# N143WW: 1986 Grimes Jon C SNS-9, registration cancelled 2007-05-23

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: May 23, 2007
- Status when cancelled: Triennial form not returned
- Airframe: [Grimes Jon C SNS-9](https://openairdocs.org/model/grimes-jon-c-sns-9) (registry code 05655YN)
- Engine: [Bombardier ROTAX (ALL)](https://openairdocs.org/engine/bombardier-rotax-all) (registry code 09050)
- Serial number: 3
- Year built: 1986
- Type of aircraft: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, amateur built
- Airworthiness date: April 29, 1997
- Certificate issued: February 3, 1994
- Last registry action: April 17, 2007
- Mode S code: A0AFDE
- Owner when cancelled: [Wolverton William R](https://openairdocs.org/faa-owner/WOLVERTON%20WILLIAM%20R)
- Location: [Niles, MI](https://openairdocs.org/faa-place/MI/Niles)
- Owner type: Individual
- Owner's area on the map: 41.8319° N, 86.2308° W: Placed by OpenAirDocs at the center of ZIP code 49120, within about 6 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N143WW
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=143WW
- Page: https://openairdocs.org/deregistered/N143WW-2007-05-23

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 Grimes Jon C SNS-9: https://openairdocs.org/model/grimes-jon-c-sns-9.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 CHI05CA139](https://openairdocs.org/ntsb/CHI05CA139), Jun 10, 2005: Grimes SNS-9 (N143WW), Niles, MI, substantial damage. Probable cause: The pilot's failure to maintain airspeed which led to the inadvertent stall/mush, and subsequent impact with the ground.

## 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 20050610013559A](https://openairdocs.org/incident/20050610013559A), Jun 10, 2005: Amtr SNS9 (N143WW), Niles, MI, Substantial damage. (-23) Aircraft landed short of runway.

## Other aircraft with N143WW

- [Registered now](https://openairdocs.org/aircraft/N143WW): Cirrus Design SR22T, S/N 1734, built 2018

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