DEN86LA082

NTSB accident investigation · Aerospatiale SA315B · Meeker, CO · February 20, 1986

Accident · Minor injuriesLimited investigationFinal report
Date
February 20, 1986, 09:30 local (16:30 UTC)
Place
Meeker, CO
Injuries
2 minor
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N27387Aerospatiale SA315B
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19860220004799A
Case key
16923

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

On this page

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.

Roll overHover
Terrain condition - snow covered
Terrain condition - hidden obstruction(s)
Visual lookout - inadequatePilot in commandCause

Analysis

During the lift off the right skid toe of the helicopter caught a seismic cable which was covered by aprx 2 ft of snow. The plt stated he brought the acft to a hover after off loading 2 pax & started a right sideward hover. When the slack was out of the seismic cable, the helicopter rolled right, past the critical roll angle & encountered dynamic rollover. The main rotor blades contacted the ground as a result of the dynamic rollover.

Aircraft

Registration
N27387
Reported as
Aerospatiale SA315B
Category
Helicopter
Serial number
2625
Airframe hours
2,373
Engine
Turbomeca ARTOUSTE IIIB, 562 lbs thrust, turbo shaft
Damage
Substantial damage
Flight
Part 135
Operator
Colorado Airlift, Inc.
Registered owner
Darrell J. Diderickses
Airworthiness certificate
Standard, Utility
Last inspection
100 hour · June 1, 1985 · 42 hours before
Departed
CAG · Craig, CO
Flight plan
Company VFR

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
30
Certificate
Commercial
Instrument ratings
Helicopter
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Right
Flight hours
4,114 total · 300 in this make and model · 3,828 as pilot in command · 150 in the last 90 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
270° at 5 knots
Visibility
15 statute miles
Lowest ceiling
None
Temperature
32 °F
Altimeter
29.00 inHg

FAA reports on this event · 1

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

Other investigations on N27387 · 1

Matched to the same aircraft by N-number and date.