Single-engine piston

N4518S

2012 Homebuilt Cozy MK IV R

Registered 1 NTSB/FAA record
Built
2012
Serial
0329
Class
Single-engine piston
Engines
Mazda 13B
Status
Current as of October 2026
Registered owner
Individual · sign in to see
Based
Napa, CA
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Registration record

N4518S on the FAA register

Type
2012 Homebuilt Cozy MK IV R
Serial
0329
Engines
Mazda 13B
Registered owner
Individual — the name of an individual registrant is shown to signed-in users. Sign in
Napa, CA
Certificate issued
2011-08-05
Airworthiness date
2012-05-31
Registration expires
2027-08-31
Airworthiness class
Experimental · amateur-built
Mode S (hex)
A57954
Mode S (octal)
51274524
Seats (type)
4
Weight class
up to 12,499 lb
Status
Current as of October 2026
Registry history

Timeline

  • 2027-08-31
    Registration expires (renewal due).
  • 2017-01-04
    Accident at Napa, CA; damage: substantial.
  • 2012-05-31
    Airworthiness date on the current FAA record (experimental category (amateur-built)).
  • 2011-08-05
    Certificate of registration issued as N4518S to the current registrant.
  • 1994-05-17
    N4518S previously assigned to a Beechcraft A36 Bonanza (s/n E717); cancelled.
Overview

About N4518S

N4518S is a 2012 Homebuilt Cozy MK IV R, serial number 0329. It is registered to an individual in Napa, California. The current certificate of registration was issued on August 5, 2011 and expires on August 31, 2027.

The FAA aircraft reference file describes the type as a single-engine piston, one Mazda 13B engine and 4 seats. Its airworthiness certificate is experimental category (amateur-built), dated May 31, 2012.

N4518S has 1 accident/incident record on file (most serious damage: substantial); details are below. 2 earlier records involve a different aircraft that carried the same N-number.

Safety record

Accident & incident history

2017-01-04 Accident · Napa, CA Damage: Substantial NTSB · WPR17LA048
Reported aircraft: Schosanski John H Cozy MK IV R
Probable cause: A partial loss of power due to missing apex seals.
1993-07-28 Accident · Houghton, MI Damage: Destroyed Serious injury NTSB · CHI93LA291
Reported aircraft: Beechcraft A-36 — a different aircraft that carried the N4518S registration before this airframe.
Probable cause: the pilot-in-command not following instrument procedures by not using the correct altimeter setting as issued by Air Traffic Control.
1982-09-04 Accident · Shawnee, OK Damage: Substantial NTSB · FTW82DA369
Reported aircraft: Beechcraft A36 — a different aircraft that carried the N4518S registration before this airframe.

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

Same state

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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.