# N46951: 1943 Interstate S-1B1, registration cancelled 2010-05-14

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: May 14, 2010
- Status when cancelled: Triennial form not returned
- Airframe: [Interstate S-1B1](https://openairdocs.org/model/interstate-s-1b1) (registry code 1850302)
- Engine: [Lycoming 0-290 series](https://openairdocs.org/engine/lycoming-0-290-series) (registry code 41506)
- Data sheets: [TCDS A-754](https://openairdocs.org/tcds/A-754), [TCDS E-229](https://openairdocs.org/tcds/E-229) (OpenAirDocs)
- Serial number: 168
- Year built: 1943
- Type of aircraft: Fixed wing single engine
- Engine type: 4 cycle
- Airworthiness: Standard, normal
- Airworthiness date: May 1, 1989
- Certificate issued: December 11, 1985
- Last registry action: March 16, 2010
- Mode S code: A5BE2B
- Owner when cancelled: [Alamo Liaison Group](https://openairdocs.org/faa-owner/ALAMO%20LIAISON%20GROUP)
- Location: [San Antonio, TX](https://openairdocs.org/faa-place/TX/San%20Antonio)
- Owner type: Corporation
- Owner's area on the map: 29.2013° N, 98.5090° W: Placed by OpenAirDocs at the center of ZIP code 78264, within about 5 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N46951
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=46951
- Page: https://openairdocs.org/deregistered/N46951-2010-05-14

From the FAA registry file of November 5, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

ADs and bulletins for the Interstate S-1B1: https://openairdocs.org/model/interstate-s-1b1.md

## NTSB investigations (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB FTW94FA102](https://openairdocs.org/ntsb/FTW94FA102), Mar 19, 1994: Interstate S-1B1 (N46951), San Antonio, TX, destroyed, 4 fatal. Probable cause: THE FAILURE OF THE PILOT OF THE OTHER AIRCRAFT TO MAINTAIN ADEQUATE CLEARANCE DURING FORMATION FLIGHT. A FACTOR WAS THE PILOT'S INADEQUATE PREFLIGHT PLANNING AND PREPARATION REGARDING INFLIGHT…

## FAA accident and incident reports (1)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Accident 19940319005852A](https://openairdocs.org/incident/19940319005852A), Mar 19, 1994: Arctic S1B1 (N46951), San Antonio, TX, Destroyed, 2 fatal. 3 Aircraft on photo formation. Interstate L6 and L2 a tcraft n 596BH. Collided. Piper L3 not involved.

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