Bell 206L-1 N500CN

Summary

On 22 January 1984 at about 18:30 local time, a Bell 206L-1 registered N500CN was involved in an accident near Huntington, Utah, United States. 7 people were on board and 4 were seriously injured, one had minor injuries. The aircraft was substantially damaged. No probable cause statement is available for this record.

Date

22 January 1984 at 18:30

Classification

Accident

Location

Huntington, Utah, United States

Coordinates

39.4103, -110.9992

Aircraft

Bell 206L-1

Registration

N500CN

Category

Helicopter

Engines

1

Operator

Not recorded

Operating rule

Part 91: General Aviation

Purpose of flight

Business

Phase of flight

Not recorded

Route

Huntington → Unknown

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

DEN84FA073

4 people were seriously injured.

The NTSB has not published a probable cause for this record. No probable cause statement is present in the source data.

Nothing about the cause is stated here that is not in the source record.

Read the full NTSB narrative

WHILE IN A STABILIZED, OUT-OF-GROUND-EFFECT HOVER, AT ABOUT 300 FEET AGL, THE HELICOPTER STARTED AN UNCONTROLLABLE RIGHT TURN. THE PLT STATED THAT USING FULL LEFT PEDDLE HAD NO EFFECT ON STOPPING THE SPIN. AT THE ONSET OF THE SPIN, THE OCCUPANTS OF THE ACFT FELT A HIGH FREQUENCY VIBRATION. THE PLT STATED THAT HE REDUCED THE ROTOR RPM BY ROLLING OFF THE THROTTLE & LOWERED THE COLLECTIVE. THE HELICOPTER DESCENDED INTO TREES IN A RIGHT SPIN. THE PLT STATED THAT HE DID NOT BELIEVE THAT THERE WAS ANYTHING MECHANICALLY WRONG WITH THE ACFT. THE COPLT STATED THAT HE FELT THAT THEY HAD EXPERIENCED A LOSS OF TAILROTOR AUTHORITY. INVESTIGATION REVEALED NO MECHANICAL PROBLEMS WITH THE HELICOPTER. REVIEW OF HEIGHT-VELOCITY CHART FOR THE BELL 206L-1 INDICATED THAT A SUCCESSUL AUTO-ROTATION FROM HOVER A 300 FEET AGL IS NOT PROBABLE. THE ELEVATION OF THE CRASH SITE WAS APRX 6800 FT MSL.

Quoted verbatim from the NTSB record.