ASN Wikibase Occurrence # 359091
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information.
If you feel this information is incomplete or incorrect, you can submit corrected information.
| Date: | Sunday 23 April 1995 |
| Time: | 16:00 LT |
| Type: |  Bell 206L-1 |
| Owner/operator: | Classic Helicopter Service |
| Registration: | N206AH |
| MSN: | 45562 |
| Year of manufacture: | 1980 |
| Total airframe hrs: | 5573 hours |
| Engine model: | Allison250-C30P |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Richfield, UT -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Executive |
| Departure airport: | |
| (KRIF) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PILOT REPORTED THAT THE HELICOPTER HAD BEEN STRANDED ON TOP OF A HILL FOR SEVERAL DAYS DUE TO ADVERSE WEATHER CONDITIONS AND SNOW FALL. BEFORE LEAVING THE HELICOPTER ON THE HILL, THE PILOT STATED THAT HE USED JACKETS AND CUSHIONS TO ATTEMPT TO COVER THE ENGINE INLETS, AS PROTECTIVE COVERINGS WERE NOT AVAILABLE. WHEN THE HELICOPTER WAS RETRIEVED, SNOW HAD ACCUMULATED IN THE INLETS. AFTER THE AIRFRAME AND ENGINE INLETS HAD BEEN CLEANED OF THE SNOW AND ICE BUILD UP, THE ENGINE WAS STARTED AND WARMED BEFORE TAKEOFF. SHORTLY AFTER TAKEOFF, THE ENGINE LOST POWER AND THE PILOT INITIATED AN AUTOROTATION TO SLIGHTLY SLOPING TERRAIN. THE HELICOPTER LANDED HARD. DURING ENGINE INSPECTION, IT WAS FOUND THAT AT LEAST SIX COMPRESSOR BLADES WERE BENT. NO INSPECTION WINDOWS WERE INSTALLED IN THE COWLING, WHICH WOULD HAVE ALLOWED THE PILOT TO VIEW THE PLENUM CHAMBER FOR ICE OR SNOW. POST ACCIDENT INSPECTION OF THE ENGINE DID NOT REVEAL EVIDENCE OF A MECHANICAL FAILURE OR MALFUNCTION.
Probable Cause: ICE INGESTION. FACTORS TO THE ACCIDENT WERE: AIRCRAFT PROTECTIVE COVERINGS WERE UNAVAILABLE, INADEQUATE PREFLIGHT INSPECTION, AND UNEVEN TERRAIN.
Accident investigation:
 |
|
Sources:
NTSB SEA95LA085
History of this aircraft
Other occurrences involving this aircraft
| 27 August 1987 | N22HU | Aris Helicopter Ltd | 0 | Covelo, CA | |
sub |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 15-Mar-2024 06:52 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
The Aviation Safety Network is an exclusive service provided by:
Quick Links:
| ASN Home | Send Correction / Feedback |
| FSF Home | Disclaimer | Copyright |
| Contact Us | Privacy Policy |
| Press / Media |
CONNECT WITH US:
©2024 Flight Safety Foundation