ASN Wikibase Occurrence # 383529
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| Date: | Saturday 21 August 1982 |
| Time: | 09:25 LT |
| Type: |  Bell 206L-1 |
| Owner/operator: | Emar Associates |
| Registration: | N57480 |
| MSN: | 45501 |
| Total airframe hrs: | 746 hours |
| Engine model: | Allison 250C28B |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Ho Ho Kus, NJ -
 United States of America
|
| Phase: | En route |
| Nature: | Executive |
| Departure airport: | Moonachie, NJ |
| Moonachie, NJ | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
WHILE IN STRAIGHT AND LEVEL FLIGHT AT 1000 FT, THE PILOT HEARD A "POP" IN THE ENGINE AREA. HE NOTED THAT THE TURBINE OUTLET TEMPERATURE (TOT) BEGAN AN IMMEDIATE RISE TO THE HIGH YELLOW AREA INITIALLY, THE POWER WAS REDUCED TO 50% TORQUE AND THE TOT RETURNED TO THE GREEN ARC. THE PILOT STARTED TO DIVERT, BUT AFTER ABOUT 20 TO 30 SEC, THE TOT BEGAN RISING AGAIN, SO THE TORQUE WAS REDUCED TO 30%. THE HELICOPTER WAS OVER AN AREA OF TREES, BUT THE PILOT SAW A CULDESAC. AS HE WAS APPROACHING TO LAND, THE TOT BECAME UNCONTROLLABLE AND THE ENGINE WAS SHUT DOWN. AN AUTOROTATION WAS COMPLETED IN A TAIL LOW ATTITUDE TO PREVENT A GROUND RUN. DURING TOUCHDOWN, THE TAILBOOM WAS SEVERED AFT OF THE HORIZONTAL STABILIZER. DISASSEMBLY OF THE ENGINE REVEALED THAT THE SECOND STAGE TURBINE NOZZLE, PN 6893952, HAD SEPARATED FROM THE VANE PORTION OF THE NOZZLE.
Probable Cause:
Accident investigation:
 |
|
Sources:
NTSB NYC82DA206
History of this aircraft
Other occurrences involving this aircraft
| 19 April 2019 | YV2411 | Aeroservicios 84 | 0 | Parque Nacional Canaima, Bolívar |  |
sub |
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 03-Apr-2024 01:37 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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