# N9021M: Robinson Helicopter R22, registration cancelled 1991-02-15

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: February 15, 1991
- Status when cancelled: Valid registration
- Airframe: [Robinson Helicopter R22](https://openairdocs.org/model/robinson-helicopter-r22) (registry code 7640102)
- Data sheets: [TCDS H10WE](https://openairdocs.org/tcds/H10WE) (OpenAirDocs)
- Serial number: 0021
- Type of aircraft: Rotorcraft
- Certificate issued: January 17, 1989
- Last registry action: January 18, 1989
- Mode S code: AC7921
- Owner when cancelled: [Suffolk Helicopters Inc](https://openairdocs.org/faa-owner/SUFFOLK%20HELICOPTERS%20INC)
- Location: [Ronkonkoma, NY](https://openairdocs.org/faa-place/NY/Ronkonkoma)
- Owner type: Corporation
- Owner's area on the map: 40.8129° N, 73.1156° W: Placed by OpenAirDocs at the center of ZIP code 11779, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N9021M
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=9021M
- Page: https://openairdocs.org/deregistered/N9021M-1991-02-15

From the FAA registry file of November 12, 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 Robinson Helicopter R22: https://openairdocs.org/model/robinson-helicopter-r22.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 NYC89LA068](https://openairdocs.org/ntsb/NYC89LA068), Jan 18, 1989: Robinson R-22HP (N9021M), Ronkonkoma, NY, substantial damage. Probable cause: THE PILOT'S IMPROPER OPERATION OF THE ROTORCRAFT FLIGHT CONTROLS AND A RESULTING LOW ROTOR RPM CONDITION.
- [NTSB FTW80FRJ15](https://openairdocs.org/ntsb/FTW80FRJ15), May 1, 1980: Robinson R-22 (N9021M), Shreveport, LA, 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 19890118000889A](https://openairdocs.org/incident/19890118000889A), Jan 18, 1989: Robsin R22 (N9021M), Islip, NY, Substantial damage. Indicates collective too high on takeoff,rotor RPM decayed. Impacted high vertical force.
- [Accident 19800501011259A](https://openairdocs.org/incident/19800501011259A), May 1, 1980: Robsin R22 (N9021M), Shreveport, LA, Substantial damage. Made descent to hover. Student allowed rotor RPM to decay. Landed on back of skids. Rotor hit ground.

## Other aircraft with N9021M

- [Cancelled 2026-09-04](https://openairdocs.org/deregistered/N9021M-2026-09-04): Weatherly 620B, S/N 1621, built 1996. Exported to Mexico. Owner: [Kenmore Crew Leasing Inc Trustee](https://openairdocs.org/faa-owner/KENMORE%20CREW%20LEASING%20INC%20TRUSTEE), [Bellingham, WA](https://openairdocs.org/faa-place/WA/Bellingham)
- [Cancelled 2009-06-25](https://openairdocs.org/deregistered/N9021M-2009-06-25): Lais Ray C BARNETT J4B2, S/N 317-2. Exported to Finland. Owner: Vantae
- [Cancelled 1970-04-09](https://openairdocs.org/deregistered/N9021M-1970-04-09): Cessna 180H, S/N 18052121. Exported to Republic of the Congo. Owner: [Cessna Aircraft Co](https://openairdocs.org/faa-owner/CESSNA%20AIRCRAFT%20CO)

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