United States aircraft registry
N121SD
MONNETT SONERAI-IIB
Fixed-wing single-engine · Reciprocating
- Engine manufacturer
- VOLKSWAGEN
- Registration status
- Valid
- Registration expires
- May 31, 2033
Registered owner
DOIRON STEPHEN R
IndividualNEW BRAUNFELS, Texas · United States
Registered mailing location
The registered owner may differ from the operator. Mailing location does not identify the aircraft’s base or current position.
Aircraft specifications
- Manufacturer / model
- MONNETT / SONERAI-IIB
- Serial number
- 2-2B
- Aircraft type
- Fixed-wing single-engine
- Engine model
- CONVERSION
- Engine type
- Reciprocating
- Engines
- 1
- Seats (type reference)
- 2
- Mode S / ICAO hex
- A058FD
Registry specifications may differ from the aircraft’s current configuration.
Registration details
- Registration country
- United States
- Certificate issued
- May 29, 2026
- Expiration date
- May 31, 2033
- Registrant type
- Individual
- Fractional ownership
- No
Certification & additional details
- Classification
- Experimental
- Airworthiness certificate date
- Feb 26, 1980
- Aircraft category
- Land
- Mode S (octal)
- 50054375
- Last registry activity
- May 29, 2026
Registry certificate information does not establish current airworthiness. Registry activity is not flight activity.
Source: FAA Aircraft Registry · Dataset refreshed 2026-11-01. Registration details can change. Map centered on the registered ZIP-code area, not an exact address. Private onboard avionics and connectivity data are not included.