Larson Aircraft Sales, LLC
  1988 Mooney M20K 252 TSE

Introduced for the 1986 model year, the Mooney M20K 252 (TSE) effectively addressed many of the long-standing issues with the 231 series Mooney introduced in 1979.  The 252 has a dramatically improved engine installation aimed at reducing heat issues that had plagued its predecessor. 

The 252's Continental TSIO-360MB is a factory intercooled installation, delivering much cooler induction air to its six cylinders.  The induction system was cleaned up by changing to a NACA type inlet on the right lower cowl which also proved more resistant to induction icing issues.  The 231's two small cowl flaps were nixed for a massive single, electrically actuated cowl flap on the 252.  Also, in the transition to the 252, the 231's problematic fixed wastegate was replaced with a variable wastegate with automatic controller. This improved turbo actuation method improves cooling and fuel consumption, spinning the turbo up on demand rather than continuously. These improvements made the 252 a very desirable plane, with very little tendency to overheat or overboost.  The -MB engine in the 252 has a much better service record than the previous models, with recommended TBO being a strong possibility and not a dream!

N252BY is a fantastically equipped, economical cross-country machine with an exceptional maintenance history.  The last 12 annuals have been done at a local Mooney Service Center.  Logs are complete and original since being awarded a standard airworthiness certificate in 1988. 
This is a ready to go ADS-B equipped traveling machine with two WAAS equipped  Garmins!

Please don't hesitate to call us at (303) 503-8356 with further questions regarding N252BY, insurance, finance options, upgrades or transition training. This plane is based at the Longmont Vance Brand Airport in the Denver area and can be viewed by appointment.

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Mooney M20K 252 (TSE)

sn: 25-1162


        • Only 3295 Hours Total Time Since New
        • Last 12 Annual inspections done at Mooney Service Center
        • Damage History - Belly landing 2004 repaired by Mooney specialist Wilmar Air Services (Engine teardown inspection done by Poplar Grove)
        • 7/1/2019 Annual due
        • No Corrosion Issues - Hangared Since New
        • Complete Logbooks since factory test flight to current

        Optional Equipment:

        • Factory Speed Brakes
        • Factory 5 place Oxygen
        • Secondary Vacuum Pump (Electric)
        • Factory Dual Alternators
        • Propeller Anti-Ice


        • Garmin GMA35 Remote Audio Panel (Controlled through GTN750)
        • Garmin GTN-750 Touchscreen  # 1 WAAS GPS/MAP/Nav/Comm with Glideslope
        • Garmin GNS-430W #2 WAAS GPS/MAP/NAV/Comm with Glideslope
        • Garmin GTX-330ES Transponder with ADS-B Out and Mode S
        • Garmin GDL-88 ADS B "IN"  receiver
        • King KFC-150 Autopilot / Flight Director (Altitude Preselect, Fully Approach Coupled, Alt/Heading/Nav/Localizer/GS Intercept)
        • JPI EDM-900 Graphic Engine Monitor (Replaces Fuel Gauges, Fuel Management, Oil Press/Temp, Tach/MP, Oat, and TIT)

Engines & Propellers
    • Continental TSIO-360MB (210 hp, Factory Intercooled, 1800 hour recommended TBO)
    • 1420 Since Major Overhaul (Poplar Grove Airmotive with Factory New Continental Cylinders)
    • Compressions all in the 70's last annual with low oil burn
    • Turbo GAMI-jectors (calibrated for lean of peak operations)
    • This is a very healthy engine with excellent compressions, low oil burn, and exceptional oil analysis / consumption records.

Paint & Interior

Paint was done in December of 2003 with Alumigrip, G8010 Off-White with G5007 Royal Blue and G7037 Toreador Red.  Paint has several minor flaws in high wear areas, and no perceivable loss of glossiness.  A minor touchup would bring the condition of the paint to a strong 7 on the bluebook scale, or what most would call an 8 on a scale of 10.

Interior is original and in good condition for its age with light wear and tear in the typical areas.

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Larson Aircraft Sales, LLC.
Longmont Vance Brand Airport (KLMO)
229 Airport Rd.
Longmont, CO 80503

Phone: 303-503-8356

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