# N6840U: not currently registered

- Registered now: No (not in the FAA registry file). The mark may be reserved or free to assign
- Earlier aircraft: 2
- Last cancelled: August 16, 1988
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=6840U
- Page: https://openairdocs.org/aircraft/N6840U

## Aircraft that carried N6840U

- [Cancelled 1988-08-16](https://openairdocs.org/deregistered/N6840U-1988-08-16): Cessna 402C, S/N 402C0486. N-number assigned, not yet registered
- [Cancelled 1972-02-01](https://openairdocs.org/deregistered/N6840U-1972-02-01): Mooney M20C, S/N 2545. Owner: [Del Valle Nicolas](https://openairdocs.org/faa-owner/DEL%20VALLE%20NICOLAS), Santurce

## NTSB investigations on N6840U (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 MIA66F0154](https://openairdocs.org/ntsb/MIA66F0154), Aug 13, 1965: Mooney M21 (N6840U), Arecibo, PR, substantial damage

## FAA accident and incident reports on N6840U (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.

- [Incident 19860321013599I](https://openairdocs.org/incident/19860321013599I), Mar 21, 1986: Cessna 402C (N6840U), West Palm Beach, FL. Aborted takeoff when nose baggage door opened. Right main tire blew on return to runway.

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