ASN Wikibase Occurrence # 296027
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| Date: | Monday 7 April 2003 |
| Time: | 14:45 LT |
| Type: |  Schweizer 269C |
| Owner/operator: | Ballard Aviation Inc. |
| Registration: | N8968F |
| MSN: | 630212 |
| Year of manufacture: | 1973 |
| Total airframe hrs: | 11796 hours |
| Engine model: | Lycoming HIO-360-D1A |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Wichita, Kansas -
 United States of America
|
| Phase: | Unknown |
| Nature: | Training |
| Departure airport: | Wichita Dwight D. Eisenhower National Airport, KS (ICT/KICT) |
| Wichita, KS (71K) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The helicopter was substantially damaged during a run-on landing following a practice autorotation. The flight instructor stated that during the landing the helicopter rotated forward "lifting the tailboom into the path of the main-rotor, which severed the tailboom." The aircraft turned to the left approximately 90 degrees and came to a rest. The instructor was demonstrating a full touchdown autorotation to a run-on landing on the grass area adjacent to a paved runway. The dual student reported that the touchdown itself was light and the helicopter did not decelerate very rapidly until the end of the ground run. According to both pilots the grass landing area was smooth, firm and dry. Neither pilot reported any malfunctions with the helicopter or the engine prior to the accident. The pilot's flight manual included a caution stating: "Avoid rapid lowering of collective pitch control after ground contact." The FAA Rotorcraft Flying Handbook specifies that when conducting a running landing, "due to the increased ground friction when you lower the collective, the helicopter's nose might pitch forward. Exercise caution not to correct this pitching movement with aft cyclic since this movement could result in the rotor making contact with the tailboom."
Probable Cause: The premature lowering of the collective and the improper use of the cyclic during the run-on landing performed by the flight instructor, as well as the main rotor/tail boom contact. Contributing factors were the intentional run-on landing, the grass landing surface and the severed tail boom.
Accident investigation:
 |
|
Sources:
NTSB CHI03LA098
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 13-Oct-2022 15:37 | ASN Update Bot | Added |
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