# N3940H: 1947 Engineering & Research 415-D, registration cancelled 2017-09-27

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: September 27, 2017
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Engineering & Research 415-D](https://openairdocs.org/model/engineering-research-415-d) (registry code 0420306)
- Engine: [Continental A&C75 series](https://openairdocs.org/engine/continental-a-c75-series) (registry code 17005)
- Data sheets: [TCDS A-787](https://openairdocs.org/tcds/A-787) (OpenAirDocs)
- Serial number: 4641
- Year built: 1947
- Type of aircraft: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Standard
- Airworthiness date: March 11, 1958
- Certificate issued: February 9, 2011
- Last registry action: February 9, 2011
- Mode S code: A49405
- Owners when cancelled: [Ferren Larry](https://openairdocs.org/faa-owner/FERREN%20LARRY), [Ferren Barbara](https://openairdocs.org/faa-owner/FERREN%20BARBARA)
- Location: [Shinnston, WV](https://openairdocs.org/faa-place/WV/Shinnston)
- Owner type: Partnership
- Owner's area on the map: 39.3915° N, 80.2809° W: Placed by OpenAirDocs at the center of ZIP code 26431, within about 3 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N3940H
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=3940H
- Page: https://openairdocs.org/deregistered/N3940H-2017-09-27

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 Engineering & Research 415-D: https://openairdocs.org/model/engineering-research-415-d.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 ERA13LA406](https://openairdocs.org/ntsb/ERA13LA406), Sep 6, 2013: Engineering & Research 415-D (N3940H), Beaver Falls, PA, substantial damage. Probable cause: The owner/pilot’s failure to follow engine manufacturer recommendations for engine oil changes and spark plug cleaning and rotating when operating the airplane with 100 low lead fuel, which resulted…

## 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 20130906023679A](https://openairdocs.org/incident/20130906023679A), Sep 6, 2013: Engineering & Research 415-D (N3940H), Beaver Falls, PA, Substantial damage. The pilot of N3940H experienced a rough running engine after takeoff from kbvi runway 28 that continued during the departure climb out. The pilot contacted…

## Other aircraft with N3940H

- [Registered now](https://openairdocs.org/aircraft/N3940H): Zipline International P2 ZIP, S/N 18735P2576

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