ASN Wikibase Occurrence # 370547
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: | Friday 25 August 2000 |
| Time: | 15:30 LT |
| Type: |  Hughes 369E |
| Owner/operator: | Silverhawk Aviation |
| Registration: | N570CA |
| MSN: | 182E |
| Total airframe hrs: | 5200 hours |
| Engine model: | Allison 250-C20B |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | COOLIN, ID -
 United States of America
|
| Phase: | Initial climb |
| Nature: | Unknown |
| Departure airport: | (66S) |
| NORDMAN, ID (67S) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
Shortly after takeoff, the engine lost power. The pilot initiated an emergency running landing, which resulted in the main rotor blades contacting and subsequently severing the tail boom during the landing phase. The engine and associated components were inspected. The turbine outlet temperature (TOT) indicating system was inspected to verify calibration, which is to be calibrated inspected during all 300-hour inspections. The test revealed that the TOT indicated on the cockpit gage was below actual engine outlet temperatures, and that lower than actual TOT readings provided to the pilot via the cockpit TOT gage may have resulted in numerous operations being conducted in higher temperature ranges than that authorized by the Pilot's Flight Manual and/or the engine manufacturers temperature limitations. The engine teardown inspection confirmed that the failures and stress ruptures found throughout the engine turbine assembly components were a result of high temperature engine operation above 2000F.
Probable Cause: The turbine outlet temperature indicating system was out of calibration. Factors included improper maintenance calibration, which resulted in the over temperature of the turbine assembly.
Accident investigation:
 |
|
Sources:
NTSB SEA00LA170
History of this aircraft
Other occurrences involving this aircraft
| 17 May 1988 | N5258C | W I D Industries, Inc. | 0 | Chemult, OR | |
sub |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 25-Mar-2024 11:52 | 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