1980 MOONEY M20K 231

153000 $153,000 USD

  • For Sale
  • 1980
  • MOONEY M20K 231
  • N231LG
  • 25-0296

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General Specs (cont.)


865 SMOH


870 lb






Additional Classifications

Detailed Description

Fully Equipped Mooney M20K Trophy (252 conversion, MB engine) 1980, TSN 2163, TSMOH 863, Avidyne IFD540/440, ADS-B IN/OUT GTX345. Good condition, interior 9.5/10, exterior 8/10. a20qwe@gmail.com

Avionics / Equipment

IFR current, next check is 07/2021
Two Alternators - 12V
Avidyne IFD540 WAAS with NSD360HSI (WiFi/Bluetooth, 2019)
Avidyne IFD440 WAAS with GI 106A Ind. (WiFi/Bluetooth, 2019)
Garmin GMA 340 Audio Panel
Garmin GTX 345 ADS-B IN/OUT Transponder  (2019, wired to audio panel as terrain/traffic alerting system and to both IFD, Bluetooth)
Century 41 Auto Pilot
Insight SF-2000 StrikeFinder
LoPresty "Boom Beam" HID Landing Light System (Left Wing)
4 place Oxygen, 77 cu ft, pressure test due 6/2020
Schauer  12V, 25A Automatic Battery Charger/ Maintainer/ Ground Power w/Cessna Plug, 12V, 25A (plug Mooney very well)


ACTSN:2163 (it's keep going up)     Useful Load:870lb
262 Trophy conversion (2002 by Lone Star) : to firewall forward is 252 with MB1 engine (wit factory integrated intercooler, Garret turbocharger and automatic wastegate), 252 cowl with one big hand operating cowl flap.
LoPresty "Boom Beam" HID Landing Light System (2005) 
Side windows new (2017 installed by LASAR)
One-piece composite smooth belly (2017 fabricated and installed by LASAR)
Gear actuator (overhauled 2017 by LASAR)
Corrosion inspection (2017 by LASAR)
New leather interior (2017 installed by LASAR)
Wing wheel well liner fairings (2017  by LASAR) 
Oxygen system (overhauled 2017/bottle due 2032) 
Full compliance 2020 ADS-B IN/OUT

Next ANNUAL 6/2020

Engines / Mods / Prop

TSIO-360-MB1 (#1317174)  (two alternators) SMOH:865Hr
Prop: MCCAULEY 2A34C221-B   SPOH:865Hr  
Time continues to grow)))
Compression check 06/05/2019: #1-70/80, #2-65/80, #3-70/80, #4-65/80, #5-72/80, #6-70/80
Throttle body controller (overhauled 2019)
Fuel pump (overhauled 2019)
Mixture cable (installed new 2019)

Interior / Exterior

Leather interior 2017: 
milk cream leather headliner and all panels / furnish
navy blue leather articulated seats. Glare-shield panel reupholstered. 
Red carpet.  
Interior 9.5 out of 10.
Exterior: 2010 platinum grey and metal dark blue (in 2017 in relation to installation of a new one-piece belly and inspection of the skin in the front area, paint from some part of fuselage has been stripped out. It was re-painted but new paint slightly differs from the old one). Installation of the smooth belly and wheel well liner significantly improved aerodynamics and the shape of the body. After all upgrades N231LG contains practically all features of 252.
Exterior 8 out of 10. The only reason for not assessing it 10 out of 10 is the minor color difference in the some areas of the paint.



05/10/2016:  Exterior fire during attempted engine start http://www.kathrynsreport.com/2016/05/mooney-m20k-w-b-enterprises-inc-n231lg.html).
Completely cleaned, inspected by LASAR (2017, some paint was stripped out for skin inspection and installations of one piece composite belly), structural damages are absent. Last Installation : new right fiberglass wing-root fairing; fiberglass one piece belly; new side windows; new interior; mixture cable; IFD540/440, GTX345. Fuel pump; gear actuator; throttle body controller; oxygen system are overhauled. All details are in Airframe and Engine logbooks.

Please contact me by email only : a20qwe@gmail.com

N231LG is upgraded to 252.
In 1985, Mooney's engineers were tasked with making as many improvements as possible to the 231 and bringing to the market a vastly improved airplane in 1986 - the M-20K 252TSE.  Among the improvements were improved engine cooling and a redesigned primary air induction system.  TCM made big improvements to the LB engine that resulted in the MB1 version. The changes were many.  Most important were a tuned induction system for more even induction airflow to the cylinders, a larger Garret turbocharger, a manifold pressure controlling system allowing full throttle operations for takeoff, and the incorporation of an intercooler that cooled induction air temperatures by as much as 100 degrees F.  The improvements resulted in the 252 that ran cooler than the 231, required only 36 inches of manifold pressure versus 40 with the 231, and flew 10 kts faster than the 231.

*Commercial Financing provided by Currency Capital, LLC and loans made or arranged pursuant to California Finance Lenders Law license number 60DBO-56173. Loans are subject to credit approval and monthly payments illustrated above are based on terms available to highest qualified candidates and subject to additional documentation and prefunding fees, terms and conditions. Currency Capital, LLC is an independent finance company and is not the manufacturer or supplier of any equipment. Currency Capital, LLC is not a consumer lender and any consumer financing will be referred to a consumer lender.

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