1980 MOONEY M20K 231
Starts from the median asking price of 26 comparable MOONEY M20K 231 listings ($154,500), then adjusts for:
- Airframe time +865 hr vs comps -1.7%
- Engine time -65 hr vs comps +0.2%
- 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 | 4,083 hrs |
| Engine time | 904 SFRM |
| Avionics / GPS | Garmin GNS 430 |
| Avionics / Other | Garmin Aera 760, Garmin GNS-430W |
| Inspection | Annual |
Description
Detailed Description 1980 Mooney M20K 231 - N66RJ - NDH, 904 SFRM LB Engine, Merlyn + Intercooler - $159,000 Fully sorted, continuously upgraded 231 with the engine and turbo configuration every Mooney buyer is looking for. No damage history. This airplane received a nose-to-tail refurbishment beginning in 2022 and presents in excellent condition inside and out, with complete logs and extensive documentation. Fresh annual March 2026. Engine & Prop - the right setup: Continental TSIO-360-LB factory rebuilt/zero-timed by Continental 9/29/2000 - now just 904 SFRM. The LB is the desirable cool-running variant, further upgraded with the Merlyn automatic upper-deck wastegate and intercooler conversion - lower TITs and CHTs, higher critical altitude, stronger high-altitude cruise. New turbocharger, flow divider, and engine-driven fuel pump in 2021. Complete new exhaust system in 2025. Prop overhauled concurrent with engine - 904 SPOH. Engine zero-timed with fresh Continental logbook - full traceability since rebuild. Airframe - 4,083 TT, No Damage History: Complete strip and reseal of fuel tanks by Wet Wingologists East, 2023 ($15,000) - the tank question is answered on this airplane New custom paint by Hawk Aircraft, 2023 (completed after the reseal - done in the right order) Speed brakes completely overhauled with new cables Empty weight 1,963.2 lbs (new W&B March 2026) - 936.8 lb useful load Annual completed March 13, 2026 Interior: New custom interior, 2023. Excellent throughout. Avionics & Autopilot: Garmin GNS 430W (WAAS), ADS-B In/Out, Garmin Aera 760 hard-wired in the panel. King KFC 200 autopilot with flight director - fully functional and flying great. Complete logbooks. This is not a project or a flip - it's an airplane that's had the money spent, with receipts to prove it. Turn-key, ready to go fast and high. Complete logbooks. This is not a project or a flip - it's an airplane that's had the money spent, with receipts to prove it. Turn-key, ready to go fast and high. • Complete strip and reseal of fuel tanks by Wet Wingologists East, 2023 ($15,000) - the tank question is answered on this airplane • New custom paint by Hawk Aircraft, 2023 (completed after the reseal - done in the right order) • Speed brakes completely overhauled with new cables • Empty weight 1,963.2 lbs (new W&B March 2026) - 936.8 lb useful load • Annual completed March 13, 2026
Modifications
Continental TSIO-360-LB factory rebuilt/zero-timed by Continental 9/29/2000 - now just 904 SFRM. The LB is the desirable cool-running variant, further upgraded with the Merlyn automatic upper-deck wastegate and intercooler conversion - lower TITs and CHTs, higher critical altitude, stronger high-altitude cruise. New turbocharger, flow divider, and engine-driven fuel pump in 2021. Complete new exhaust system in 2025. Prop overhauled concurrent with engine - 904 SPOH. Engine zero-timed with fresh Continental logbook - full traceability since rebuild.
Avionics
Garmin GNS 430W (WAAS), ADS-B In/Out, Garmin Aera 760 hard-wired in the panel. King KFC 200 autopilot with flight director - fully functional and flying great.
How this aircraft compares
Where this MOONEY M20K 231 lands versus other MOONEY M20K 231 listings on fyiAero.
Price
69th pct$157k · 69th percentile of 26 listings
Airframe time
78th pct4,083 hours total (TTAF) · 78th percentile of 27 listings
Engine time
48th pct904 hours since factory reman · 48th 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.