# N4465B: 1991 Cosmos 912S, registration cancelled 2018-03-23

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: March 23, 2018
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Cosmos 912S](https://openairdocs.org/model/cosmos-912s) (registry code 05904R2)
- Engine: [Rotax 912S series](https://openairdocs.org/engine/rotax-912s-series) (registry code 55570)
- Data sheets: [TCDS E00051EN](https://openairdocs.org/tcds/E00051EN) (OpenAirDocs)
- Serial number: 6811371L1
- Year built: 1991
- Type of aircraft: Weight-shift-control
- Engine type: 4 cycle
- Airworthiness: Experimental, registered before 01/31/08
- Airworthiness date: January 28, 2008
- Certificate issued: April 15, 2014
- Last registry action: April 15, 2014
- Mode S code: A563F0
- Owner when cancelled: [Mt Aero-Tech LLC](https://openairdocs.org/faa-owner/MT%20AERO-TECH%20LLC)
- Location: [Fort Benton, MT](https://openairdocs.org/faa-place/MT/Fort%20Benton)
- Owner type: Corporation
- Owner's area on the map: 47.9289° N, 110.6517° W: Placed by OpenAirDocs at the center of ZIP code 59442, within about 16 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N4465B
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4465B
- Page: https://openairdocs.org/deregistered/N4465B-2018-03-23

From the FAA registry file of October 29, 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 Cosmos 912S: https://openairdocs.org/model/cosmos-912s.md

## Other aircraft with N4465B

- [Registered now](https://openairdocs.org/aircraft/N4465B): DJI AGRAS T50, S/N 1581F6BUB248U001P5X9
- [Cancelled 2005-04-04](https://openairdocs.org/deregistered/N4465B-2005-04-04): Cessna 170B, S/N 26809, built 1955. Triennial form not returned. Owner: [Gale Guy C](https://openairdocs.org/faa-owner/GALE%20GUY%20C), [Tempe, AZ](https://openairdocs.org/faa-place/AZ/Tempe)

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