ASN Wikibase Occurrence # 300483
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| Date: | Saturday 11 June 2022 |
| Time: | 12:35 LT |
| Type: | SilverLight American Ranger AR-1 |
| Owner/operator: | Private |
| Registration: | N688G |
| MSN: | 0021 |
| Year of manufacture: | 2017 |
| Total airframe hrs: | 373 hours |
| Engine model: | Rotax 912ULS |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Butler, Pennsylvania -
 United States of America
|
| Phase: | Take off |
| Nature: | Private |
| Departure airport: | Butler, PA |
| Butler, PA | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot said the traffic pattern was busy, so he began the pre-rotation process as he taxied the gyroplane onto the runway to depart. At that time, the rotor disk rpm was at 140 rpm, which was 20 rpm above the recommended takeoff speed. The pilot said he slowly applied power because he had a passenger onboard, which may have allowed time for the disk speed to decay and become susceptible to blade flap. During the takeoff roll, the gyroplane's main rotor blades struck and severed the tail assembly, resulting in substantial damage. The pilot said there were no preimpact mechanical malfunctions or failures that would have precluded normal operation.
Probable Cause: The pilot's failure to monitor rotor disk speed on takeoff, which resulted in blade flapping and the main rotor blades striking the gyroplane's tail assembly.
Accident investigation:
 |
|
Sources:
NTSB ERA22LA269
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 03-Nov-2022 20:30 | ASN Update Bot | Added |
| 22-Jun-2023 18:42 | harro | Updated |
Corrections or additions? ... Edit this accident description
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