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1980 Mooney M20K 231Single-Engine Piston Aircraft • Houston, TX, USA

This 1980 Mooney M20K 231, registration N231HY, is offered for sale at $155,000 by GMax American Aircraft, located in Spring Branch, Texas. The airframe has logged 3,710 hours total time, supported by a maintenance history described as good, with an annual inspection due April 2027 performed by Henry Weber. This particular 231 is equipped with the "big three" performance modifications highly sought after on the type: an Airflow intercooler, a Merlyn upper deck pressure controller for automatic wastegate operation, and new-generation Precise Flight electric speed brakes.

Under the cowl, the Continental TSIO-360-LB1 engine (rated at 210 HP...

Year
1980
Make
Mooney
Series
M20
Model
M20K 231
Tail #
N231HY
Serial #
25-0271

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Specifications

Category
Single-Engine Piston
Intended Use
Business, Recreational
Flight Rules
IFR

Hours, Logs & Inspections

Total Time
3,710 hrs
Engine 1 Time
1,250 hrs
Prop 1 Time
18 hrs (TSO)
Inspection Status
Annual Due April 2027 (Henry Weber). Good Maintenance History.

Avionics

GPS

Garmin GTN-650 - Touchscreen WAAS GPS Nav Com FMS

Comms

King KX-155 - Digital Nav Com

AP

King KFC-200 - AutoPilot with Altitude Hold and Flight Director

Audio

Garmin GMA-340 - Audio Panel Intercom with Markers

ADSB

Garmin GTX-330ES - ADS-B Transponder with Ext. Squitter (>FL180)

PFD

Garmin GTN-650 - Touchscreen WAAS GPS Nav Com FMS

Additional Equipment

Engine Monitor

JP Instruments EDM-700 - JP Graphic and Digital Engine Monitor

Intercooler

Airflow InterCooler

Wastegate

Merlyn Upper Deck Pressure Controller - (Automatic Wastegate)

Speed Brakes

Precise Flight Electric Speed Brakes - New Generation

Tachometer

Electronics International Digital Tach

Sun Visors

Rosen Sun Visors

TIT Indicator

Digital TIT

Ski Tubes

Dual Ski Tubes

Fuel Gauges

Wing Sight Fuel Gauges

Handheld Jack

Handheld Com Jack

External Power

External Power Receptacle

Harnesses

4-Place Shoulder Harnesses

Avionics Master

PTT

Dual Yoke Mounted PTT

Electric Trim

Interior & Exterior

Interior Year
2023
Interior Notes
2023 New Camel Colored Leather Seats and New Carpets. Very Good Condition.
Exterior Notes
Cream overall with Rust and Brown. Paint is okay but the clear coat on top of the strips is flaking.

Engine & Propeller

Engine Type
Piston
Engine Count
1
Engine Make
Continental
Engine Model
TSIO360LB1
Engine Power
210 HP
Propeller Model
McCauley 2-Blade

Asking Price

$155,000

Aircraft Location

Houston, TX, USA

Listing Details

Used
For Sale

Price History

Jul 31, 2026: $155,000 - controller

Contact Seller

First Seen: Jul 31, 2026

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Asking Price

$155,000