ASN Wikibase Occurrence # 361743
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| Date: | Sunday 4 July 1993 |
| Time: | 10:30 LT |
| Type: |  Aerospatiale SA 316B Alouette III |
| Owner/operator: | Geo-seis Helicopters, Inc |
| Registration: | N3154Y |
| MSN: | 1428 |
| Total airframe hrs: | 2759 hours |
| Engine model: | TURBOMECA ARTOUSE IIIB |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Snyder, TX -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Unknown |
| Departure airport: | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
WHILE CONDUCTING A SEISMOGRAPHIC EQUIPMENT DROP UTILIZING A CAROUSEL AND 50 FOOT LONG LINE, THE HELICOPTER ENTERED A LEFT TURN AND DESCENDED INTO THE GROUND FOLLOWING THE FIRST DROP. DENSITY ALTITUDE AT THE TIME WAS APPROXIMATELY 5,000 FEET, WINDS WERE GREATER THAN 25 KNOTS FROM THE SOUTH AND THE HELICOPTER WAS WORKING GENERALLY FROM NORTH TO SOUTH ALONG A GRID PATTERN. THE AIRCRAFT GROSS WEIGHT WAS 400 POUNDS BELOW MAXIMUM CERTIFIED GROSS WEIGHT, AND EXAMINATION OF THE HELICOPTER FOLLOWING THE ACCIDENT PROVIDED NO EVIDENCE OF PRE IMPACT FAILURE OR MALFUNCTION.
Probable Cause: FAILURE OF THE PILOT IN COMMAND TO PROPERLY COMPENSATE FOR WIND CONDITIONS RESULTING IN THE LOSS OF DIRECTIONAL CONTROL THROUGH LOSS OF TAIL ROTOR AUTHORITY. FACTORS WERE HIGH WINDS, HIGH DENSITY ALTITUDE, AND FAILURE TO JETTISON THE EXTERNAL LOAD.
Accident investigation:
 |
|
Sources:
NTSB FTW93LA203
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 17-Mar-2024 07:15 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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