Single-engine piston

N104SY

2016 Homebuilt Sonex Onex

Registered No accidents on file
Built
2016
Serial
0104
Class
Single-engine piston
Engines
Sonex AEROVEE 2.1
Status
Current as of October 2026
Registered owner
Individual · sign in to see
Based
Washington, WV
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Registration record

N104SY on the FAA register

Type
2016 Homebuilt Sonex Onex
Serial
0104
Engines
Sonex AEROVEE 2.1
Registered owner
Individual — the name of an individual registrant is shown to signed-in users. Sign in
Washington, WV
Certificate issued
2016-07-06
Airworthiness date
2019-05-17
Registration expires
2029-07-31
Airworthiness class
Experimental · amateur-built
Mode S (hex)
A01537
Mode S (octal)
50012467
Seats (type)
1
Weight class
up to 12,499 lb
Kit
Sonex Aircraft Llc ONEX
Status
Current as of October 2026
Registry history

Timeline

  • 2029-07-31
    Registration expires (renewal due).
  • 2019-05-17
    Airworthiness date on the current FAA record (experimental category (amateur-built)).
  • 2016-07-06
    Certificate of registration issued as N104SY.
Overview

About N104SY

N104SY is a 2016 Homebuilt Sonex Onex, serial number 0104. It is registered to an individual in Washington, West Virginia. The current certificate of registration was issued on July 6, 2016 and expires on July 31, 2029.

The FAA aircraft reference file describes the type as a single-engine piston, one Sonex AEROVEE 2.1 engine and 1 seats. Its airworthiness certificate is experimental category (amateur-built), dated May 17, 2019.

No NTSB accident or incident reports and no FAA preliminary notices are on file for N104SY.

Safety record

Accident & incident history

✓ No NTSB accident or incident reports and no FAA preliminary notices on file for N104SY.

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 West Virginia· 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.