ASN Wikibase Occurrence # 33359
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| Date: | Saturday 22 August 1998 |
| Time: | 16:30 |
| Type: |  Aérospatiale SA 315B Lama |
| Owner/operator: | Geo-Seis Helicopters |
| Registration: | N49525 |
| MSN: | 2492 |
| Year of manufacture: | 1977 |
| Total airframe hrs: | 13026 hours |
| Engine model: | Turbomeca ARTOUSTE IIIB |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | 2.5 miles south of Naturita, Colorado -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | External load operation |
| Departure airport: | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
An Aerospatiale SA315B helicopter, N49525, was substantially damaged when it impacte
While approaching a hover during external load operations carrying a 1,200-pound compressor, the engine lost partial power and the pilot conducted an emergency landing without releasing the load due to proximity of ground personnel. The landing was hard, in trees, and the helicopter sustained substantial damage. The pilot received minor injuries. Examination of the engine provided evidence of overheat in the turbine area and both the stator and turbine
blades were eroded with the turbine blades eroded about 1/3 of their length. The fuel control and fuel pump were tested and operated within normal parameters. No evidence was found to explain the cause of the overheat.
Probable Cause and Findings
Partial loss of engine power resulting from heat induced deterioration of the gas generator turbine. Factors were a forced landing in hilly unsuitable terrain containing mature trees.
Accident investigation:
 |
|
Sources:
NTSB
History of this aircraft
Other occurrences involving this aircraft
| 28 March 2002 | N49525 | Roberts Aircraft | 0 | Hortense, GA | |
sub |
| Loss of tail-rotor effectiveness (LTE) | ||||||
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 27-Sep-2008 01:00 | ASN archive | Added |
| 06-Oct-2023 10:57 | harro | Updated |
Corrections or additions? ... Edit this accident description
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