Weight-shift trike

N639W

2019 Wild Sky Goat

Registered No accidents on file
Built
2019
Serial
1721
Class
Weight-shift trike
Engines
Rotax 912ULS series
Status
Current as of October 2026
Registered owner
Niner Whiskey LLC (LLC)
Based
Clark Fork, ID
Registration record

N639W on the FAA register

Type
2019 Wild Sky Goat
Serial
1721
Engines
Rotax 912ULS series
Registered owner
Niner Whiskey LLC
Clark Fork, ID
Certificate issued
2019-07-15
Airworthiness date
2019-04-27
Registration expires
2029-07-31
Airworthiness class
Experimental · light-sport
Mode S (hex)
A8611F
Mode S (octal)
52060437
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 N639W to the current registrant.
  • 2019-04-27
    Airworthiness date on the current FAA record (experimental category (light-sport)).
  • 1941-11-27
    N639W previously assigned to a Eaglerock A-3 (s/n 973); cancelled.
Overview

About N639W

N639W is a 2019 Wild Sky Goat, serial number 1721. The FAA register lists Niner Whiskey LLC as the registrant in Clark Fork, Idaho. 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 weight-shift trike, one Rotax 912ULS series engine and 2 seats. Its airworthiness certificate is experimental category (light-sport), dated April 27, 2019.

No NTSB accident or incident reports and no FAA preliminary notices are on file for N639W.

Safety record

Accident & incident history

✓ No NTSB accident or incident reports and no FAA preliminary notices on file for N639W.

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 Idaho· 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.