CHI86FA046

NTSB accident investigation · Aerospatiale SA365N · Adrian, MI · December 10, 1985

Accident · FatalField investigationFinal report
Date
December 10, 1985, 04:11 local (09:11 UTC)
Place
Adrian, MI
Injuries
2 fatal, 1 serious
Damage
Destroyed
Phase of flight
Enroute
Aircraft
N5800HAerospatiale SA365N
Weather
Instrument (IMC) · Night/dark
Status
Completed
Report
Approved by Office Director
FAA report
19851210076269A
Case key
13238

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.

In flight encounter with weatherCruise - normal
Weather condition - fogFactor
Flight into known adverse weather - performedPilot in commandFactor
Light condition - dark nightFactor
Vfr flight into imc - inadvertentPilot in commandCause
In flight collision with objectManeuvering
Object - tree(s)Factor
Visual lookout - reducedPilot in commandCause
In flight collision with terrain/waterDescent - uncontrolled

Analysis

The purpose of this flight was to pick up an injured patient and return him to a medical center. The weather was adequate for a VFR takeoff. However, enroute weather reports indicated fog and probable low ceilings. According to the single survivor of the accident, the pilot flew into 'thick fog' shortly before reaching their destination for the patient pickup. Again according to the survivor, the pilot then turned to the left. Shortly thereafter, the helicopter struck trees and crashed to the ground. An examination of the wreckage and teardowns of both engines revealed no pre- crash mechanical malfunctions.

Aircraft

Registration
N5800H
Reported as
Aerospatiale SA365N
Category
Helicopter
Serial number
6022
Airframe hours
1,241
Engine
Turbomeca ARRIEL1C, 660 horsepower, turbo shaft
Damage
Destroyed
Flight
Business · Part 91
Registered owner
Clinton Aviation Group
Airworthiness certificate
Standard, Normal
Last inspection
AAIP · October 5, 1985 · 92 hours before
Departed
RLA · Toledo, OH
Destination
RLA · Addison, MI

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
49
Certificates
Flight instructor, Airline transport
Instrument ratings
Helicopter
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Right
Toxicology
Performed
Flight hours
8,500 total · 150 in the last 90 days · 50 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Instrument (IMC) · Night/dark
Wind
Calm
Lowest ceiling
200 ft
Temperature
30 °F

FAA reports on this event · 1

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