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1979 MOONEY M20K 231
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%
- Engine time +740 hr vs comps -2.2%
- Garmin GTN 750Xi (uncommon in comps) +3.5%
- 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.
Overview
| Make / Model | MOONEY M20K 231 |
|---|---|
| Type | Single-Engine Piston |
| Airframe time | 3,218 hrs |
| Engine time | 1,709.1 SMOH |
| Prop blades | 3 |
| Avionics / GPS | Garmin GTN 750Xi |
| Avionics / Transponder | Garmin GTX330 |
| Avionics / Other | Garmin GDL 69A, Garmin GDL 50 |
| ADS-B | Yes |
| Annual | June 2026 |
| Inspection | Annual |
| Airworthy | Yes |
Description
1979 MOONEY 231 Over $100,000 in avionics! Garmin G3X 10.6" Touchscreen, Garmin GFC 500 3 AXIS with YAW with SMARTGLIDE, Garmin GTN 750XI (DUAL), Garmin GMA 35C Audio Panel W/Bluetooth, Garmin GTX330DES Transponder, Garmin GDL 88 ADSB IN/OUT, Garmin GDL 69A XM Music and Weather, Garmin GDL 50 FOR Traffic on G3X Display, EDM 930 Engine Monitor. Speedbrakes,Turbo Plus Intercooler, Merlin Wastegate, Guardian Co2 Detector, 2014 PAINT AND 2021 INTERIOR, CLICK ON DISPLAY SPECS Page. Annual Inspection - 6/2026
Modifications
EQUIPMENT: MCCAULEY 3 BLADE SCIMITAR PROPELLER PRECISE FLIGHT SPEED BRAKES TURBO PLUS INTERCOOLER MERLIN WASTEGATE CEIS FUEL SENDERS GUARDIAN CO2 CARBON MONOXIDE DETECTOR WHELEN LED NAV/STROBE LIGHTS WHELEN LED LANDING LIGHTS WHELEN LED BEACON LIGHT JET SHADES ROSEN SUNVISORS
Avionics
Over $100,000 in avionics! Garmin G3X 10.6" Touchscreen Garmin GFC 500 3 AXIS with YAW with SMARTGLIDE Garmin GTN 750XI (DUAL) Garmin GMA 35C Audio Panel W/Bluetooth Garmin GTX330DES Transponder Garmin GDL 88 ADSB IN/OUT Garmin GDL 69A XM Music and Weather Garmin GDL 50 FOR Traffic on G3X Display EDM 930 Engine Monitor
How this aircraft compares
Where this MOONEY M20K 231 lands versus other MOONEY M20K 231 listings on fyiAero.
Price
88th pct$185k · 88th percentile of 26 listings
Airframe time
56th pct3,218 hours total (TTAF) · 56th percentile of 27 listings
Engine time
96th pct1,709 hours since major overhaul · 96th 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.
General
| Year | 1979 |
|---|---|
| Manufacturer | MOONEY |
| Model | M20K 231 |
| Serial Number | 25-0155 |
| Registration # | N231DD |
| Condition | Used |
| FlightRules | IFR |
| Based at | KMEV |
Airframe
| Total Time | 3,218.4 |
|---|---|
| Speedbrakes | Yes |
Engine
| Engine 1 Make/Model | CONTINENTAL TSIO360GB |
|---|---|
| Engine Horsepower | 210 HP |
| Engine 1 Time | 1,709.1 SMOH |
| Engine TBO | 1800 |
| Year Engine Overhauled or Installed as New | 1993 |
| Turbocharged | Yes |
Props
| Prop Manufacturer | MCCAULEY |
|---|---|
| Prop Time | 504.7 SNEW |
| Number of Blades | 3 |
| Blade Composition | Aluminum |
Avionics
| ADS-B Equipped | Yes |
|---|---|
| WAAS | Yes |
| LPV | Yes |
| SVT | Yes |
| Yaw Damper | Yes |
| Active Traffic | Yes |
| Engine Monitor | Yes |
| Avionics/Radios | Over $100,000 in avionics! Garmin G3X 10.6" Touchscreen Garmin GFC 500 3 AXIS with YAW with SMARTGLIDE Garmin GTN 750XI (DUAL) Garmin GMA 35C Audio Panel W/Bluetooth Garmin GTX330DES Transponder Garmin GDL 88 ADSB IN/OUT Garmin GDL 69A XM Music and Weather Garmin GDL 50 FOR Traffic on G3X Display EDM 930 Engine Monitor |
Additional Equipment
| Additional Equipment | EQUIPMENT: MCCAULEY 3 BLADE SCIMITAR PROPELLER PRECISE FLIGHT SPEED BRAKES TURBO PLUS INTERCOOLER MERLIN WASTEGATE CEIS FUEL SENDERS GUARDIAN CO2 CARBON MONOXIDE DETECTOR WHELEN LED NAV/STROBE LIGHTS WHELEN LED LANDING LIGHTS WHELEN LED BEACON LIGHT JET SHADES ROSEN SUNVISORS |
|---|
Interior
| Year Interior | 2021 |
|---|
Exterior
| Year Painted | 2014 |
|---|
Inspection Status
| Inspection Status | A&P/IA Owned for LAST 10 Years FRESH ANNUAL INSPECTION - June 2026 |
|---|---|
| Airworthy | Yes |
