Single-engine piston

N20MN

1999 Homebuilt Cozy Mark IV

Registered 1 NTSB/FAA record
Built
1999
Serial
425
Class
Single-engine piston
Engines
Lycoming O-360-A1D
Status
Current as of October 2026
Registered owner
Individual · sign in to see
Based
Houston, TX
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Registration record

N20MN on the FAA register

Type
1999 Homebuilt Cozy Mark IV
Serial
425
Engines
Lycoming O-360-A1D
Registered owner
Individual — the name of an individual registrant is shown to signed-in users. Sign in
Houston, TX
Certificate issued
2022-11-03
Airworthiness date
1999-09-14
Registration expires
2029-11-30
Airworthiness class
Experimental · amateur-built
Mode S (hex)
A190CA
Mode S (octal)
50310312
Seats (type)
4
Weight class
up to 12,499 lb
Status
Current as of October 2026
Registry history

Timeline

  • 2029-11-30
    Registration expires (renewal due).
  • 2024-03-25
    Accident at Gonzales, TX; damage: substantial.
  • 2022-11-03
    Certificate of registration issued as N20MN.
  • 1999-09-14
    Airworthiness date on the current FAA record (experimental category (amateur-built)).
Overview

About N20MN

N20MN is a 1999 Homebuilt Cozy Mark IV, serial number 425. It is registered to an individual in Houston, Texas. The current certificate of registration was issued on November 3, 2022 and expires on November 30, 2029.

The FAA aircraft reference file describes the type as a single-engine piston, one Lycoming O-360-A1D engine and 4 seats. Its airworthiness certificate is experimental category (amateur-built), dated September 14, 1999.

N20MN has 1 accident/incident record on file (most serious damage: substantial); details are below.

Safety record

Accident & incident history

2024-03-25 Accident · Gonzales, TX Damage: Substantial NTSB · CEN24LA141
Reported aircraft: Cozy Mark IV
Probable cause: Maintenance personnel s failure to properly torque the crankshaft idler gear hardware according to the engine manufacturer s service instructions, which resulted in separation of the crankshaft idler gear s fasteners and disengagement of the camshaft, crankshaft, and crankshaft idler gear and a subsequent total loss of engine power.
NTSB report ↗

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

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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.