2020 Unknown Stewart S-51 Mustang
FOR SALE

2020 Unknown Stewart S-51 Mustang

Experimental / Homebuilt

Contact for price
Total Time 42 hrs
Engine SMOH 42 hrs
Serial # 156
Reg # N1944K

Equipment & Features

Seats
2
✓ Clean NTSB ✓ Verified recently

Aircraft Details

Seller reported

Avionics & Equipment

Apollo SL60 GPS/COMM Terra TRT 250D Transponder TN 200D Nav Receiver Fuel Gauge Ammeter Fuel Pressure Gauge Manifold Pressure Gauge Air Speed Indicator Altimeter Coolant Pressure Gauge Oxygen Flow Indicator Hydraulic Pressure Gauge Oil Temperature Gauge Coolant Temperature Gauge Oil Pressure Gauge Vertical Speed Indicator Attitude Indicator Turn Coordinator Heading Indicator Additional Features Custom water pump that pumps 70 gallons per minutes AirFlow Performance FM300 mechanical fuel injection unit Exterior

The exterior stays true to the vintage paint scheme of the original P-51. The gray body with

black white yellow &amp

green accents give the aircraft the eye-catching attention it deserves. With the build being recent

the exterior couldn’t be any more perfect. Interior The interior of this aircraft is impeccably clean

in an appealing shade of military green. The panel is sharp looking with the black instruments making a nice contrast. The brown leather seat makes flight comfortable

while the green 5 point harness keeps the pilot &amp passenger safely in their seats for the thrilling adventure. Online auction starts 30th April 2025. View full logbooks &amp

additional data online (https://bids.airspaceauctions.com/Listing/Details/653954)

Click here for Specification Sheet

Description

Features

2020 Build

Faithful P51 Replica

Extensive written history of the build decision-making process

Airframe

2020 Stewart S-51 Mustang

N1944K

S/N: 156

Aircraft Total Time: 42 hours

Date of annual: Freshly yearly inspection will be provided.

Fuel Capacity: 102 gallons

Stall Speed: 73

Range: 700 miles

Cruise: 230 @ about 23 gallons per hour

Engine

Keith Black Performance 540 Cubic Inch Chevrolet Engine

Engine Total Time: 42 SNEW

S/N: 003

Propeller

Hartzell 4 blade

Model: HCB4TN3-1

HUB Model: Experimental

Avionics

Apollo SL60 GPS/COMM

Terra TRT 250D Transponder

TN 200D Nav Receiver

Fuel Gauge

Ammeter

Fuel Pressure Gauge

Manifold Pressure Gauge

Air Speed Indicator

Altimeter

Coolant Pressure Gauge

Oxygen Flow Indicator

Hydraulic Pressure Gauge

Oil Temperature Gauge

Coolant Temperature Gauge

Oil Pressure Gauge

Vertical Speed Indicator

Attitude Indicator

Turn Coordinator

Heading Indicator

Additional Features

Custom water pump that pumps 70 gallons per minutes

AirFlow Performance FM300 mechanical fuel injection unit

Exterior

The exterior stays true to the vintage paint scheme of the original P-51. The gray body with, black, white, yellow, green accents give the aircraft the eye-catching attention it deserves. With the build being recent, the exterior couldn’t be any more perfect.

Interior

The interior of this aircraft is impeccably clean, in an appealing shade of military green. The panel is sharp looking with the black instruments making a nice contrast. The brown leather seat makes flight comfortable, while the green 5 point harness keeps the pilot passenger safely in their seats for the thrilling adventure.

Online auction starts 30th April, 2025. View full logbooks additional data online (

Click here for Specification Sheet

Engine

Keith Black Performance 540 Cubic Inch Chevrolet Engine Engine Total Time: 42 SNEW S/N: 003 Propeller Hartzell 4 blade Model: HCB4TN3-1 HUB Model: Experimental Avionics Apollo SL60 GPS/COMM Terra TRT 250D Transponder TN 200D Nav Receiver Fuel Gauge Ammeter Fuel Pressure Gauge Manifold Pressure Gauge Air Speed Indicator Altimeter Coolant Pressure Gauge Oxygen Flow Indicator Hydraulic Pressure Gauge Oil Temperature Gauge Coolant Temperature Gauge Oil Pressure Gauge Vertical Speed Indicator Attitude Indicator Turn Coordinator Heading Indicator Additional Features Custom water pump that pumps 70 gallons per minutes AirFlow Performance FM300 mechanical fuel injection unit Exterior The exterior stays true to the vintage paint scheme of the original P-51. The gray body with, black, white, yellow, & green accents give the aircraft the eye-catching attention it deserves. With the build being recent, the exterior couldn’t be any more perfect. Interior The interior of this aircraft is impeccably clean, in an appealing shade of military green. The panel is sharp looking with the black instruments making a nice contrast. The brown leather seat makes flight comfortable, while the green 5 point harness keeps the pilot & passenger safely in their seats for the thrilling adventure. Online auction starts 30th April, 2025. View full logbooks & additional data online (https://bids.airspaceauctions.com/Listing/Details/653954) Click here for Specification Sheet

Propeller

Hartzell 4 blade

Interior

The interior of this aircraft is impeccably clean, in an appealing shade of military green. The panel is sharp looking with the black instruments making a nice contrast. The brown leather seat makes flight comfortable, while the green 5 point harness keeps the pilot & passenger safely in their seats for the thrilling adventure. Online auction starts 30th April, 2025. View full logbooks & additional data online (https://bids.airspaceauctions.com/Listing/Details/653954) Click here for Specification Sheet

Exterior

The exterior stays true to the vintage paint scheme of the original P-51. The gray body with, black, white, yellow, & green accents give the aircraft the eye-catching attention it deserves. With the build being recent, the exterior couldn’t be any more perfect. Interior The interior of this aircraft is impeccably clean, in an appealing shade of military green. The panel is sharp looking with the black instruments making a nice contrast. The brown leather seat makes flight comfortable, while the green 5 point harness keeps the pilot & passenger safely in their seats for the thrilling adventure. Online auction starts 30th April, 2025. View full logbooks & additional data online (https://bids.airspaceauctions.com/Listing/Details/653954) Click here for Specification Sheet

Description and equipment details provided by the seller. AeroGurus does not verify seller-provided information.

Price Comparison 1 active offer

Source Price Action
Matt Hutton
avpay.aero
Contact for Price

Estimate Monthly Payment

Unknown Stewart S-51 Mustang loan calculator

AeroGurus

AeroGurus Data & Analysis

Independent data from FAA, NTSB, and market analysis

About This Unknown Stewart S-51 Mustang

This 2020 Unknown Stewart S-51 Mustang (N1944K) is a experimental / homebuilt with 42 hours on the airframe.

NTSB records show 0 incidents for this airframe — a clean safety record.

Pre-Purchase Checklist

Safety record: 0 NTSB incidents
Airframe: 42 hours
Budget $5,000-15,000 for pre-purchase inspection

Ownership & Registration

FAA registration data pending for N1944K.

Location & Ownership

FAA records

Aircraft Location

Location not available

Title Status

No FAA title records

Available for US-registered aircraft only

Source: FAA Aircraft Registry, FAA Civil Aviation Registry (DocIndex). Title data may be delayed. Always verify with an aviation attorney before purchase.

Safety Record

NTSB safety data coming soon.

We'll check N1944K against the NTSB accident database.

Similar Aircraft for Sale

2011 Unknown H May Sports Trainer
$109,000
For Sale
Total Time 700
Listed 1mo ago
2026 Unknown Wing AC-4 GT
$231,210
For Sale
Reg# CS-LSA Portugal
Location Switzerland
Listed 5d ago
1946 Unknown Ercope 415C
$25,000
For Sale
Reg# N3174H US
Location Sparta, WI
Listed yesterday
Limited info
2025 Unknown Airbus H135T3
Contact for Price
For Sale
Total Time 10
Location France
Listed 1mo ago

Explore More

Prices and listings updated daily · Data: FAA Registry, NTSB · About our data
Disclaimer: All prices, cost estimates, and market values shown are based on asking prices from third-party sources and are provided for informational purposes only. AeroGurus is not an appraiser, broker, or financial advisor. Always obtain a professional appraisal and independent inspection before making a purchase decision. Actual transaction prices may differ from asking prices.