# N42940: 2004 Olson B D/Olson D W BDO 18

- Status: Valid registration
- Airframe: [Olson B D/Olson D W BDO 18](https://openairdocs.org/model/olson-b-d-olson-d-w-bdo-18) (registry code 05619CD, 2 seats)
- Engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999)
- Serial number: 21901
- Year built: 2004
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, amateur built
- Airworthiness date: October 26, 2005
- Certificate issued: March 18, 2026
- Expires: March 31, 2033
- Mode S code: A5200B
- Registered owner: [Olson David W](https://openairdocs.org/faa-owner/OLSON%20DAVID%20W)
- Location: [Otho, IA](https://openairdocs.org/faa-place/IA/Otho)
- Owner type: Individual
- Owner's area on the map: 42.4035° N, 94.1345° W: Placed by OpenAirDocs at the center of ZIP code 50569, within about 3 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=42940
- Page: https://openairdocs.org/aircraft/N42940

From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination.

## ADs that may apply (OpenAirDocs): 0 in force

### Matched by airframe (Olson B D/Olson D W BDO 18)

None in force.

### Matched by engine (Amateur-built UNKNOWN ENG)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N42940.

## FAA accident and incident reports

None matched to N42940.

## Service difficulty reports

None filed for this aircraft. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

## STCs that may be installed (OpenAirDocs)

None matched to this aircraft's models.

## Earlier aircraft with N42940

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N42940 before.

- [Cancelled 1990-03-21](https://openairdocs.org/deregistered/N42940-1990-03-21): Piper PA-28-181, S/N 288390042. Exported to France. Owner: [Niederhauser Airways Inc](https://openairdocs.org/faa-owner/NIEDERHAUSER%20AIRWAYS%20INC), [Waterloo, SD](https://openairdocs.org/faa-place/SD/Waterloo)
- [Cancelled 1974-02-20](https://openairdocs.org/deregistered/N42940-1974-02-20): Cessna 180J, S/N 18052388, built 1974. Exported to Mexico

## Related

- Other Olson B D/Olson D W BDO 18 aircraft: https://openairdocs.org/model/olson-b-d-olson-d-w-bdo-18/aircraft.md
- The Amateur-built UNKNOWN ENG engine: https://openairdocs.org/engine/amateur-built-unknown-eng.md

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