# N661FB: 1991 Christen Industries A-1, registration cancelled 2008-05-20

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: May 20, 2008
- Status when cancelled: Triennial form not returned
- Airframe: [Christen Industries A-1](https://openairdocs.org/model/christen-industries-a-1) (registry code 221020X)
- Engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514)
- Data sheets: [TCDS A22NM](https://openairdocs.org/tcds/A22NM) (OpenAirDocs)
- Serial number: 1175
- Year built: 1991
- Type of aircraft: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Standard, normal
- Airworthiness date: March 6, 1991
- Certificate issued: December 18, 1998
- Last registry action: March 18, 2008
- Mode S code: A8B86F
- Owners when cancelled: [State Of South Dakota](https://openairdocs.org/faa-owner/STATE%20OF%20SOUTH%20DAKOTA), [South Dakota Game Fish & Parks](https://openairdocs.org/faa-owner/SOUTH%20DAKOTA%20GAME%20FISH%20%26%20PARKS)
- Location: [Pierre, SD](https://openairdocs.org/faa-place/SD/Pierre)
- Owner type: Government
- Owner's area on the map: 44.5276° N, 100.3091° W: Placed by OpenAirDocs at the center of ZIP code 57501, within about 13 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N661FB
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=661FB
- Page: https://openairdocs.org/deregistered/N661FB-2008-05-20

From the FAA registry file of October 31, 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 Christen Industries A-1: https://openairdocs.org/model/christen-industries-a-1.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 CHI07TA241](https://openairdocs.org/ntsb/CHI07TA241), Jul 30, 2007: Christen Industries A-1 (N661FB), Elm Springs, SD, substantial damage. Probable cause: The pilot not maintaining clearance from the rising terrain. A factor contributing to the accident was the rising terrain.

## 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 20070730022589A](https://openairdocs.org/incident/20070730022589A), Jul 30, 2007: Chris A1 (N661FB), Elm Springs, SD, Destroyed. (-23) The accident occurred on 7-30-07 about 0700 MDT near Elm Springs, SD. The pilot and passenger (gunner) who work for the state of south dakota were…

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