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1980 MOONEY M20K 231
Starts from the median asking price of 17 comparable Mooney M20K 231 listings ($149,000), then adjusts for:
- Airframe time +665 hr vs comps -1.3%
- Engine time +70 hr vs comps -0.6%
- Modern GPS navigator (47% of comps) +2.5%
- ADS-B (71% of comps) +0.8%
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 | 3,990 hrs |
| Engine time | 1,192.2 SMOH |
| Prop blades | 2 |
| Avionics / GPS | Garmin GNS 530 |
| Avionics / Primary flight display | Nighthawk SN3500, GARMIN GI 275 |
| Avionics / Nav / com radio | Garmin SL30 |
| Avionics / GPS / nav | GNS 530W |
| Avionics / Autopilot | Century 41 |
| Inspection | Annual |
Description
1980 Mooney M20K 231 with 3,990.9 hours total time, 1,192.2 hours since engine overhaul and only 49.8 hours since propeller overhaul. Well-equipped IFR panel featuring a Garmin GNS 530W, Garmin SL30, Garmin GI 275, Sandel SN3500 EHSI, Century 41 autopilot, Stratus ESG ADS-B and JPI EDM-730 engine monitor. Additional equipment includes a TurboPlus intercooler, and portable oxygen. The aircraft has been hangared throughout the current ownership, and its 1997 white and dark navy exterior remains in stunning, owner-rated 9/10 condition. Complete logbooks. Annual completed July 2026.
Modifications
TurboPlus intercooler TurboPlus pneumatic speed brakes currently inoperative Electric trim Strobes ACK E-04 406 MHz ELT Portable oxygen bottle with floor clamp included Cabin heater
Avionics
PS Engineering PMA7000B audio panel Garmin GNS 530 GPS/NAV/COM Garmin SL30 NAV/COM Garmin GI 275 Sandel SN3500 EHSI Century 41 autopilot/flight director Stratus ESG ADS-B transponder WX-500 Stormscope Bendix/King KN62A DME Bendix/King KN87 ADF RMI JPI EDM-730 engine monitor Standby flight instruments
Recommended avionics upgrades
A GNS 530 is a drop-in upgrade to the GTN 750Xi — bigger touchscreen, WAAS/LPV, and modern nav/comm/MFD.
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…
How this aircraft compares
Where this Mooney M20K 231 lands versus other Mooney M20K 231 listings on fyiAero.
Price
35th pct$120k · 35th percentile of 17 listings
Airframe time
69th pct3,990 hours total (TTAF) · 69th percentile of 16 listings
Engine time
81st pct1,192 hours since major overhaul · 81st percentile of 16 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 | 1980 |
|---|---|
| Manufacturer | MOONEY |
| Model | M20K 231 |
| Serial Number | 25-0346 |
| Registration # | C-GMRK |
| Condition | Used |
| FlightRules | IFR |
Airframe
| Total Time | 3,990.9 |
|---|---|
| Max Takeoff Weight | 2,900 lb |
| Useful Load | 927.4 lb |
| Fuel Capacity Volume | 75.6 gal |
Engine
| Engine 1 Make/Model | CONTINENTAL TSIO360LB1B |
|---|---|
| Engine 1 Time | 1,192.2 SMOH |
| Engine TBO | 2000 |
| Year Engine Overhauled or Installed as New | 1993 |
Props
| Prop Manufacturer | MCCAULEY |
|---|---|
| Prop Time | 49.8 |
| Number of Blades | 2 |
Avionics
| Avionics/Radios | PS Engineering PMA7000B audio panel Garmin GNS 530 GPS/NAV/COM Garmin SL30 NAV/COM Garmin GI 275 Sandel SN3500 EHSI Century 41 autopilot/flight director Stratus ESG ADS-B transponder WX-500 Stormscope Bendix/King KN62A DME Bendix/King KN87 ADF RMI JPI EDM-730 engine monitor Standby flight instruments |
|---|
Additional Equipment
| Additional Equipment | TurboPlus intercooler TurboPlus pneumatic speed brakes currently inoperative Electric trim Strobes ACK E-04 406 MHz ELT Portable oxygen bottle with floor clamp included Cabin heater |
|---|
Exterior
| Year Painted | 2007 |
|---|
Inspection Status
| Inspection Status | Annual inspection completed July 2, 2026 |
|---|
Operating costs & specifications — Mooney M20K 231
Typical model-level figures for the Mooney M20K 231 (not this specific airframe).
Performance & dimensions
| Range | 980 nm |
|---|---|
| Cruise speed | 191 kts · 220 mph |
| Takeoff / landing | 1220.0 / 1147.0 |
About this plane
Single engine piston aircraft with retractable landing gear. The M20K 231 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 C-GMRK. More flight tracking ›
