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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%
- Airframe time +2,168 hr vs comps -4.3%
- Engine time +388 hr vs comps -1.2%
- 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 | 5,386 hrs |
| Engine time | 1,357 SMOH |
| Avionics / GPS | Garmin GNS 530 |
| Avionics / Other | Garmin GNS-530W |
Description
Aircraft located at Palo Alto Airport (KPAO) in Palo Alto, CA (25-minute drive from San Francisco International Airport) No known damage history Always US-based Excellent maintenance pedigree by the Mooney experts at LASAR and Absolute Aero Complete logbook PDF’s and high-resolution photo gallery available by email request Annual inspection due 10/2026 IFR certification due 3/2028 ELT battery due 3/2032 All FAA AD’s in compliance Max Gross Takeoff Weight: 2900 pounds Basic Empty Weight: 1886 pounds Useful Load: 1014 pounds Usable Fuel Capacity: 72 gallons Empty CG: 43.07 inches
Modifications
SureFly electronic ignition system turboGAMIjectors (customized tuned fuel injectors) LoPresti Speed Merchants Hubba Bubba main landing gear wheel covers M-20 air oil separator Wingtip LED recognition/nav lights Lake Aero Styling modified nose gear truss bushing Mooney alternate air door modification
Avionics
Garmin GFC 500 autopilot with altitude hold, LVL (return-to-level mode button), ESP (Electronic Stability and Protection), underspeed and overspeed protection, and electric trim. Garmin G5 electronic attitude indicator/flight director Garmin G5 electronic HSI Garmin GNS 530W #1 WAAS GPS/Nav/Comm King KX 170B #2 Nav/Comm JPI EDM 900 color engine management system Appareo Stratus ES ADS-B Out transponder Garmin GMA 340 audio panel Artex ELT 345 406mhz ELT Precision Aviation PAI 700 vertical compass card All electric (vacuum system removed)
How this aircraft compares
Where this MOONEY M20K 231 lands versus other MOONEY M20K 231 listings on fyiAero.
Price
19th pct$115k · 19th percentile of 26 listings
Airframe time
93rd pct5,386 hours total (TTAF) · 93rd percentile of 27 listings
Engine time
78th pct1,357 hours since major overhaul · 78th 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 | 25-0022 |
| Registration # | N231KD |
| Condition | Used |
| FlightRules | IFR |
| Based at | KPAO (Palo Alto, CA) - 25 minute drive from San Francisco International Airport |
Airframe
| Total Time | 5,386 |
|---|---|
| Complete Logs | Yes |
Engine
| Engine 1 Make/Model | CONTINENTAL TSIO360LB |
|---|---|
| Engine 1 Time | 1,357 SMOH |
| Engine TBO | 1800 |
| Year Engine Overhauled or Installed as New | 2012 |
Props
| Prop Manufacturer | MT |
|---|---|
| Prop Model | MTV-12-D |
| Prop Time | 449 SNEW |
Avionics
| Avionics/Radios | Garmin GFC 500 autopilot with altitude hold, LVL (return-to-level mode button), ESP (Electronic Stability and Protection), underspeed and overspeed protection, and electric trim. Garmin G5 electronic attitude indicator/flight director Garmin G5 electronic HSI Garmin GNS 530W #1 WAAS GPS/Nav/Comm King KX 170B #2 Nav/Comm JPI EDM 900 color engine management system Appareo Stratus ES ADS-B Out transponder Garmin GMA 340 audio panel Artex ELT 345 406mhz ELT Precision Aviation PAI 700 vertical compass card All electric (vacuum system removed) |
|---|
Additional Equipment
| Additional Equipment | SureFly electronic ignition system turboGAMIjectors (customized tuned fuel injectors) LoPresti Speed Merchants Hubba Bubba main landing gear wheel covers M-20 air oil separator Wingtip LED recognition/nav lights Lake Aero Styling modified nose gear truss bushing Mooney alternate air door modification |
|---|
Interior
| Year Interior | 2007 |
|---|
Exterior
| Year Painted | 2009 |
|---|
Inspection Status
| Inspection Status | Miscellaneous Maintenance: New #6 cylinder 10/2025 New LH and RH brake pads 10/2025 New main landing gear and nose landing gear shock discs 10/2025 New LH and RH tires 10/2025 Replace LH magneto 4/2024 New turbo to exhaust clamp 4/2024 Overhaul #1 and #3 cylinders 4/2024 New SureFly electronic ignition system 12/2023 Overhaul propeller governor 12/2022 Overhaul starter adapter 5/2022 Overhaul #2 cylinder 9/2021 ACF 50 anti-corrosion spray applied 9/2021 New MT propeller 8/2021 New nose tire 7/2019 Overhaul #4 cylinder 6/2019 New electric fuel boost pump 6/2019 New Concorde RG35AXC battery 6/2019 Repair exhaust 2/2017 New engine mount 2/2017 New engine hoses 2/2017 Overhaul engine 5/2012 New alternator and alternator drive coupling 6/2007 New mixture cable 8/1997 |
|---|
