ASN Wikibase Occurrence # 355750
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| Date: | Friday 13 June 1997 |
| Time: | 19:35 LT |
| Type: |  Robinson R22 BETA |
| Owner/operator: | Helicopter Experts |
| Registration: | N4041W |
| MSN: | 1666 |
| Year of manufacture: | 1991 |
| Total airframe hrs: | 2151 hours |
| Engine model: | Lycoming O-320-B2C |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | San Antonio, TX -
 United States of America
|
| Phase: | Landing |
| Nature: | Training |
| Departure airport: | (KSAT) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The flight instructor was instructing the student pilot in straight-in power recovery autorotations to the center sod. The student initiated the maneuver from an altitude of 1,100 feet MSL, and an airspeed of 65 KIAS, with the rotor RPM in the 'green.' During the autorotation, at 40 feet AGL, the student initiated a cyclic flare. 'As the flare continued, the descent rate slowed.' The student 'started to apply forward cyclic to level the helicopter when it started a left yaw.' The flight instructor got on the controls to align the aircraft with the landing direction, and the low rotor RPM warning horn activated. He 'rolled on the throttle and the helicopter yawed quickly to the right.' After he corrected for the yaw the helicopter 'fell approximately 10 to 15 feet straight down.' It 'impacted [the ground] hard to where the skids were spread out and the seats were collapsed down.'
Probable Cause: The flight instructor's inadequate supervision during the practice autorotation and his failure to maintain rotor RPM.
Accident investigation:
 |
|
Sources:
NTSB FTW97LA226
History of this aircraft
Other occurrences involving this aircraft
| 16 February 2008 | G-CCVY | Private | 0 | 2 nm north-east of Girvan, near Prestwick, Ayrshire |  |
w/o |
| Heavy landing | ||||||
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 12-Mar-2024 15:12 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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