ASN Wikibase Occurrence # 383969
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 4 July 1982 |
| Time: | 22:35 LT |
| Type: |  Aerospatiale SA 316B |
| Owner/operator: | Rocky Mt Helicopter Inc |
| Registration: | N8259 |
| MSN: | 1771 |
| Total airframe hrs: | 4551 hours |
| Engine model: | TURBOMECA |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Crafton, PA -
 United States of America
|
| Phase: | En route |
| Nature: | Unknown |
| Departure airport: | Crafton, PA |
| Crafton, PA | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
SHORTLY AFTER TAKEOFF THE PILOT HEARD A LOUD GRINDING NOISE AND FELT A VIBRATION EMANATING FROM THE REAR OF THE AIRCRAFT. IMMEDIATELY, THE NOSE YAWED TO THE LEFT AND THE ENGINE FAILED. THE PILOT ENTERED AUTORATION AND MADE A HARD LANDING. EXAMINATION OF THE ENGINE REVEALED THAT THE AFT BEARING SUPPORT HAD TWO BOLTS MISSING AND THE THIRD BOLT WAS SHEARED BUT STILL IN THE MOUNT HOLE. THIS ALLOWED THE AFT TURBINE SECTION TO COME IN CONTACT WITH THE TURBINE HOUSING. EXAMINATION OF THE FIRST STAGE AXIAL COMPRESSOR REVEALED BLADE NUMBER 4 TO HAVE A PIECE MISSING FROM THE ROOT SECTION. FOREIGN OBJECT DAMAGE WAS EVIDENT ON OTHER BLADES EXAMINED.
Probable Cause:
Accident investigation:
 |
|
Sources:
NTSB NYC82FGM12
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 03-Apr-2024 06:20 | 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