Glider

N5121

Stemme Gmbh & Co S10-VT

Registered No accidents on file
Built
—
Serial
11-023
Class
Glider
Engines
1
Status
Current as of October 2026
Registered owner
Mountain Stemme LLC (LLC)
Based
Boulder, CO
Registration record

N5121 on the FAA register

Type
Stemme Gmbh & Co S10-VT
Serial
11-023
Engines
1
Registered owner
Mountain Stemme LLC
Boulder, CO
Certificate issued
2025-08-26
Airworthiness date
—
Registration expires
2032-08-31
Airworthiness class
—
Mode S (hex)
A66B58
Mode S (octal)
51465530
Seats (type)
2
Weight class
up to 12,499 lb
Status
Current as of October 2026
Registry history

Timeline

  • 2032-08-31
    Registration expires (renewal due).
  • 2025-08-26
    Certificate of registration issued as N5121.
Overview

About N5121

N5121 is a Stemme Gmbh & Co S10-VT, serial number 11-023. The FAA register lists Mountain Stemme LLC as the registrant in Boulder, Colorado. The current certificate of registration was issued on August 26, 2025 and expires on August 31, 2032.

The FAA aircraft reference file describes the type as a glider and 2 seats.

No NTSB accident or incident reports and no FAA preliminary notices are on file for N5121.

Safety record

Accident & incident history

✓ No NTSB accident or incident reports and no FAA preliminary notices on file for N5121.

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 Colorado· 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.