ASN Wikibase Occurrence # 42625
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| Date: | Thursday 19 March 1987 |
| Time: | 16:00 |
| Type: |  Bell 47G |
| Owner/operator: | private |
| Registration: | N13766 |
| MSN: | 1228 |
| Year of manufacture: | 1958 |
| Total airframe hrs: | 4395 hours |
| Engine model: | FRANKLIN 6V335-A |
| Fatalities: | Fatalities: 2 / Occupants: 2 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Wassaic, NY -
 United States of America
|
| Phase: | En route |
| Nature: | Survey |
| Departure airport: | Northampton, MA (7B2) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE BELL 47G HELICOPTER WAS ON A AERIAL SURVEY OF BURIED TELEPHONE CABLE WHEN THE RED MAIN ROTOR BLADE SEPARATED FROM THE BLADE GRIPS IN FLIGHT. THE MAIN ROTOR HUB WITH THE MAIN ROTOR BLADE SEPARATED FROM THE TRANSMISSION AND THE HELICOPTER CRASHED. NO EVIDENCE WAS FOUND TO INDICATE THAT THIS ACCIDENT INVOLVED A BLADE STRIKE. EXAMINATION OF THE FAILED MAIN ROTOR BLADE DISCLOSED THAT THE BLADE HAD RECEIVED A BLADE STRIKE SOME YEARS BEFORE, WAS REPAIRED AND RETURNED TO SERVICE. THERE WAS A LARGE GAP NEAR THE BLADE GRIPS THAT HAD BEEN FILLED WITH EPOXY. BOTH OF THESE REPAIRS WERE DETERMINED TO NOT BE IN COMPLIANCE WITH THE BELL 47 MAINTENANCE AND OVERHAUL MANUAL. CAUSE:
Sources:
NTSB: http://www.ntsb.gov/ntsb/brief.asp?ev_id=20001213X30536
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 21-Dec-2016 19:24 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
Corrections or additions? ... Edit this accident description
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