Byington Shain S-7S
N3721S is a Byington Shain S-7S, a fixed-wing airplane with one motor with a four-stroke engine. It has 2 seats. It is registered to an individual in Big Sandy, Montana. The registration is valid: it was issued on June 6, 2019 and expires on June 30, 2029. It holds an experimental airworthiness certificate for registered before jan 31, 2008, dated April 24, 2007.
Aircraft
- Maker
- Byington Shain
- Model
- S-7S
- Serial number
- 0995156
- Type
- Fixed-wing, single engine
- Power
- Four-cycle piston, 1 motor · Rotax 912S · 100 hp
- Seats
- 2
- Year built
- Not given
- Transponder code
- A43DC5 (octal 51036705)
Registration
- Status
- Valid registration
- Certificate issued
- June 6, 2019
- Expires
- June 30, 2029
- Last FAA action
- August 11, 2023
- Airworthiness
- Experimental · Registered before Jan 31, 2008 · April 24, 2007
- FAA region
- Northwest Mountain
- FAA record id
- 00305309
Owner as the FAA publishes it
- Name
- Silvan Wayne C
- Type
- Individual
- Address
- PO Box 428
Big Sandy, MT 59520-0428
Owners can ask the FAA to withhold their name and address from public files. When they do, those fields are blank here as well. How that works.
Documents on file 0
No bills of sale, loans or other documents are indexed against this tail number.
Earlier use of this number 3
Records check free · 1 to understand · 3 clear
The public federal record on N3721S, read the way a buyer, lender or insurer reads it: FAA registration, prior tail numbers keyed on the serial number, reuse of the tail number, recent registry filings, and the NTSB accident record under this and every earlier registration.
Valid registration to Silvan Wayne C, an individual, certificate issued June 6, 2019, expires June 30, 2029. No fractional interest recorded. [1]
Experimental certificate for registered before jan 31, 2008; the FAA file gives no certificate date and no manufacture year. [1]
No earlier tail number is recorded against serial 0995156 for this model in the deregistered file. [2]
N3721S was previously assigned to 3 other aircraft: Balloon Works FIREFLY 7 (serial F7-095, cancelled February 25, 2013); Beech 77 (serial WA-218, cancelled December 29, 1980); Cessna 172E (serial 17250921, cancelled March 30, 1973). Histories keyed to the tail number alone can mix aircraft up; this check keys on the serial number. [2]
No bills of sale, loans or releases have reached the registry in recent weeks. The index covers only recent filings; older liens are in the records file. [3]
No NTSB investigation records located under N3721S. CLEAR means the query ran and returned nothing, not that nothing ever happened. [4]
These live in the FAA aircraft records file (every document ever filed against the aircraft) and, for larger aircraft, the International Registry. Part of the full report.
AD compliance against the logbooks and flight-activity reconciliation are researched layers of the full report.
- FAA Releasable Aircraft Database, master file, file of October 2, 2026. registry.faa.gov/
- FAA deregistered aircraft file (part of the same download), file of October 2, 2026. registry.faa.gov/
- FAA document index: registry documents received in recent weeks, file of October 2, 2026. registry.faa.gov/
- NTSB aviation accident database (CAROL), records through August 27, 2026. data.ntsb.gov/carol-main-public/basic-search
This automated check reads the public federal record. Nothing here is a legal opinion, an appraisal or a statement about the aircraft's condition; a CLEAR line is a statement about the searched record, not the aircraft.
Source: FAA Civil Aviation Registry, Releasable Aircraft Database, October 2, 2026. See this record on the FAA site · This record as data