ASN Wikibase Occurrence # 365614
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| Date: | Saturday 9 March 1991 |
| Time: | 17:30 LT |
| Type: |  Bell 47G-5A |
| Owner/operator: | Ag-air, Inc. |
| Registration: | N59403 |
| MSN: | 25140 |
| Year of manufacture: | 1973 |
| Engine model: | LYCOMING VO-435-81A |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Farmington, CA -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Agricultural |
| Departure airport: | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE ENGINE POWER REDUCED DURING A PROCEDURE TURNAROUND AS THE AIRCRAFT WAS DISPENSING LIQUID FERTILIZER. THE HELICOPTER SETTLED INTO SOFT TERRAIN AND THE MAIN ROTOR BLADE SEVERED THE TAIL BOOM. THE HELICOPTER THEN IMPACTED THE GROUND. EXAMINATION OF THE ENGINE'S AIR FILTER DISCLOSED EVIDENCE OF LIQUID FERTILIZER CLOGGING THE FILTER.
Probable Cause: THE CONTAMINATION OF THE ENGINE INDUCTION AIR FILTER. SOFT TERRAIN DURING THE TOUCHDOWN WAS A FACTOR IN THE ACCIDENT.
Accident investigation:
 |
|
Sources:
NTSB LAX91LA128
History of this aircraft
Other occurrences involving this aircraft
| 18 May 2005 | N59403 | Joel Marwitz | 0 | Brush, Colorado | |
sub |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 20-Mar-2024 12:01 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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