ASN Wikibase Occurrence # 367186
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| Date: | Thursday 5 April 1990 |
| Time: | 17:55 LT |
| Type: |  Aerospatiale SA 315B Lama |
| Owner/operator: | Nthrn Geophysical Of America |
| Registration: | N37903 |
| MSN: | 2565 |
| Total airframe hrs: | 5457 hours |
| Engine model: | TURBOMECA ARTOUSTE IIIB |
| Fatalities: | Fatalities: 0 / Occupants: 5 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Trading Bay, AK -
 United States of America
|
| Phase: | En route |
| Nature: | Executive |
| Departure airport: | Drift River, AK |
| Granite Point, AK | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PLT RPRTD THAT WHEN HE TOOK OFF, THERE WAS 1-1/2 TO 2 MI VIS WITH LIGHT SNOW. ABOUT 5 MIN LATER, HE ENCOUNTERED WHITEOUT CONDITIONS & INITIATED A LANDING. HOWEVER, THE HELICOPTER TOUCHDOWN HARD & THE MAIN ROTOR BLADES CONTACTED THE TAIL BOOM, WHICH RESULTED IN EXTENSIVE DAMAGE.
Probable Cause: THE PILOT'S INADVERTENT FLIGHT INTO INSTRUMENT METEOROLOGICAL CONDITIONS (IMC). FACTORS RELATED TO THE ACCIDENT WERE: SNOW COVERED TERRAIN, ADVERSE WEATHER CONDITIONS, AND SPATIAL DISORIENTATION OF THE PILOT, DUE TO LACK OF VISUAL CURE DURING THE LANDING.
Accident investigation:
 |
|
Sources:
NTSB ANC90LA045
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 22-Mar-2024 08:21 | ASN Update Bot | Added |
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