Single-engine piston

N4XK

1989 Homebuilt FK 1 Stol

Registered 1 NTSB/FAA record
Built
1989
Serial
001
Class
Single-engine piston
Engines
Lycoming O-320 series
Status
Current as of October 2026
Registered owner
Co-owned · sign in to see
Based
Vancouver, WA
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Registration record

N4XK on the FAA register

Type
1989 Homebuilt FK 1 Stol
Serial
001
Engines
Lycoming O-320 series
Registered owner
Co-owned — the name of an individual registrant is shown to signed-in users. Sign in
Vancouver, WA
Certificate issued
2019-07-15
Airworthiness date
1989-06-26
Registration expires
2029-07-31
Airworthiness class
Experimental · amateur-built
Mode S (hex)
A4AA06
Mode S (octal)
51125006
Seats (type)
2
Weight class
up to 12,499 lb
Status
Current as of October 2026
Registry history

Timeline

  • 2029-07-31
    Registration expires (renewal due).
  • 2019-07-15
    Certificate of registration issued as N4XK.
  • 2010-02-26
    Accident at Dixie, ID; damage: substantial.
  • 1989-06-26
    Airworthiness date on the current FAA record (experimental category (amateur-built)).
Overview

About N4XK

N4XK is a 1989 Homebuilt FK 1 Stol, serial number 001. It is registered to co-owners in Vancouver, Washington. The current certificate of registration was issued on July 15, 2019 and expires on July 31, 2029.

The FAA aircraft reference file describes the type as a single-engine piston, one Lycoming O-320 series engine and 2 seats. Its airworthiness certificate is experimental category (amateur-built), dated June 26, 1989.

N4XK has 1 accident/incident record on file (most serious damage: substantial); details are below. 1 earlier record involves a different aircraft that carried the same N-number.

Safety record

Accident & incident history

2010-02-26 Accident · Dixie, ID Damage: Substantial NTSB · WPR10LA155A
Reported aircraft: Keller FK1 Stol
Probable cause: The failure of the experimental FK1 pilot to maintain clearance from a parked airplane while landing.
1989-07-29 Accident · Chilton, WI Damage: Substantial NTSB · CHI89FA150
Reported aircraft: Prospector FK-1 — a different aircraft that carried the N4XK registration before this airframe.
Probable cause: THE PILOT'S POOR IN FLIGHT PLANNING IN THAT HE DIVERTED HIS ATTENTION AND CONTINUED THE FLIGHT BEYOND THE ORIGINAL PERIOD PLANNED. BEFORE TAKEOFF THE PILOT WAS AWARE OF HIS FUEL ENDURANCE.

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 Washington· 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.