ASN Wikibase Occurrence # 39277
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| Date: | Friday 11 November 1994 |
| Time: | 16:40 LT |
| Type: |  Schweizer 269C (300C) |
| Owner/operator: | Pacific Shore Aviation |
| Registration: | N60TA |
| MSN: | S1510 |
| Total airframe hrs: | 1344 hours |
| Engine model: | Lycoming HIO-360-D1A |
| Fatalities: | Fatalities: 1 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Valencia, CA -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Training |
| Departure airport: | Van Nuys, CA (KVNY) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE STUDENT FLEW TO THE ASSIGNED PRACTICE AREA, PERFORMED UNDETERMINED MANEUVERS, AND CRASHED INTO A DIRT EMBANKMENT ADJACENT TO AN OPEN FIELD. THERE WERE NO WITNESSES. EXAMINATION OF THE WRECKAGE REVEALED A MAIN ROTOR BLADE (MRB) HAD SEVERED THE TAIL ROTOR ASSEMBLY PRIOR TO THE HELICOPTER COMING TO FINAL REST. THE MRB, THE TAIL ROTOR BLADE ASSEMBLY, THE HORIZONTAL STABILIZER, AND THE TAIL STINGER WERE FOUND IN THE FIELD UP TO 147 FEET FROM THE MAIN WRECKAGE. THE MRB WAS OBSERVED CONED UPWARD AT A 30-DEGREE ANGLE OVER THE OUTBOARD 5-FOOT-LONG PORTION OF ITS SPAN. NO EVIDENCE WAS FOUND IN THE HEAVILY FIRE DAMAGED WRECKAGE OF PREIMPACT MECHANICAL OR STRUCTURAL FAILURE. STRUCTURAL DEFORMATION TO THE FRAME WAS CONSISTENT WITH THE HELICOPTER HAVING IMPACTED THE EMBANKMENT WHILE DESCENDING WITH FORWARD AIRSPEED. NO GROUND SCAR WAS OBSERVED IN THE SOFT DIRT SURROUNDING THE MAIN WRECKAGE. REVIEW OF THE STUDENT'S RECONSTRUCTED FLIGHT TRAINING RECORDS INDICATED THAT POSSIBLE TRAINING DEFICIENCIES EXISTED IN AREAS INCLUDING RESPONDING TO EQUIPMENT MALFUNCTIONS AND CROSSWIND TAKEOFFS AND LANDINGS.
Probable Cause: the pilot's failure to maintain adequate clearance from a dirt embankment while performing an undetermined maneuver.
Accident investigation:
 |
|
Sources:
NTSB LAX95FA033
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 21-Dec-2016 19:23 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 09-Apr-2024 18:22 | ASN Update Bot | Updated [Time, Other fatalities, Departure airport, Source, Narrative, Category, Accident report] |
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