# N221HV: not currently registered

- Registered now: No (not in the FAA registry file). The mark may be reserved or free to assign
- Earlier aircraft: 1
- Last cancelled: January 11, 2023
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=221HV
- Page: https://openairdocs.org/aircraft/N221HV

## Aircraft that carried N221HV

- [Cancelled 2023-01-11](https://openairdocs.org/deregistered/N221HV-2023-01-11): Kitty Hawk HEAVISIDE 2, S/N H2.2-003. Registration expired, pending cancellation. Owner: [Kitty Hawk Corp](https://openairdocs.org/faa-owner/KITTY%20HAWK%20CORP), [Palo Alto, CA](https://openairdocs.org/faa-place/CA/Palo%20Alto)

## NTSB investigations on N221HV (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 DCA20CA003](https://openairdocs.org/ntsb/DCA20CA003), Oct 17, 2019: Kitty Hawk Heaviside2 (N221HV), Tres Pinos, CA, substantial damage. Probable cause: a software timing error initiated by a battery charging script that was not properly terminated prior to the test flight due to operator error.

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