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Single-Engine Piston

1979 MOONEY M20K 231

McAllen, TX · USA
$139,900 fyiEstimate $157,500–$161,500 How this estimate is built

Starts from the median asking price of 26 comparable MOONEY M20K 231 listings ($154,500), then adjusts for:

  • Year -1 vs comparable listings -1.5%
  • Airframe time -335 hr vs comps +0.7%
  • Modern GPS navigator (uncommon in comps) +3.0%
  • Market supply: 31 for sale of 770 FAA-registered +1.0%

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

1979
2,883 hrs
N231HH
25-0100
2
Valiair Lc Trustee LLC
Per the FAA aircraft registry (public record)

Overview

Make / ModelMOONEY M20K 231
TypeSingle-Engine Piston
Airframe time2,883 hrs
Engine time973 SNEW
InspectionAnnual
Garmin GPS Autopilot

Description

Detailed Description Get a fast-cross country machine with a turbo engine & brand new instrument panel and interior that can get you speeds of up to 200 knots at FL240 for less than the price of a Cessna 172 Aircraft will be delivered with a fresh annual to be completed in early July 2026 -IFR check due in June 2027 -Hydro check for oxygen bottle due in January 2028 -ELT battery replacement due in September 2029 Extras included: -Bruce Custom Cover with cowl cover -O2D2 Mountain High oxygen regulator computer for 2 people -Oxygen lines and cannulas for 4 people from Mountain High -Lightspeed Zulu headset with Bluetooth Aircraft has always been hangared. Complete logs available upon request. Aircraft will be delivered with a fresh annual to be completed in early July 2026 -IFR check due in June 2027 -Hydro check for oxygen bottle due in January 2028 -ELT battery replacement due in September 2029 Extras included: -Bruce Custom Cover with cowl cover -O2D2 Mountain High oxygen regulator computer for 2 people -Oxygen lines and cannulas for 4 people from Mountain High -Lightspeed Zulu headset with Bluetooth Aircraft has always been hangared. Complete logs available upon request. 1979 Mooney M20K 231 with new interior and instrument panel and loaded with the upgrades Mooney buyers look for. Engine has 973 HRS TT SNEW and 394 HRS since IRAN with a 394 HRS SOH 2 blade-McCauley prop (aircraft remains flying so times will change). Equipped with a Garmin GTN 650 Xi WAAS + Bluetooth GPS, Garmin GNC 215 NAV/COM, GMA 345 Bluetooth digital audio box, 2-blade McCauley prop, speed brakes, Turboplus intercooler, prop de-ice, built-in oxygen, JPI engine monitor, new MH 115 CU FT kevlar oxygen bottle and extensive upgrades throughout! Fast, efficient, and capable. This well-equipped 231 offers great cross-country performance, beautiful new interior and a low operating cost!

Modifications

-Model: TSIO 360 LB8 -TBO: 1,800 HRS -TT SNEW: 973 HRS -TT SINCE IRAN: 394 HRS (note: engine was removed, openned, inspected and repaired as necessary to operating limits in 2016 after prop strike). -Horsepower: 210 HP Turbo with a 24,000 FT cieling -Mag 500 hrs inspection done 47 hrs ago (June 2025) Extras: -Turboplus intercooler which boosts MP up to 3" while keeping the engine at cooler temperatures -Tunned GAMI injectors installed which allow the aircraft to cruise LOP at 8.5 gal/hr / 150 TAS / 10,000 FT (7.5 hrs + reserves endurance or 1,000 NM+ range) or ROP at 12.5 gal/hr / 165 TAS / 10,000 Propeller: McCaulley 2 blade prop with de-icers TBO: 2,000 HRS SOH: 394 Hrs (note: propeller was overhauled with hub and blades replaced in 2016 after a prop strike) Pay for the price of a 900+ engine while getting an engine and prop that were inspected, replaced parts and brought to operating standards just 394 hrs ago.

Avionics

New instrument and cutout panel installed in 2025 by a Garmin Dealer specialized shop: -Garmin GTN 650 Xi WAAS GPS + Bluetooth (Flighstream 510) -Garmin GNC 215 NAV/COM -GMA 345 Bluetooth digital audio box and 4 place intercom -JPI 830 engine monitor installed in 2023 -406 Artex ELT 345 installed in 2023 -Appareo Stratus ESG ADSB-Out Transponder -Stratus Sentry ADSB-In antenna -King package instruments (KI-256 Attitude Indicator + KI-203 VOR/LOC + KI-525A HSI) -King KFC 200 Autopilot and Flight director (replaced flight computer and roll servo in 2025; AP is OPERATIONAL) -Aerosonic 102200 Encoding Altimeter -USB charching outlet -Electric trim -Precise Flight Speed Breaks -115 Cubic FT Kevlar Oxygen bottled installed in 2023 (next hydro check Jan-2028) -MH 02D2 oxygen regulator computer included (2-people system that duplicates oxy endurance) -Next IFR check due June-2027

How this aircraft compares

Where this MOONEY M20K 231 lands versus other MOONEY M20K 231 listings on fyiAero.

Price

38th pct
$105k$198kThis aircraft · $140k

$140k · 38th percentile of 26 listings

Airframe time

41st pct
1,9846,594This aircraft · 2,883

2,883 hours total (TTAF) · 41st percentile of 27 listings

Engine time (Engine 1)

56th pct
701,810This aircraft · 973

973 hours since new · 56th percentile of 27 listings

Percentile = share of comparable listings at or below this value. Lower airframe/engine hours are generally fresher; price reflects the asking price only.