# N21H: Smith Miniplane DSA-1, registration cancelled 1991-08-21

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: August 21, 1991
- Status when cancelled: Triennial form not returned
- Airframe: [Smith Miniplane DSA-1](https://openairdocs.org/model/smith-miniplane-dsa-1) (registry code 835010P)
- Serial number: 384015A
- Type of aircraft: Fixed wing single engine
- Certificate issued: August 9, 1988
- Last registry action: July 25, 1991
- Mode S code: A1B7D8
- Owner when cancelled: [Navan William J Jr](https://openairdocs.org/faa-owner/NAVAN%20WILLIAM%20J%20JR)
- Location: [Sterling, CT](https://openairdocs.org/faa-place/CT/Sterling)
- Owner type: Individual
- Owner's area on the map: 41.7305° N, 71.8193° W: Placed by OpenAirDocs at the center of ZIP code 06377, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N21H
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=21H
- Page: https://openairdocs.org/deregistered/N21H-1991-08-21

From the FAA registry file of November 7, 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 Smith Miniplane DSA-1: https://openairdocs.org/model/smith-miniplane-dsa-1.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 NYC89DNE02](https://openairdocs.org/ntsb/NYC89DNE02), May 12, 1989: Smith Mini DSA-1 (N21H), Sterling, CT, substantial damage, 1 fatal. Probable cause: THE PILOT'S FAILURE TO MAINTAIN CONTROL OF THE EXPERIMENTAL AIRCRAFT WHILE PERFORMING AEROBATIC MANEUVERS, AND THE AIRCRAFT'S RESULTANT UNCONTROLLED DESCENT INTO 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 19890512011319A](https://openairdocs.org/incident/19890512011319A), May 12, 1989: Amtrsm DSA1 (N21H), Sterling, CT, Substantial damage, 1 fatal. Low altitude acrobatics. Hammerhead stall. Entered inverted spiral, stopped rotation dived vertically into ground.

## Other aircraft with N21H

- [Registered now](https://openairdocs.org/aircraft/N21H): Cessna 680, S/N 680-0335, built 2012
- [Cancelled 2015-01-08](https://openairdocs.org/deregistered/N21H-2015-01-08): Hitchcock Harold James CHRISTEN EAGLE II, S/N HITCHCOCK-001, built 1999. Third renewal notice. Owner: [Red Eagle II LLC](https://openairdocs.org/faa-owner/RED%20EAGLE%20II%20LLC), [Sharpsburg, GA](https://openairdocs.org/faa-place/GA/Sharpsburg)
- [Cancelled 1962-11-01](https://openairdocs.org/deregistered/N21H-1962-11-01): Bell 47B, S/N 16. Owner: [Rick Helicopters Inc](https://openairdocs.org/faa-owner/RICK%20HELICOPTERS%20INC), [Los Angeles, CA](https://openairdocs.org/faa-place/CA/Los%20Angeles)
- [Cancelled 1929-11-01](https://openairdocs.org/deregistered/N21H-1929-11-01): Curtiss Wright ROBIN C-1, S/N 390

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