Single-engine piston

N204TJ

1996 Homebuilt Cozy Mark IV

Registered 1 NTSB/FAA record
Built
1996
Serial
204
Class
Single-engine piston
Engines
Lycoming I0360 SER A&C
Status
Current as of October 2026
Registered owner
Individual · sign in to see
Based
Jefferson, SD
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Registration record

N204TJ on the FAA register

Type
1996 Homebuilt Cozy Mark IV
Serial
204
Engines
Lycoming I0360 SER A&C
Registered owner
Individual — the name of an individual registrant is shown to signed-in users. Sign in
Jefferson, SD
Certificate issued
1996-03-26
Airworthiness date
1996-08-01
Registration expires
2029-10-31
Airworthiness class
Experimental · amateur-built
Mode S (hex)
A1A291
Mode S (octal)
50321221
Seats (type)
4
Weight class
up to 12,499 lb
Status
Current as of October 2026
Registry history

Timeline

  • 2029-10-31
    Registration expires (renewal due).
  • 2011-05-30
    Accident at Sioux City, IA; damage: substantial.
  • 1996-08-01
    Airworthiness date on the current FAA record (experimental category (amateur-built)).
  • 1996-03-26
    Certificate of registration issued as N204TJ.
Overview

About N204TJ

N204TJ is a 1996 Homebuilt Cozy Mark IV, serial number 204. It is registered to an individual in Jefferson, South Dakota. The current certificate of registration was issued on March 26, 1996 and expires on October 31, 2029.

The FAA aircraft reference file describes the type as a single-engine piston, one Lycoming I0360 SER A&C engine and 4 seats. Its airworthiness certificate is experimental category (amateur-built), dated August 1, 1996.

N204TJ has 1 accident/incident record on file (most serious damage: substantial); details are below.

Safety record

Accident & incident history

2011-05-30 Accident · Sioux City, IA Damage: Substantial Minor injury NTSB · CEN11LA367
Reported aircraft: Jones Cozy Mark IV
Probable cause: The pilot's improper installation of the gascolator gasket during the airplane's last condition inspection, which resulted in a partial loss of engine power while maneuvering.

Sources: NTSB aviation accident database and CAROL case system, FAA preliminary accident & incident notices. Search accident records

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Browse: Aircraft registered in South Dakota· Registry by state· FAA registry stats

Data: FAA Aircraft Registry (October 2026), including deregistered aircraft; NTSB and FAA accident data; fyiAero listing history. Individual owners' names are shown to signed-in users and street addresses are never shown. Type figures are published specifications, not this aircraft's.