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1978 Cessna 340AMulti-Engine Piston Aircraft • Upland, CA, USA

This 1978 Cessna 340A, registration N15WM, presents as a well-equipped twin with a low total time of 3,670 hours and a recent major overhaul on both powerplants. Both Continental TSIO-520 engines have 163 hours since major overhaul (SMOH), performed by Western Skyways Inc. in March 2020, and both Hartzell propellers have 163 hours since overhaul (SOH) from January 2020. The aircraft features the RAM VI conversion STC, increasing horsepower to 335 hp per engine, and includes other RAM modifications such as a synchrophaser, GAMI injectors, spoilers, and an STC for increased takeoff weight. The useful load is 1,779 pounds.

The panel is...

Year
1978
Make
Cessna
Series
340
Model
340A
Tail #
N15WM
Serial #
340A0523

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Specifications

Category
Multi-Engine Piston
Intended Use
Business, Passenger
Flight Rules
IFR
Useful Load
1,779 lbs
Seats
6

Hours, Logs & Inspections

Total Time
3,670 hrs
Engine 1 Time
163 hrs (SMOH)
Engine 2 Time
163 hrs (SMOH)
Prop 1 Time
163 hrs (SOH)
Prop 2 Time
163 hrs (SOH)
Logbook Status
Complete Logs No Known Damage History
Inspection Status
Last Annual 08/2025, Annual Inspection Due 08/2026, IFR: 91.411/91.413 (IFR Pitot/Static Test) Due, ELT Due 06/2027

Avionics

GPS

Garmin GTN 750Xi - GTN GPS Nav Comm, GTN GPS Nav Comm

Comms

Garmin GTN 750Xi - GTN GPS Nav Comm, GTN GPS Nav Comm

AP

Garmin GFC 600 - GFC Auto Pilot

Audio

Garmin GMA 35 - GMA Audio Panel

Traffic

Garmin GTX 330ES - Transponder ADS-B

ADSB

Garmin GTX 330ES - Transponder ADS-B

PFD

Aspen EFD-1000 - Pro

MFD

Avidyne EX500 - MFD

EMS

JPI EDM 960 - JPI EDM Primary Engine Data Management System

Additional Equipment

Air Conditioning

Cessna Air Conditioning System STC to 134A Refrigerant

ELT

Artex ME406 - ELT, ELT

Clock

Davtron M811B - Clock

Spoilers

Spoilers per STC SA4948NM

Vortex Generators

Micro VG's with 5% Take off Weight Increase

Sun Visors

Rosin Sun Visors

Synchrophaser

RAM Synchrophaser

Synchronizer

RAM Synchrophaser

Emergency Locator Transmitter

Artex ME406 - ELT

Interior & Exterior

Interior Notes
Nice Paint White with White and Grey Stripes Upholstery Very Clean Leather Grey
Exterior Notes
Nice Paint White with White and Grey Stripes

Engine & Propeller

Engine Type
Piston
Engine Count
2
Engine Make
Continental
Engine Model
TSIO-520-JcNcNB
Engine Power
335 HP
Propeller Model
Hartzell PHC-C3YF-2VF Blade Model FC-7663DB-2Q

Asking Price

$399,999

Aircraft Location

Upland, CA, USA

Listing Details

Used
For Sale

Price History

Jan 28, 2026: $399,999 - trade-a-plane

Jan 28, 2026: $399,999(-$26,000) - controller

Jan 22, 2026: $425,999 - trade-a-plane

+7 more price changes

Contact Seller

First Seen: Oct 11, 2025

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Asking Price

$399,999