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Single-Engine Piston

1981 Beech Sundowner C-23

🕒 Listed 10 days ago
Call for price
fyiEstimate $316,500–$324,500 ⓘ How this estimate is built

Starts from the median asking price of 98 comparable Beechcraft Single-Engine Piston listings ($296,500), then adjusts for:

  • Year +1 vs comparable listings +1.5%
  • Modern GPS navigator (70% of comps) +1.4%
  • ADS-B (71% of comps) +0.7%
  • Market supply: 4 for sale of 455 FAA-registered +4.3%

Shown as a range. An estimate from asking-price comparables and FAA supply data — not an appraisal.

1981
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N174DQ ✈ Flight Tracking
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M2310
Lycoming O-360-A4K 580 Engine Overhauled in April 2002 at 2322
1
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Overview

Make / ModelBeechcraft C23 SUNDOWNER
TypeSingle-Engine Piston
Airframe time—
Avionics / GPSGarmin GNS 430
Avionics / TransponderGarmin GTX 330
Avionics / Audio panelGARMIN GMA 340
ADS-BYes
InspectionAnnual
Garmin GPS Autopilot ADS-B

Description

ADS-B Out. Garmin Upgrades. Only 580 hrs since engine overhaul. Information for Auction. Dates: 11/11/2026-11/18/2026. Reserve: $75,000. Minimum Bid: $55,000. Buyer Premium – 6%. Deposit Required: $5,000. Listing Agent: Gordon Ramsay

Modifications

1981 Beech Sundowner C-23 Back Exterior 16 Photos Price on request S/N: M2310 R/N: N174DQ 2,890 Total Hours Rhode Island, United States Compare Email to Friend Date Listed: Oct 23, 2026 Seller Paragraph Seller Aircraft Bidder Location Springfield, OH, US ADS-B Out Garmin Upgrades Only 580 hrs since engine overhaul Information for Auction Dates: 11/11/2026-11/18/2026 Reserve: $75,000 Minimum Bid: $55,000 Buyer Premium – 6% Deposit Required: $5,000 Listing Agent: Gordon Ramsay Airframe & Power Systems Information Total Hours 2,890 Total Hours Engines Loc. Make Model SMOH C Lycoming O-360-A4K 580 Engine Overhauled in April 2002 at 2322.34 TT, Compressions as of May 2026: 72, 74, 70, 72. Lightweight Sky-tec Starter Propellers Loc. Make SPOH C Sensenich 651 2-Bladed Propeller, Overhauled Performed at 2239.18 TT Rocky Mountain Propeller Maintenance & Condition Annual Performed May 2026 ELT Battery Due March 2027 803 Lbs. Useful Load New Windshield Installed 9/2022 Avionics Garmin GNS 430 GPS/NAV/COM Garmin GMA340 Audio Panel Garmin GTX 330 Transponder King ILS/LOC/VOR Indicator King LOC/VOR Indicator MAC 1700 NAVCOM King KR-86 ADF (INOP) King KN-62A DME w/NAV 1&2 NorthStar M1 Loran Century I Autopilot w/ 1,2, & Loran Select SkyBeacon ADS-B Out Electronics International Digital Volt Meter Additional Features Vent Blower Precise Standby Vacuum System Tanis Heater Dual Flight Controls and Brakes Dual 25 Amp-hr Batteries UAvionix SkyBeacon Whelen Wing Strobe Lights SUBJECT TO PRIOR SALE OR REMOVAL FROM AUCTION. Interior # of Seats: 4 Marine Blue Fabric Striped Seats with Navy Trim and Blue Carpet Carpet Replaced in 2022 Exterior Overall Matterhorn White with Aristo Blue and Marlin Blue Trim Comments Aircraft Bidder is pleased to present this 1981 Beech C23 Sundowner. Known for its roomy cabin, dual entry doors, exceptional stability, and smooth handling, N174DQ is an ideal cross-country cruiser, time-builder, or family platform. This aircraft is equipped with updated Garmin avionics and low hours since engine overhaul and is ready for its next owner. Please visit AircraftBidder.com for more information. Contact Information Contact: Gordon Ramsay Tel: (833) 824-7243 1251 Blee Road Hangar 1 Springfield, OH 45502 All Specifications Subject to Verification Upon Inspection Availability Subject to Prior Lease, Sale, or Withdrawal From Market Without Notice Subject to prior Sale or Removal from Auction An Important Note About Buying An Aircraft Aircraft Shopper Online takes internet fraud very seriously. Before completing any transaction, please review our fraud prevention guidelines to protect yourself. Read our Fraud Alert → Report This Ad Listed By Aircraft Bidder Springfield, OH, US Website Contact Seller More Listings from the Seller Finance Calculator Enter the advertised purchase price in the full calculator to estimate financing. View Detailed Calculator Get Pre-Approved For illustrative purposes only. Actual rates and terms may vary.

Recommended avionics upgrades

Garmin GTN 650Xi

A GNS 430 upgrades naturally to the GTN 650Xi — same footprint, touchscreen GPS/nav/comm with LPV approaches.

See prices & suppliers ›

Suggestions are based on the panel described in this listing; verify STC approval for this make/model before any installation.

Service Difficulty Reports (SDRs)

Checking FAA service difficulty reports…

Airworthiness Directives (ADs)

Checking airworthiness directives…

Operating costs & specifications — Beechcraft C23 Sundowner

Typical model-level figures for the Beechcraft C23 Sundowner (not this specific airframe).

$19,708annual budget · 138 hrs/yr
$86variable cost / hour
$0.74cost per nm
9.5gph fuel burn
$88,795avg pre-owned asking fyiEstimate  $316,500–$324,500

Performance & dimensions

Range565 nm
Cruise speed116 kts · 133 mph
Takeoff / landing1130.0 / 703.0

About this plane

Single engine piston aircraft with fixed landing gear. The C23 Sundowner seats up to 3 passengers plus 1 pilot.

Range from base

Still-air range ring — type an aircraft to change it. Compare aircraft on the Range tool ›

Last flight

Actual flight path from FlightAware for N174DQ. More flight tracking ›