Single-engine piston

N121WB

Homebuilt Kolb Mark III

Registered No accidents on file
Built
—
Serial
M3-040
Class
Single-engine piston
Engines
Bombardier ROTAX (ALL)
Status
Current as of October 2026
Registered owner
Individual · sign in to see
Based
Etna, WY
Registration record

N121WB on the FAA register

Type
Homebuilt Kolb Mark III
Serial
M3-040
Engines
Bombardier ROTAX (ALL)
Registered owner
Individual — the name of an individual registrant is shown to signed-in users. Sign in
Etna, WY
Certificate issued
2022-06-18
Airworthiness date
1993-07-07
Registration expires
2029-06-30
Airworthiness class
Experimental · amateur-built
Mode S (hex)
A0595F
Mode S (octal)
50054537
Seats (type)
2
Weight class
up to 12,499 lb
Status
Current as of October 2026
Registry history

Timeline

  • 2029-06-30
    Registration expires (renewal due).
  • 2022-06-18
    Certificate of registration issued as N121WB.
  • 1993-07-07
    Airworthiness date on the current FAA record (experimental category (amateur-built)).
Overview

About N121WB

N121WB is a Homebuilt Kolb Mark III, serial number M3-040. It is registered to an individual in Etna, Wyoming. The current certificate of registration was issued on June 18, 2022 and expires on June 30, 2029.

The FAA aircraft reference file describes the type as a single-engine piston, one Bombardier ROTAX (ALL) engine and 2 seats. Its airworthiness certificate is experimental category (amateur-built), dated July 7, 1993.

No NTSB accident or incident reports and no FAA preliminary notices are on file for N121WB.

Safety record

Accident & incident history

✓ No NTSB accident or incident reports and no FAA preliminary notices on file for N121WB.

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 Wyoming· 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.