# N611SU: 1966 Gray Miniplane DSA-1-G, registration cancelled 2002-04-22

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: April 22, 2002
- Status when cancelled: Triennial form not returned
- Airframe: [Gray Miniplane DSA-1-G](https://openairdocs.org/model/gray-miniplane-dsa-1-g) (registry code 83501D1)
- Engine: [Continental C85 series](https://openairdocs.org/engine/continental-c85-series) (registry code 17008)
- Data sheets: [TCDS E-233](https://openairdocs.org/tcds/E-233) (OpenAirDocs)
- Serial number: 43
- Year built: 1966
- Type of aircraft: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, amateur built
- Airworthiness date: May 9, 1980
- Certificate issued: November 21, 1995
- Last registry action: February 19, 2002
- Mode S code: A7F418
- Owner when cancelled: [Umphress Steven L](https://openairdocs.org/faa-owner/UMPHRESS%20STEVEN%20L)
- Location: [Varna, IL](https://openairdocs.org/faa-place/IL/Varna)
- Owner type: Individual
- Owner's area on the map: 41.0352° N, 89.2434° W: Placed by OpenAirDocs at the center of ZIP code 61375, within about 4 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N611SU
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=611SU
- Page: https://openairdocs.org/deregistered/N611SU-2002-04-22

From the FAA registry file of November 4, 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 Gray Miniplane DSA-1-G: https://openairdocs.org/model/gray-miniplane-dsa-1-g.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 CHI96LA188](https://openairdocs.org/ntsb/CHI96LA188), May 31, 1996: Gray Miniplane DSA-1-G (N611SU), Astoria, IL, substantial damage, 1 fatal. Probable cause: the pilot's failure to maintain clearance with the terrain while performing an aerobatic maneuver.

## 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 19960531012239A](https://openairdocs.org/incident/19960531012239A), May 31, 1996: Amtr DSA1G (N611SU), Astoria, IL, Substantial damage, 1 fatal. (.4)Witnesses reported seeing the pilot performing aerobatic maneuvers prior to the accident. They stated the pilot was performing a loop when he got too close…

## Other aircraft with N611SU

- [Registered now](https://openairdocs.org/aircraft/N611SU): Ryan Story S-20, S/N 03150037, built 2019

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