ASN Wikibase Occurrence # 297002
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| Date: | Sunday 7 July 2002 |
| Time: | 10:45 LT |
| Type: |  Bell 47G-2 |
| Owner/operator: | John Ochwatt |
| Registration: | N2483B |
| MSN: | 1459 |
| Year of manufacture: | 1956 |
| Engine model: | Lycoming VO-435-AIF |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Compton, California -
 United States of America
|
| Phase: | Unknown |
| Nature: | Private |
| Departure airport: | Compton Airport, CA (CPM/KCPM) |
| Compton Airport, CA (CPM/KCPM) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The helicopter experienced a partial loss of engine power during cruise flight, and collided with power lines during a precautionary landing. The pilot felt a severe vibration and noted a drop in the helicopter's rotor rpm. As the vibrations continued, he manipulated the flight controls in an effort to maintain a controlled descent and began an autorotation. While searching for a suitable landing area, about 200 feet agl, he noticed that power lines were in the helicopter's path. He maneuvered the helicopter in a unsuccessful effort to avoid the power lines, and landed hard in a dirt field. A mechanic with inspection authorization (IA), who regularly worked on the helicopter, conducted an examination after the accident. He stated that a fan belt used in the integral system for cooling the engine had either broken or come loose. As a result, the belt wrapped around the pulley, which caused the transmission to drag. He noted that the engine ran fine after the accident, and the fuel system was free of particulates and contaminates. He said that he completed the annual inspection for the helicopter about 14 hours prior to the accident, at which time he believed that he examined the belts. He further stated the helicopter was stored outside, in a corrosive environment.
Probable Cause: the failure and separation of a fan belt for the engine cooling system. A factor in the accident was the inadequate annual inspection 14 hours prior to the accident.
Accident investigation:
 |
|
Sources:
NTSB LAX02LA218
History of this aircraft
Other occurrences involving this aircraft
| 13 March 1965 | N2483B | 0 | near Wenatchee WA | |
w/o | |
| 3 October 1997 | N2483B | Private | 0 | Burbank, CA | |
sub |
| 18 September 2017 | TI-BGH | Heli Green of Costa Rica | 1 | Llano Bonito, Cariari district, Pococí de Limón |  |
w/o |
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 14-Oct-2022 13:16 | ASN Update Bot | Added |
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