ASN Wikibase Occurrence # 384084
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: | Wednesday 23 June 1982 |
| Time: | 09:10 LT |
| Type: |  S.n.i.a.s. SA-330J |
| Owner/operator: | Petroleum Helicopters |
| Registration: | N3601U |
| MSN: | |
| Total airframe hrs: | 2205 hours |
| Engine model: | TURBOMECA IVC |
| Fatalities: | Fatalities: 0 / Occupants: 13 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Hyannis, MA -
 United States of America
|
| Phase: | En route |
| Nature: | Unknown |
| Departure airport: | Hyannis, MA (KHYA) |
| Hyannis, MA (KHYA) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE PILOT REPORTED THAT HE TOOK OFF, AND DURING A CLIMB THROUGH ABOUT 800 FT, HE HEARD A LOUD SNAP AND IMMEDIATELY FELT SEVERE LATERAL VIBRATIONS. HE DECLARED AN EMERGENCY AND LANDED WITHOUT FURTHER INCIDENT. AN INVESTIGATION REVEALED THAT THE INBOARD TRAILING EAR OF THE MAIN ROTOR SLEEVE/SPINDLE ASSEMBLY, PN 330A31-002607, FOR THE BLUE BLADE, HAD FAILED. EVIDENCE OF FATIGUE WAS FOUND OVER MOST OF THE FRACTURE SURFACE AND EVIDENCE OF FRETTING CORROSION WAS FOUND AT THE ORIGIN OF THE FATIGUE. ALSO, AN AREA OF FRETTING CORROSION WAS FOUND ON THE TRAILING SIDE FLANGE OF THE HINGE PIN, ON A SURFACE CLAMPED BY THE TORQUE OF THE HINGE PIN NUT. RECORDS SHOWED THAT THE AEROSPATIALE SERVICE BULLETIN 01.35 HAD BEEN COMPLIED WITH ON 3/30/82, AND THAT THE HINGE PIN HAD BEEN REPLACED ON 4/10/82, ABOUT 100 FLIGHT HOURS BEFORE THE FAILURE. A SPOT CHECK OF THE MAINTENANCE FACILITY REVEALED THAT 2 OUT OF 3 TORQUE WRENCHES WERE OVERDUE A CALIBRATION CHECK. THE THIRD PROVIDED 54 INCH LBS WHEN SET FOR 120.
Probable Cause:
Accident investigation:
 |
|
Sources:
NTSB NYC82FNA17
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 03-Apr-2024 07:30 | 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