ASN Wikibase Occurrence # 133240
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| Date: | Friday 3 July 1992 |
| Time: | 22:14 LT |
| Type: |  Bell 47G-5 |
| Owner/operator: | Red Mountain Helicopters, Inc. |
| Registration: | N4798R |
| MSN: | 7925 |
| Year of manufacture: | 1968 |
| Engine model: | Lycoming VO-435-B1A |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Mesa, AZ -
 United States of America
|
| Phase: | Taxi |
| Nature: | Agricultural |
| Departure airport: | (NONE) |
| (NONE) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
ACCORDING TO A WITNESS, THE PILOT WAS PERFORMING A TAKEOFF AFTER THE HELICOPTER HAD BEEN LOADED WITH ABOUT 60 GALLONS OF INSECTICIDE. THE HELICOPTER ATTAINED AN ALTITUDE OF ABOUT 50 TO 60 FEET ABOVE THE GROUND WHEN THE WITNESS OBSERVED THE TAIL ROTOR MOVE LATERALLY ABOUT 4 TO 5 FEET. THE WITNESS SAID HE SAW THE AIRCRAFT SETTLE TO THE GROUND AND LAND HARD. HE SAID HE IMMEDIATELY ASKED THE PILOT WHAT HAPPENED. THE PILOT REPORTEDLY TOLD THE WITNESS THAT HE HAD A 'POWER DROOP.' THE CAUSE OF THE PARTIAL LOSS OF POWER WAS NOT DETERMINED.
Probable Cause: A PARTIAL LOSS OF ENGINE POWER DUE TO UNKNOWN REASON (S). FACTORS IN THIS ACCIDENT WERE 1) LOW ALTITUDE WHEN THE PARTIAL LOSS OF POWER OCCURRED 2) LOW ROTOR RPM AS A RESULT OF THE LOSS OF POWER, AND 3) THE PILOT NOT BEING ABLE TO TAKE REMEDIAL ACTION DUE TO THE LOW ALTITUDE AND ROTOR RPM.
Accident investigation:
 |
|
Sources:
NTSB LAX92LA278
History of this aircraft
Other occurrences involving this aircraft
| 1 November 1989 | N4798R | Mark & Tracy English | 0 | Guadalupe, CA | |
sub |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 21-Dec-2016 19:25 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 10-Apr-2024 19:48 | ASN Update Bot | Updated [Time, Other fatalities, Phase, Departure airport, Destination airport, Source, Narrative, Category, Accident report] |
Corrections or additions? ... Edit this accident description
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