C-MMJ - 1940 Piper J4AX Aircraft Registration

J4

1940 Piper J4AX

Aircraft Description

C-MMJ is a 1940 Piper J4AX, a single-engine aircraft registered to Vernon Winston Balsom in Garnish, Newfoundland and Labrador. The aircraft's Mode S transponder code is C020F2 (hex), used for ADS-B identification and flight tracking. AviatorDB monitors aircraft positions through ADS-B surveillance data and updates records as new position data is received.

The Piper J-4 Cub Coupe, America's first successful side-by-side training aircraft, revolutionized flight instruction in the late 1930s by offering improved instructor-student communication over traditional tandem seating arrangements. First flown in 1938, it was a high-wing single-engine monoplane that seated two occupants side-by-side with an enclosed cabin. Spanning 35 feet 3 inches with a 65-75 horsepower Continental engine, approximately 1,250 were built by Piper Aircraft Company before production ended in December 1941. AviatorDB tracks 48,277 Piper aircraft currently registered in the FAA database. The ICAO type designator for this aircraft model is J4.

AviatorDB has found no NTSB accident or incident reports involving C-MMJ. AviatorDB cross-references all FAA registration data with NTSB accident and incident reports, providing a comprehensive safety overview for every registered aircraft in the United States.

Model Year
1940
Manufacturer
Piper
Model
J4AX
Type Aircraft
Fixed Wing Single Engine
ICAO Type Code
J4J-4 Cub Coupe
Airworthiness Date
Classification
Type Registration
Unknown
Status
Cert Issue Date

Registered Owner

Name
Vernon Winston Balsom
Address
Box 117
City
Garnish
State / Zip Code
Newfoundland and LabradorA0E1T0
Country
Canada

Powerplant & Avionics

Engine Type
Number of Engines
1
Mode S Code (Oct)
Mode S Code (Hex)
C020F2

Additional Details

Registration
C-MMJ
Serial Number
4 1029X
Number of Engines
1
Number of Seats
Expiration Date
Last Action Date
Last Update Date
February 14, 2026
Unique ID

Data Source

Data provided by Transport Canada. Contact the agency directly for more information.

Last updated: 2026-05-15 01:32:20 UTC