ASN Wikibase Occurrence # 361060
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| Date: | Monday 15 November 1993 |
| Time: | 13:00 LT |
| Type: |  Schweizer 269C |
| Owner/operator: | Schweizer Aircraft Corporation |
| Registration: | N41S |
| MSN: | S1660 |
| Total airframe hrs: | 4 hours |
| Engine model: | LYCOMING HIO-360-D1A |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Elmira, NY -
 United States of America
|
| Phase: | Landing |
| Nature: | Unknown |
| Departure airport: | (KELM) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PILOT AND CO-PILOT WERE PRACTICING AUTOROTATIONS DURING A TEST FLIGHT. DURING THEIR SEVENTH AUTOROTATION, AT AN ALTITUDE OF ABOUT 100 FEET ABOVE THE GROUND, THE ENGINE LOST POWER. THE AUTOROTATION WAS CONTINUED AND THE CREW REPORTED THEY ENCOUNTERED A DOWNDRAFT. THE HELICOPTER LANDED HARD AND WAS SUBSTANTIALLY DAMAGED. THE CONTROL TOWER REPORTED THE WINDS FROM A MAGNETIC BEARING OF 240 DEGREES AT 15 KNOTS WITH GUSTS TO 30 KNOTS. IN HIS WRITTEN REPORT CONCERNING THE ACCIDENT, THE PILOT SAID THE WINDS WERE FROM A MAGNETIC BEARING OF 230 DEGREES VARIABLE TO 270 DEGREES AT 23 KNOTS WITH GUSTS TO 35 KNOTS. THE MANUFACTURER'S FLIGHT MANUAL STATES: 'CONTROLLABILITY HAS BEEN SHOWN TO BE ADEQUATE IN 20 MPH WINDS FROM ANY DIRECTION.' THE REASON FOR THE ENGINE'S LOSS OF POWER WAS NOT DETERMINED.
Probable Cause: A LOSS OF ENGINE POWER AT A CRITICAL POINT ON A PRACTICE AUTOROTATION, AND FAILURE OF THE PILOT TO ATTAIN A FLARE FOR THE LANDING. FACTORS RELATED TO THE ACCIDENT WERE: THE ADVERSE WIND AND DOWNDRAFT.
Accident investigation:
 |
|
Sources:
NTSB BFO94LA011
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 16-Mar-2024 14:20 | ASN Update Bot | Added |
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