# Accident 20190618007489A: William S Harten CAVALON, Nephi, UT, June 18, 2019

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: June 18, 2019, 20:20 local time
- Place: Nephi, UT
- Airport: Nephi Municipal
- Damage: Substantial damage
- Phase of flight: Unknown
- Operating rules: General operating rules (Part 91)
- Location: 39.7475° N, 111.8714° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=39.7475&lon=-111.8714&mi=10
- Aircraft: N882M, a cancelled registration (https://openairdocs.org/deregistered/N882M-2022-07-30) (OpenAirDocs)
- Registry model: William S Harten CAVALON (registry code 05638JH, https://openairdocs.org/model/william-s-harten-cavalon) (OpenAirDocs)
- Registry engine: Rotax 915 IS series (registry code 55620, https://openairdocs.org/engine/rotax-915-is-series) (OpenAirDocs)
- Reported make and model: WILLIAM S HARTEN CAVALON
- Reported engine: ROTAX 915IS
- People aboard: 1
- Fatal injuries: 0
- Other injuries: 1
- Pilot certificates: Private pilot
- Pilot flight hours: 227 total, 82 in this make and model, 7 in the last 90 days
- NTSB investigation: [NTSB GAA19CA359](https://openairdocs.org/ntsb/GAA19CA359) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20190618007489A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

AFTER SEVERAL HOURS OF DELAYS, THE PILOT WAS CONFIDENT THAT THE AIRCRAFT WAS READY FOR ITS FIRST TEST FLIGHT WITH HIM AT THE CONTROLS.  THE PILOT HAD NEVER FLOWN THIS TYPE OF GYROPLANE EQUIPPED WITH THE ROTAX 915 IS ENGINE BEFORE, AND WAS SURPRISED BY THE AMOUNT OF YAW PRODUCED BY THE EXTRA 35% OF POWER.  THE AIRCRAFT ENTERED A SIDESLIP, WHICH WAS ERRONEOUSLY IDENTIFIED BY THE PILOT AS A FLIGHT CONTROL MALFUNCTION.  THE AIRCRAFT CLIMBED TO ABOUT 50 FEET AGL AT ABOUT 50 KNOTS GROUNDSPEED WITH A SIGNIFICANT (30+ DEGREE) SIDESLIP ANGLE, AND THEN SETTLED BACK TOWARD THE GROUND.  THE PILOT AIMED THE GYROPLANE AWAY FROM HARD SURFACES, AND THE AIRCRAFT IMPACTED TERRAIN, RESULTING IN DAMAGE TO THE AIRCRAFT AND LACERATIONS TO THE PILOTS HEAD.

## The NTSB's investigation of this event (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 GAA19CA359](https://openairdocs.org/ntsb/GAA19CA359), Jun 19, 2019: Autogyro Cavalon (N882M), Nephi, UT, substantial damage. Probable cause: The pilot's insufficient rudder input during takeoff, which resulted in a loss of yaw control and a hard landing.

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. For accidents, the NTSB's own investigation is the fuller record.

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