ASN Wikibase Occurrence # 32533
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| Date: | Sunday 9 August 1992 |
| Time: | 14:26 LT |
| Type: |  MBB Bo 105CBS-4 |
| Owner/operator: | Rocky Mountain Helicopters |
| Registration: | N30SV |
| MSN: | 755 |
| Total airframe hrs: | 2000 hours |
| Engine model: | ALLISON 250-C20 |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Lake Madison, SD -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Executive |
| Departure airport: | Sioux Falls, SD |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PILOT REPORTED HE ENTERED A SHALLOW RIGHT TURN ABOUT 200-300' ABOVE LAKE MADISON. HE SUDDENLY REALIZED HE HAD LOST CONSIDERABLE ALTITUDE AND WAS IN A STEEP RIGHT BANK. HE SAID HE ATTEMPTED TO LEVEL THE HELICOPTER AND GAIN ALTITUDE BUT STRUCK THE WATER. HE WAS UNAWARE OF ANY PRE IMPACT MECHANICAL DIFFICULTIES WITH THE HELICOPTER. A POST CRASH INSPECTION DID NOT DISCOVER ANY PREEXISTING MECHANICAL DEFICIENCIES.
Probable Cause: THE PILOT'S INADEQUATE VISUAL LOOKOUT AND INADVERTENT DESCENT.
Accident investigation:
 |
|
Sources:
NTSB CHI92LA233
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 27-Sep-2008 01:00 | ASN archive | Added |
| 17-Feb-2010 02:38 | TB | Updated [Cn, Operator, Other fatalities, Location, Country, Damage, Narrative] |
| 17-Feb-2010 02:38 | TB | Updated [Date, Cn, Operator, Total fatalities, Total occupants, Other fatalities, Location, Country, Source, Damage, Narrative] |
| 08-Aug-2010 15:00 | TB | Updated [Aircraft type, Phase, Nature, Source, Narrative] |
| 26-Oct-2012 11:48 | TB | Updated [Source, Narrative] |
| 11-Oct-2016 17:10 | TB | Updated [Source] |
| 10-Apr-2024 18:48 | ASN Update Bot | Updated [Time, Cn, Other fatalities, Phase, Nature, Departure airport, Source, Damage, Narrative, Category, Accident report] |
Corrections or additions? ... Edit this accident description
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