# N9990: 1974 Berkshire Mfg. CONCEPT 70

- Status: Valid registration
- Airframe: [Berkshire Mfg. CONCEPT 70](https://openairdocs.org/model/berkshire-mfg-concept-70) (registry code 1240104, 1 seats)
- Engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000)
- Serial number: 16
- Year built: 1974
- Type: Glider
- Engine type: None
- Airworthiness: Experimental, amateur built
- Airworthiness date: May 24, 1979
- Certificate issued: August 15, 2020
- Expires: August 31, 2027
- Mode S code: ADF66A
- Registered owner: [Leonard Steven E](https://openairdocs.org/faa-owner/LEONARD%20STEVEN%20E)
- Location: [Wichita, KS](https://openairdocs.org/faa-place/KS/Wichita)
- Owner type: Individual
- Owner's area on the map: 37.7024° N, 97.4389° W: Placed by OpenAirDocs at the center of ZIP code 67212, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=9990
- Page: https://openairdocs.org/aircraft/N9990

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 (Berkshire Mfg. CONCEPT 70)

None in force.

### Matched by engine (NONE)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N9990.

## FAA accident and incident reports

None matched to N9990.

## 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 N9990

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N9990 before.

- [Cancelled 1935-07-07](https://openairdocs.org/deregistered/N9990-1935-07-07): Travel Air 4-D, S/N 1166. Owner: [Murdock M Marcellus](https://openairdocs.org/faa-owner/MURDOCK%20M%20MARCELLUS), [Wichita, KS](https://openairdocs.org/faa-place/KS/Wichita)

## Related

- Other Berkshire Mfg. CONCEPT 70 aircraft: https://openairdocs.org/model/berkshire-mfg-concept-70/aircraft.md
- The NONE engine: https://openairdocs.org/engine/none.md

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