Single-engine piston

N18921

Ryan STM-S2 / STM-2

Registered No accidents on file
Built
—
Serial
339
Class
Single-engine piston
Engines
Menasco SUP PIRT D4B
Status
Current as of October 2026
Registered owner
Individual · sign in to see
Based
Las Vegas, NV
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Registration record

N18921 on the FAA register

Type
Ryan STM-S2 / STM-2 (FAA: Ryan Aeronautical ST-A SPECIAL)
Serial
339
Engines
Menasco SUP PIRT D4B
Registered owner
Individual — the name of an individual registrant is shown to signed-in users. Sign in
Las Vegas, NV
Certificate issued
2024-10-04
Airworthiness date
1956-05-04
Registration expires
2031-10-31
Airworthiness class
Standard
Mode S (hex)
A164D3
Mode S (octal)
50262323
Seats (type)
2
Weight class
up to 12,499 lb
Status
Current as of October 2026
Registry history

Timeline

  • 2031-10-31
    Registration expires (renewal due).
  • 2024-10-04
    Certificate of registration issued as N18921.
  • 1956-05-04
    Airworthiness date on the current FAA record (standard category).
Overview

About N18921

N18921 is a Ryan STM-S2 / STM-2 (FAA model ST-A SPECIAL), serial number 339. It is registered to an individual in Las Vegas, Nevada. The current certificate of registration was issued on October 4, 2024 and expires on October 31, 2031.

The FAA aircraft reference file describes the type as a single-engine piston, one Menasco SUP PIRT D4B engine and 2 seats. Its airworthiness certificate is standard category, dated May 4, 1956.

No NTSB accident or incident reports and no FAA preliminary notices are on file for N18921.

Safety record

Accident & incident history

✓ No NTSB accident or incident reports and no FAA preliminary notices on file for N18921.

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 Nevada· 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.