# N3942H: 1947 Ercoupe 415-D, registration cancelled 2010-11-03

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: November 3, 2010
- Status when cancelled: First renewal notice
- Airframe: [Ercoupe 415-D](https://openairdocs.org/model/ercoupe-415-d) (registry code 0420326)
- 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: 4643
- Year built: 1947
- Type of aircraft: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Standard
- Airworthiness date: January 4, 1956
- Certificate issued: March 9, 2005
- Last registry action: March 18, 2008
- Mode S code: A4944B
- Owner when cancelled: [Wathen Thomas W Trustee](https://openairdocs.org/faa-owner/WATHEN%20THOMAS%20W%20TRUSTEE)
- Location: [Santa Barbara, CA](https://openairdocs.org/faa-place/CA/Santa%20Barbara)
- Owner type: Individual
- Owner's area on the map: 34.4490° N, 119.6054° W: Placed by OpenAirDocs at the center of ZIP code 93108, within about 3 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N3942H
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=3942H
- Page: https://openairdocs.org/deregistered/N3942H-2010-11-03

From the FAA registry file of November 5, 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 Ercoupe 415-D: https://openairdocs.org/model/ercoupe-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 LAX08CA094](https://openairdocs.org/ntsb/LAX08CA094), Mar 20, 2008: Ercoupe 415-D (N3942H), Riverside, CA, substantial damage. Probable cause: Water contamination of the fuel system due to the pilot's inadequate preflight and failure to adequately drain the water from the fuel system.

## 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 20080320832509A](https://openairdocs.org/incident/20080320832509A), Mar 20, 2008: Univar 415D (N3942H), Riverside/Rubi, CA, Substantial damage. (-23) During take off roll from rwy 24, the engine started to miss compression (engine sputtering). The pilot was able to get airborne and make a 180 degree…

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