Part CI-503

Beechcraft · 27 listings from 6 suppliers (Aircraft Parts & Salvage, BAS Part Sales, CostAero, Safe Skies Parts, SkyGeek, Texas Air Salvage) · $35.00 – $297.53. Prices refresh weekly.

from $35
from $126
from $284

Cross references

Supplier data links this part number to: 101380043, CI1103

Price trend · weekly low by condition

WeekConditionListingsLowAvg
2026-W35used 18$35 $52
2026-W35new 1$126 $126

Description

Cessna 401 / 401A Comant Antenna Coupler Dual Glide Slope. P/N CI-503. S/N 367829. Removed in good condition from a parted out 1969 Cessna 401A N401GS, S/N 401A-0063. TTAF 14,726.8. Guaranteed to pass inspection or your money back. 30 Day Money Back Guaranteed less shipping costs. It is the buyer's responsibility to determine the parts suitability for installation and airworthiness upon inspection. We are a full service aircraft maintenance shop that sells new aircraft parts from surplus inventory auctions and parts from salvaged airplanes. We try to be as clear as possible in the descriptions of the items we have listed for sale. If you have any question regarding the suitability or condition of a part please let us know and we will have one of our mechanics check it out and give an honest answer as to it's condition. Unless otherwise noted we will ship the majority of our items via UPS. Free shipping is usually USPS. Tracking information will be sent to the E-mail account on file with Paypal, so please make sure your information is up to date. Terms and Conditions: Payment: Please pay within two (2) business days of auction's close. We accept Paypal and all major credit cards. Shipping: We will ship with in one (1) business day of receiving payment. We will gladly ship almost any item worldwide. International buyers, please contact us prior to paying. All buyers from OHIO please add 6.5% sales tax. Customs/Duties: International Buyers please be aware of Tariffs/Taxes

Price spread · 21 priced listings

$35
$40
$298
median BAS Part Sales · $35 · used CI-503 Comant Glideslope Antenna Coupler (click to open at supplier) Aircraft Parts & Salvage · $40 · used Comant Industries Glideslope Antenna Coupler (CI 503) (click to open at supplier) Aircraft Parts & Salvage · $40 · used Comant Industries Glideslope Antenna Coupler (CI 503) (click to open at supplier) Aircraft Parts & Salvage · $40 · used Comant Industries Glideslope Antenna Coupler (CI 503) (click to open at supplier) Aircraft Parts & Salvage · $40 · used Comant Industries Glideslope Antenna Coupler (CI 503) (click to open at supplier) Aircraft Parts & Salvage · $40 · used Comant Industries Glideslope Antenna Coupler (CI503) (click to open at supplier) Aircraft Parts & Salvage · $40 · used Comant Industries Glideslope Antenna Coupler (CI503) (click to open at supplier) BAS Part Sales · $40 · used CI-503 (Alt: CI-1103) Comant Antenna Coupler Assembly (click to open at supplier) BAS Part Sales · $40 · used CI-503 Comant Antenna Coupler (click to open at supplier) BAS Part Sales · $40 · used CI-503 Comant Industries Glide Slope Antenna Coupler (click to open at supplier) BAS Part Sales · $40 · used CI-503 Comant Industries Glideslope Antenna Coupler (click to open at supplier) BAS Part Sales · $40 · used CI503 Comant Industries Antenna Coupler (Glideslope) (click to open at supplier) BAS Part Sales · $40 · used CI503 Comant Industries Glideslope Coupler-Antenna (click to open at supplier) Texas Air Salvage · $75 · used CI-503 Comant - Coupler - Antenna Glide Scope CI503 (click to open at supplier) Texas Air Salvage · $75 · used CI-503 Comant - COUPLER - ANTENNA GLIDESLOPE CI503 (click to open at supplier) Safe Skies Parts · $93 · used Comant Antenna Glide Slope Coupler P/N CI503 (0125-718) (click to open at supplier) Safe Skies Parts · $93 · used Comant Antenna Coupler Dual Glide Slope P/N CI-503 (1223-1001) (click to open at supplier) Safe Skies Parts · $93 · used Comant Dual Glide Slope Coupler Antenna P/N CI-503 (0222-353) (click to open at supplier) Safe Skies Parts · $126 · new Comant Dual Glide Slope Coupler Antenna P/N CI503 NOS (1022-682) (click to open at supplier) SkyGeek · $284 Cobham Comant CI-503 Coupler Glide Slope (click to open at supplier) CostAero · $298 CI 503 GS ANTENNA COUPLER/BNC Female Connector, 329-335 MHz, 50 Ohms (click to open at supplier) $35 $298

Each dot is one listing (hover for supplier & condition); color = condition.

Price by condition · median

used (18) $40
new (1) $126
unlisted (2) $291
CI-503 Comant Glideslope Antenna Coupler BAS Part Sales
CI-503 Comant Glideslope Antenna Coupler
Comant Industries
used
$35.00 view at supplier ↗
Comant Industries Glideslope Antenna Coupler (CI 503) Aircraft Parts & Salvage
Comant Industries Glideslope Antenna Coupler (CI 503)
Removed from 1975 Beechcraft Baron 58   S# TH633
used
$40.00 view at supplier ↗
Comant Industries Glideslope Antenna Coupler (CI 503) Aircraft Parts & Salvage
Comant Industries Glideslope Antenna Coupler (CI 503)
Removed from 1977 Seneca 2 Piper PA-34-200T S# 34-7770147
used
$40.00 view at supplier ↗
Comant Industries Glideslope Antenna Coupler (CI 503) Aircraft Parts & Salvage
Comant Industries Glideslope Antenna Coupler (CI 503)
used
$40.00 view at supplier ↗
Comant Industries Glideslope Antenna Coupler (CI 503) Aircraft Parts & Salvage
Comant Industries Glideslope Antenna Coupler (CI 503)
used
$40.00 view at supplier ↗
Comant Industries Glideslope Antenna Coupler (CI503) Aircraft Parts & Salvage
Comant Industries Glideslope Antenna Coupler (CI503)
used
$40.00 view at supplier ↗
Comant Industries Glideslope Antenna Coupler (CI503) Aircraft Parts & Salvage
Comant Industries Glideslope Antenna Coupler (CI503)
used
$40.00 view at supplier ↗
CI-503 (Alt: CI-1103) Comant Antenna Coupler Assembly BAS Part Sales
CI-503 (Alt: CI-1103) Comant Antenna Coupler Assembly
alt: CI-1103
Comant Industries
used
$40.00 view at supplier ↗
CI-503 Comant Antenna Coupler BAS Part Sales
CI-503 Comant Antenna Coupler
Comant Industries
used
$40.00 view at supplier ↗
CI-503 Comant Industries Glide Slope Antenna Coupler BAS Part Sales
CI-503 Comant Industries Glide Slope Antenna Coupler
Comant Industries
used
$40.00 view at supplier ↗
CI-503 Comant Industries Glideslope Antenna Coupler BAS Part Sales
CI-503 Comant Industries Glideslope Antenna Coupler
Comant Industries
used
$40.00 view at supplier ↗
CI503 Comant Industries Antenna Coupler (Glideslope) BAS Part Sales
CI503 Comant Industries Antenna Coupler (Glideslope)
Comant Industries
used
$40.00 view at supplier ↗
CI503 Comant Industries Glideslope Coupler-Antenna BAS Part Sales
CI503 Comant Industries Glideslope Coupler-Antenna
Comant Industries
used
$40.00 view at supplier ↗
CI-503 Comant - Coupler - Antenna Glide Scope CI503 Texas Air Salvage
CI-503 Comant - Coupler - Antenna Glide Scope CI503
alt: CI 503
Avionics Antennas From a: 1975 Beechcraft Baron 95-B55
used
$75.00 view at supplier ↗
CI-503 Comant - COUPLER - ANTENNA GLIDESLOPE CI503 Texas Air Salvage
CI-503 Comant - COUPLER - ANTENNA GLIDESLOPE CI503
alt: CI 503
Avionics Antennas From a: 1963 Piper PA28-180
used
$75.00 view at supplier ↗
Comant Antenna Glide Slope Coupler P/N CI503 (0125-718) Safe Skies Parts
Comant Antenna Glide Slope Coupler P/N CI503 (0125-718)
Safe Skies Aviation, LLC, Middletown Ohio 45042 Loc.LS 58 D 4 Royalair2024-1
Comant
used
$92.95 view at supplier ↗
Comant Antenna Coupler Dual Glide Slope P/N CI-503 (1223-1001) Safe Skies Parts
Comant Antenna Coupler Dual Glide Slope P/N CI-503 (1223-1001)
Cessna 401 / 401A Comant Antenna Coupler Dual Glide Slope. P/N CI-503. S/N 367829. Removed in good condition from a parted out 1969 Cessna 4…
Comant
used
$92.95 view at supplier ↗
Comant Dual Glide Slope Coupler Antenna P/N CI-503 (0222-353) Safe Skies Parts
Comant Dual Glide Slope Coupler Antenna P/N CI-503 (0222-353)
Comant Dual Glide Slope Coupler Antenna. P/N CI-503. S/N 118870. Removed in good condition from a parted out 1980 Beech 58 Baron N700ST, S/N…
Comant
used
$92.95 view at supplier ↗
Comant Dual Glide Slope Coupler Antenna P/N CI503 NOS (1022-682) Safe Skies Parts
Comant Dual Glide Slope Coupler Antenna P/N CI503 NOS (1022-682)
Comant Dual Glide Slope Coupler Antenna.  P/N CI503.  NEW OLD STOCK.  Guaranteed to pass inspection or your money back.  30 Day Money Back…
Comant
new
$126.30 view at supplier ↗
Cobham Comant CI-503 Coupler Glide Slope SkyGeek
Cobham Comant CI-503 Coupler Glide Slope
Approvals and Conformities Product Attributes Country of Origin United States Shipping Weight 0.21 pounds ECCN 7A994 Manufac…
$283.96 view at supplier ↗
CI 503 GS ANTENNA COUPLER/BNC Female Connector, 329-335 MHz, 50 Ohms CostAero
CI 503 GS ANTENNA COUPLER/BNC Female Connector, 329-335 MHz, 50 Ohms
The CI 503 Dual Glide Slope Coupler allows the operation of two glide slope receiver from on glide slope antenna. The compact design provide…
$297.53 view at supplier ↗
CI-503 Comant - Coupler - Antenna Glide Scope CI503 Texas Air Salvage
CI-503 Comant - Coupler - Antenna Glide Scope CI503
alt: CI 503
Avionics Antennas From a: 1975 Cessna 421B Ram
used
Ask / RFQ view at supplier ↗
CI 503 Comant - VOR Antenna Coupler Splitter Texas Air Salvage
CI 503 Comant - VOR Antenna Coupler Splitter
alt: 101-380043
Avionics Antennas From a: 1964 Cessna 310I
used
Ask / RFQ view at supplier ↗
CI-503 Comant - Coupler - Antenna Glide Scope CI503 Texas Air Salvage
CI-503 Comant - Coupler - Antenna Glide Scope CI503
alt: CI 503
Avionics Antennas From a: 1967 Beechcraft 95-C55
used
Ask / RFQ view at supplier ↗
CI-503 Comant - Coupler - Antenna Glide Scope CI503 Texas Air Salvage
CI-503 Comant - Coupler - Antenna Glide Scope CI503
alt: CI 503
Avionics Antennas From a: 1979 Cessna R182
used
Ask / RFQ view at supplier ↗
CI-503 Comant - Coupler - Antenna Glide Scope CI503 Texas Air Salvage
CI-503 Comant - Coupler - Antenna Glide Scope CI503
alt: CI 503
Avionics Antennas From a: 1966 Beechcraft A23-24 Super III Musketeer
used
Ask / RFQ view at supplier ↗
CI-503 Comant - COUPLER - ANTENNA GLIDESLOPE CI503 Texas Air Salvage
CI-503 Comant - COUPLER - ANTENNA GLIDESLOPE CI503
alt: CI 503
Avionics Antennas From a: 1960 Beechcraft B95
used
Ask / RFQ view at supplier ↗

Listed under cross-referenced part numbers