# N5666F: 1966 Alon A2, registration cancelled 2014-03-17

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: March 17, 2014
- Status when cancelled: Valid registration
- Airframe: [Alon A2](https://openairdocs.org/model/alon-a2) (registry code 0540102)
- Engine: [Continental C90 series](https://openairdocs.org/engine/continental-c90-series) (registry code 17009)
- Data sheets: [TCDS A-787](https://openairdocs.org/tcds/A-787), [TCDS E-252](https://openairdocs.org/tcds/E-252) (OpenAirDocs)
- Serial number: A-166
- Year built: 1966
- Type of aircraft: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Standard, normal
- Airworthiness date: May 18, 1966
- Certificate issued: December 3, 2013
- Last registry action: December 3, 2013
- Mode S code: A74064
- Owners when cancelled: [Harder Ronald E](https://openairdocs.org/faa-owner/HARDER%20RONALD%20E), [Harder Marilyn L](https://openairdocs.org/faa-owner/HARDER%20MARILYN%20L)
- Location: [Concord, NE](https://openairdocs.org/faa-place/NE/Concord)
- Owner type: Co-owned
- Owner's area on the map: 42.3874° N, 96.9300° W: Placed by OpenAirDocs at the center of ZIP code 68728, within about 3 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N5666F
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=5666F
- Page: https://openairdocs.org/deregistered/N5666F-2014-03-17

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 Alon A2: https://openairdocs.org/model/alon-a2.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 CHI68D0517](https://openairdocs.org/ntsb/CHI68D0517), Jul 14, 1967: Alon A-2 (N5666F), Litchfield, IL, substantial damage

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