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1973 Cessna 172/180 ConversionSingle-Engine Piston Aircraft • Sheridan, WY, USA

This 1973 Cessna 172M Skyhawk (N307TG) presents as a well-equipped amphibious conversion with 4,205 total airframe hours. The aircraft features a Penn Yan Aero 180HP STC conversion with a Lycoming O-360-A4M engine showing 1,241 hours SMOH (March 2020 installation) and matching-time McCauley 2-blade seaplane propeller. Recent maintenance includes a fresh annual inspection completed April 2025 with strong cylinder compressions (all above 76/80) and an avionics panel updated by Gardner-Lowe in August 2024 featuring dual Garmin GNC 215 NAV/COM radios, GNX375 GPS/ADS-B transponder, and new attitude/turn instruments.

The Wipline 2350A...

Year
1973
Make
Cessna
Series
172 Skyhawk
Model
172/180 Conversion
Tail #
N307TG
Serial #
17260863

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Specifications

Category
Single-Engine Piston
Intended Use
Amphibious, Recreational
Flight Rules
VFR & IFR
Useful Load
718 lbs
Seats
4

Hours, Logs & Inspections

Total Time
4,205 hrs
Engine 1 Time
1,241 hrs (SMOH)
Prop 1 Time
1,241 hrs (SPOH)
Logbook Status
Complete logs available to serious buyers
Inspection Status
Fresh Annual Inspection: April 2025

Avionics

Audio

PS Engineering Audio Panel

GPS

Garmin GNX375 - Touchscreen GPS/ADSB In-Out Transponder

Comms

Garmin 215 - NAV/Com Radio NAV/Com Radio

ADS-B Out

Garmin GNX375 - Touchscreen GPS/ADSB In-Out Transponder

ADS-B In

Garmin GDL-52 - Portable Power Audio Wiring

Additional Equipment

Amphibious Floats

Wipline 2350A - Amphibious floats

Gear System

Amphibian Gear Advisory & Laser Gear System

Life Jackets

Revere Comfort Max - Red Inflatable Life Jackets Type III

Sun Shield

Kennon Sun-Shield - Complete Set

Engine Plugs

Kennon Engine Plugs

Float Pump

Milwaukee M18 - Cordless Drill Seaplane Float Pump with AIS Filter

Interior & Exterior

Interior Rating
8/10
Paint Rating
10/10
Interior Notes
Interior: 8/10
Exterior Notes
Paint: 10/10

Engine & Propeller

Engine Type
Piston
Engine Count
1
Engine Make
Lycoming
Engine Model
O-360-A4M
Engine Power
180 HP
Propeller Model
McCauley 1A200/DFA8242 2-blade seaplane prop

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1972 Cessna 172/180 Conversion

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1964 Cessna 172/180 Conversion

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1962 Cessna 172/180 Conversion

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Total Time
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Prop Time
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Cessna 172E Skyhawk

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