit/28V, Horizontal, with Internal Relay. For use with Honeywell KLN-90B models. MD41-328
Annunciation Control Unit/28V, Horizontal, with Internal Relay. For use with Honeywell KLN-90B models. MD41-328
NE
P/N MD41-328 Ati
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Annunciation Control Unit/28V, Vertical, with Internal Relay. For use with Honeywell KLN-90B models. md41-338
Annunciation Control Unit/28V, Vertical, with Internal Relay. For use with Honeywell KLN-90B models. md41-338
NE
P/N md41-338 Ati
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Annunciation Control Unit/28V, Horizontal, with Internal Relay. For use with Garmin GPS 155 and 165 models. MD41-428 Experimental Only
Annunciation Control Unit/28V, Horizontal, with Internal Relay. For use with Garmin GPS 155 and 165 models. MD41-428 Experimental Only
NE
P/N MD41-428
$1,665.49
Price and availability checked Oct 28, 2026 MST
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Acu/Vert/28V/W/Internal Relay MD41-438
Acu/Vert/28V/W/Internal Relay MD41-438
NE
P/N MD41-438 Mid-Continent
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Annunciation Control Unit/14V Horizontal, with Internal Relay. For use with Garmin GPS155XL and GNC300XL models. MD41-444 Experimental Only
Annunciation Control Unit/14V Horizontal, with Internal Relay. For use with Garmin GPS155XL and GNC300XL models. MD41-444 Experimental Only
NE
P/N MD41-444
$1,713.99
Price and availability checked Oct 28, 2026 MST
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Annunciation Control Unit/28V, Horizontal, with Internal Relay. For use with Garmin GPS155XL and GNC300XL models. MD41-448 Experimental Only
Annunciation Control Unit/28V, Horizontal, with Internal Relay. For use with Garmin GPS155XL and GNC300XL models. MD41-448 Experimental Only
NE
P/N MD41-448
$1,713.99
Price and availability checked Oct 28, 2026 MST
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Annunciation Control Unit/14V, Horizontal, with Internal Relay. For use with Honeywell KLN-89B/94 models. MD41-524
Annunciation Control Unit/14V, Horizontal, with Internal Relay. For use with Honeywell KLN-89B/94 models. MD41-524
NE
P/N MD41-524 Ati
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Annunciation Control Unit/28V, Horizontal, with Internal Relay. For use with Honeywell KLN-89B/94 models. MD41-528
Annunciation Control Unit/28V, Horizontal, with Internal Relay. For use with Honeywell KLN-89B/94 models. MD41-528
NE
P/N MD41-528 Ati
$1,564.61
Price and availability checked Oct 28, 2026 MST
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Annunciation Control Unit/5V, Horizontal, with Internal Relay. For use with Honeywell KLN-89B/94 models. MD41-528
Annunciation Control Unit/5V, Horizontal, with Internal Relay. For use with Honeywell KLN-89B/94 models. MD41-528
NE
P/N MD41-528 Ati
$1,564.61
Price and availability checked Oct 28, 2026 MST
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Annunciation Control Unit/28V, Horizontal, with internal relay. For use with FreeFlight (Trimble) 2000 Apr and 2101 models. MD41-628
Annunciation Control Unit/28V, Horizontal, with internal relay. For use with FreeFlight (Trimble) 2000 Apr and 2101 models. MD41-628
NE
P/N MD41-628
$1,853.99
In stock
Price check pending
Annunciation Control Unit/28V, Horizontal, with Internal Relay. For use with Honeywell KLN-900 models. MD41-928
Annunciation Control Unit/28V, Horizontal, with Internal Relay. For use with Honeywell KLN-900 models. MD41-928
NE
P/N MD41-928 Ati
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Annunciation Control Unit/5V, Horizontal, with Internal Relay. For use with Honeywell KLN-900 models. MD41-928 — photo coming soon
Annunciation Control Unit/5V, Horizontal, with Internal Relay. For use with Honeywell KLN-900 models. MD41-928
NE
P/N MD41-928 Ati
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