Transponders
ATA · 347 parts
Transponders brings together the parts, hardware, and consumables your maintenance program calls out for this system. Each listing shows its condition and the certification paperwork available for that part, from new PMA/OEM stock to overhauled and serviceable units, so you can confirm airworthiness before buying and request an FAA 8130-3 or manufacturer Certificate of Conformance where one applies.
Encoder/5 Channels RS232/80K/Ex Temp SSD120-80NE-RS5
P/N SSD120-80NE-RS5
NE
Trans-Cal Industries
Quote only
Backorder
Alt Encoder/429HS To Gray Code 8800-02-01
P/N 8800-02-01
NE
Shadin
$2,473.50
Price and availability checked Oct 29, 2026 MST
Backorder
SSD120 Mounting Tray 881022
P/N 881022
NE
Trans-Cal Industries
$54.56
Price and availability checked Oct 29, 2026 MST
Backorder
SSD120 Mounting Tray Knob 881023
P/N 881023
NE
Trans-Cal Industries
$16.37
Price and availability checked Oct 29, 2026 MST
Backorder
Replacement SSD120 Mounting Tray Knob 881023
P/N 881023
NE
Trans-Cal Industries
$16.37
Price and availability checked Oct 29, 2026 MST
Backorder
$231.19
Price and availability checked Oct 29, 2026 MST
Backorder
$326.65
Price and availability checked Oct 29, 2026 MST
In stock
Mounting Tray/Includes: A-30E-1 nut and A-30E-2 bolt. For use with A-30. A30.03
P/N A30.03
NE
ACK Technologies
$16.73
Price and availability checked Oct 29, 2026 MST
Backorder
Add-On Wire Kit/For use with A-30. A30.11.02
P/N A30.11.02
NE
Wire
$6.01
Price and availability checked Oct 29, 2026 MST
Backorder
Mission Darkness Atc Transponder Faraday Shield. Used to reduce aircraft transponder Rf leakage and interference. Overall cover dimensions 46 x 32 (dimensions include 4 TitanRF Faraday tape border) Mdff-Atc-Shield
P/N MDFF-ATC-SHIELD
NE
Mission Darkness
$196.43
Price and availability checked Oct 29, 2026 MST
In stock
Encoder Tester & Simulator ATS-400
P/N ATS-400
NE
Trans-Cal Industries
$1,804.20
Price and availability checked Oct 29, 2026 MST
Backorder
Encoder/100K/Hi Temp/Nano SSD120-100NE
P/N SSD120-100NE
NE
Trans-Cal Industries
Quote only
Backorder
D-120 Encoder/20K'/TSO D120-P2-T (20K)
P/N D120-P2-T (20K)
NE
Trans-Cal Industries
$2,013.72
Price and availability checked Oct 29, 2026 MST
Backorder
D-120 Encoder/25K'/TSO D120-P2-T (25K)
P/N D120-P2-T (25K)
NE
Trans-Cal Industries
$2,119.45
Price and availability checked Oct 29, 2026 MST
Backorder
D-120 Encoder/30K'/TSO D120-P2-T (30K)
P/N D120-P2-T (30K)
NE
Trans-Cal Industries
$2,217.42
Price and availability checked Oct 29, 2026 MST
Backorder
Altitude Encoder Calibration Programmer ECP-100
P/N ECP-100
NE
Ati
$839.99
In stock
Encoder Emulator Tester Eet 200
P/N EET 200
NE
Trans-Cal Industries
$388.00
Price and availability checked Oct 29, 2026 MST
Backorder
Dual Interface Adapter IA-RS232C-D
P/N IA-RS232C-D
NE
Trans-Cal Industries
$1,166.91
Price and availability checked Oct 29, 2026 MST
Backorder
Interface Adapter (serializer). Converts parallel 10-bit Icao pressure altitude code to a fan out of RS232 compliant outputs. IA-RS232C-s
P/N IA-RS232C-s
NE
Trans-Cal Industries
$1,169.46
Price and availability checked Oct 29, 2026 MST
Backorder
Replacement Kit/For use with SSD120-(XX)N series. SSD120-(XX)N Kit
P/N SSD120-(XX)N KIT
NE
Trans-Cal Industries
$18.92
In stock
Mission Darkness Atc Transponder Faraday Shield/Without Border Tape Mdff-Atc-Shield - No Tape Borders
P/N MDFF-ATC-SHIELD - NO TAPE BORDERS
NE
Mission Darkness
$137.99
In stock
Encoder/5 Channels RS232/80K/Ex Temp SSD120-80NE-RS5
NE
P/N SSD120-80NE-RS5
Trans-Cal Industries
Quote only
Backorder
Alt Encoder/429HS To Gray Code 8800-02-01
NE
P/N 8800-02-01
Shadin
$2,473.50
Price and availability checked Oct 29, 2026 MST
Backorder
SSD120 Mounting Tray 881022
NE
P/N 881022
Trans-Cal Industries
$54.56
Price and availability checked Oct 29, 2026 MST
Backorder
SSD120 Mounting Tray Knob 881023
NE
P/N 881023
Trans-Cal Industries
$16.37
Price and availability checked Oct 29, 2026 MST
Backorder
Replacement SSD120 Mounting Tray Knob 881023
NE
P/N 881023
Trans-Cal Industries
$16.37
Price and availability checked Oct 29, 2026 MST
Backorder
Altitude Encoder/30K, TSO, Includes: Quick release mounting tray, 4 ft harness, 4 ft static line, installation manual, 3 year guarantee, gray, code output to 30,750 feet. A-30.5
NE
P/N A-30.5
Ati
$231.19
Price and availability checked Oct 29, 2026 MST
Backorder
Altitude Encoder/42K, dual RS232 outputs. Includes: Quick release mounting tray, 4 harness, static line, installation manual, 3 year guarantee, gray, code output to 42,000 feet. A-30.9
NE
P/N A-30.9
Ati
$326.65
Price and availability checked Oct 29, 2026 MST
In stock
Mounting Tray/Includes: A-30E-1 nut and A-30E-2 bolt. For use with A-30. A30.03
NE
P/N A30.03
ACK Technologies
$16.73
Price and availability checked Oct 29, 2026 MST
Backorder
Add-On Wire Kit/For use with A-30. A30.11.02
NE
P/N A30.11.02
Wire
$6.01
Price and availability checked Oct 29, 2026 MST
Backorder
Mission Darkness Atc Transponder Faraday Shield. Used to reduce aircraft transponder Rf leakage and interference. Overall cover dimensions 46 x 32 (dimensions include 4 TitanRF Faraday tape border) Mdff-Atc-Shield
NE
P/N MDFF-ATC-SHIELD
Mission Darkness
$196.43
Price and availability checked Oct 29, 2026 MST
In stock
Encoder Tester & Simulator ATS-400
NE
P/N ATS-400
Trans-Cal Industries
$1,804.20
Price and availability checked Oct 29, 2026 MST
Backorder
Encoder/100K/Hi Temp/Nano SSD120-100NE
NE
P/N SSD120-100NE
Trans-Cal Industries
Quote only
Backorder
D-120 Encoder/20K'/TSO D120-P2-T (20K)
NE
P/N D120-P2-T (20K)
Trans-Cal Industries
$2,013.72
Price and availability checked Oct 29, 2026 MST
Backorder
D-120 Encoder/25K'/TSO D120-P2-T (25K)
NE
P/N D120-P2-T (25K)
Trans-Cal Industries
$2,119.45
Price and availability checked Oct 29, 2026 MST
Backorder
D-120 Encoder/30K'/TSO D120-P2-T (30K)
NE
P/N D120-P2-T (30K)
Trans-Cal Industries
$2,217.42
Price and availability checked Oct 29, 2026 MST
Backorder
Altitude Encoder Calibration Programmer ECP-100
NE
P/N ECP-100
Ati
$839.99
In stock
Price check pending
Encoder Emulator Tester Eet 200
NE
P/N EET 200
Trans-Cal Industries
$388.00
Price and availability checked Oct 29, 2026 MST
Backorder
Dual Interface Adapter IA-RS232C-D
NE
P/N IA-RS232C-D
Trans-Cal Industries
$1,166.91
Price and availability checked Oct 29, 2026 MST
Backorder
Interface Adapter (serializer). Converts parallel 10-bit Icao pressure altitude code to a fan out of RS232 compliant outputs. IA-RS232C-s
NE
P/N IA-RS232C-s
Trans-Cal Industries
$1,169.46
Price and availability checked Oct 29, 2026 MST
Backorder
Replacement Kit/For use with SSD120-(XX)N series. SSD120-(XX)N Kit
NE
P/N SSD120-(XX)N KIT
Trans-Cal Industries
$18.92
In stock
Price check pending
Mission Darkness Atc Transponder Faraday Shield/Without Border Tape Mdff-Atc-Shield - No Tape Borders
NE
P/N MDFF-ATC-SHIELD - NO TAPE BORDERS
Mission Darkness
$137.99
In stock
Price check pending