LAX83FA179

NTSB accident investigation · Bell 206L-1 · Red Rock, AZ · April 4, 1983

Accident · No injuriesField investigationFinal report
Date
April 4, 1983, 15:30 local (22:30 UTC)
Place
Red Rock, AZ
Injuries
6 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N302PSBell 206L-1
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19830404011119A
Case key
23443

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of control - in flightApproach - vfr pattern - final approach
Reason for occurrence undeterminedCause
Weather condition - high density altitude
Terrain condition - mountainous/hilly
In flight collision with objectApproach
Object - tree(s)Factor
Roll overLanding

Analysis

Reportedly, the plt elected to land in a mountainous area in calm wind conditions. At an estimated distance of 350 ft & an alt of aprx 75 ft above the touchdown zone, the nose of the helicopter began a gradual left turn as the plt applied collective pitch. At about the same time, he noted that the turbine outlet temp (tot) was rising & the main rotor RPM was decaying. There was a deep gorge ahead, so he made a left cyclic turn & lowered the collective in an attempt to reach a clearing. As he attempted to stabilize the helicopter, it started to rotate to the right & the rotor low RPM warning light came on. Subsequently, the helicopter settled into a juniper tree & rolled over onto its side. The air temp & elevation of the crash site were 24 deg fahrenheit & 7150 ft, respectively. A functional test of the eng revealed that it would operate within its limits. The control continuity could not be estimated due to separation of the tail boom push-pull tube. Reportedly, the main rotor & eng RPM needles had remained joined.

Aircraft

Registration
N302PS
Reported as
Bell 206L-1
Category
Helicopter
Serial number
45731
Airframe hours
672
Engine
Allison 250-C28B, 500 horsepower, turbo shaft
Damage
Substantial damage
Flight
Aerial observation · Part 91
Registered owner
Arizona Public Service
Last inspection
Annual · February 27, 1983 · 68 hours before
Departed
Farmington, NM

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
36
Certificates
Flight instructor, Airline transport
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Helicopter, Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Right
Flight hours
7,836 total · 662 in this make and model · 7,119 as pilot in command · 110 in the last 90 days · 10 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
30 statute miles
Lowest ceiling
None
Temperature
25 °F

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.