# N9904Y: 1961 Champion 7EC, registration cancelled 2010-07-30

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: July 30, 2010
- Status when cancelled: Triennial form not returned
- Airframe: [Champion 7EC](https://openairdocs.org/model/champion-7ec) (registry code 21101NM)
- Engine: [Continental C90 series](https://openairdocs.org/engine/continental-c90-series) (registry code 17009)
- Data sheets: [TCDS A-759](https://openairdocs.org/tcds/A-759), [TCDS E-252](https://openairdocs.org/tcds/E-252) (OpenAirDocs)
- Serial number: 7EC-755
- Year built: 1961
- Type of aircraft: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Standard
- Airworthiness date: July 6, 1961
- Certificate issued: July 9, 2007
- Last registry action: June 15, 2010
- Mode S code: ADD59E
- Owner when cancelled: [Great Planes Aviators Llp](https://openairdocs.org/faa-owner/GREAT%20PLANES%20AVIATORS%20LLP)
- Location: [Harrisburg, SD](https://openairdocs.org/faa-place/SD/Harrisburg)
- Owner type: Partnership
- Owner's area on the map: 43.4242° N, 96.6781° W: Placed by OpenAirDocs at the center of ZIP code 57032, within about 4 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N9904Y
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=9904Y
- Page: https://openairdocs.org/deregistered/N9904Y-2010-07-30

From the FAA registry file of November 3, 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 Champion 7EC: https://openairdocs.org/model/champion-7ec.md

## NTSB investigations (2)

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 CHI07CA155](https://openairdocs.org/ntsb/CHI07CA155), May 25, 2007: Champion 7EC (N9904Y), Sioux Falls, SD, substantial damage. Probable cause: The pilot's inadequate compensation for the wind conditions and the excessive pull-up during the initial takeoff climb which resulted in the stall. A factor associated with the accident was the…
- [NTSB CHI67D0205](https://openairdocs.org/ntsb/CHI67D0205), May 16, 1966: Champion 7EC (N9904Y), Urbana, IL, substantial damage

## FAA accident and incident reports (2)

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 20070525020189A](https://openairdocs.org/incident/20070525020189A), May 25, 2007: Bbavia 7EC (N9904Y), Sioux Falls, SD, Substantial damage. (-23) On may 25, 2007 at 8:10 am CDT a champ 7EC owned by great planes aviation llp and operated by the pilot [privacy data omitted] was taking off from a…
- [Incident 19830930062859I](https://openairdocs.org/incident/19830930062859I), Sep 30, 1983: Bbavia 7EC (N9904Y), Savory, IL, Minor damage. Student lost directional control on landing. Instructor not able to correct. Aircraft ground looped.

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