ASN Wikibase Occurrence # 359830
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| Date: | Wednesday 7 September 1994 |
| Time: | 12:24 LT |
| Type: |  Schweizer 269C |
| Owner/operator: | University Of North Dakota |
| Registration: | N61245 |
| MSN: | S1654 |
| Year of manufacture: | 1993 |
| Total airframe hrs: | 656 hours |
| Engine model: | LYCOMING HIO-360-DIA |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Grand Forks, ND -
 United States of America
|
| Phase: | Landing |
| Nature: | Training |
| Departure airport: | , NE (KGFK) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE FLIGHT INSTRUCTOR (CFI) REPORTED HE AND THE STUDENT PILOT WERE PRACTICING SIMULATED EMERGENCY AUTOROTATIONS TO A POWER RECOVERY. DURING THE ACCIDENT AUTOROTATION, THE CFI SAID HE ADJUSTED THE POWER TO 3100 RPM AND THEN TOLD THE STUDENT TO RECOVER. THE CFI NOTICED THAT THE HELICOPTER'S DESCENT HAD NOT BEEN ARRESTED, AND HE JOINED THE STUDENT ON THE CONTROLS. THE CFI WAS ATTEMPTING TO AUTOROTATE WHEN THE HELICOPTER LANDED HARD. POSTACCIDENT INSPECTION OF THE HELICOPTER AND ITS ENGINE DISCOVERED NO EVIDENCE OF PREIMPACT MECHANICAL ANOMALIES.
Probable Cause: the pilot-in-command's (CFI) delayed recovery from a practice autorotation. A factor associated with the accident was the student pilot's improper autorotation.
Accident investigation:
 |
|
Sources:
NTSB CHI94LA316
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 15-Mar-2024 15:02 | ASN Update Bot | Added |
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