# N5779N: 1972 Helio HST-550A, registration cancelled 2012-12-10

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: December 10, 2012
- Status when cancelled: Sale reported, canceled
- Airframe: [Helio HST-550A](https://openairdocs.org/model/helio-hst-550a) (registry code 4301006)
- Engine: [Pratt & Whitney Canada PT6A-60A](https://openairdocs.org/engine/pratt-whitney-canada-pt6a-60a) (registry code 52043)
- Data sheets: [TCDS A4EA](https://openairdocs.org/tcds/A4EA), [TCDS E4EA](https://openairdocs.org/tcds/E4EA) (OpenAirDocs)
- Serial number: 006
- Year built: 1972
- Type of aircraft: Fixed wing single engine
- Engine type: Turbo-prop
- Airworthiness: Experimental, showing compliance
- Airworthiness date: April 13, 1988
- Last registry action: August 6, 2009
- Mode S code: A76C0A
- Location: [Lewes, DE](https://openairdocs.org/faa-place/DE/Lewes)
- Owner type: Individual
- Owner's area on the map: 38.7287° N, 75.1685° W: Placed by OpenAirDocs at the center of ZIP code 19958, within about 4 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N5779N
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=5779N
- Page: https://openairdocs.org/deregistered/N5779N-2012-12-10

From the FAA registry file of October 29, 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 Helio HST-550A: https://openairdocs.org/model/helio-hst-550a.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 ATL90LA182](https://openairdocs.org/ntsb/ATL90LA182), Sep 29, 1990: Helio HST-550A (N5779N), Mobile, AL, destroyed. Probable cause: THE PILOT'S INTENTIONAL ATTEMPTED TAKEOFF WITH A KNOWN TAILWIND COMPONENT. FACTORS RELATING TO THE ACCIDENT WERE THE TAILWIND, TREES AND UTILITY LINES ON THE DEPARTURE END OF THE TAKEOFF AREA.

## 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 19900929043379A](https://openairdocs.org/incident/19900929043379A), Sep 29, 1990: Helio HST550A (N5779N), Mobile, AL, Destroyed. Struck trees and power line departing parking lot with quartering tailwind. Report partial powerloss not confirmed.

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