LAX92FA388

NTSB accident investigation · Aerospatiale AS-350B · Hana, HI · September 16, 1992

Accident · FatalField investigationFinal report
Date
September 16, 1992, 11:00 local (21:00 UTC)
Place
Hana, HI
Injuries
7 fatal
Damage
Destroyed
Phase of flight
Enroute
Aircraft
N350SMAerospatiale AS-350B
Weather
Instrument (IMC) · Day
Status
Completed · report August 26, 1993
Report
Approved by Office Director
FAA report
19920916036979A
Case key
27452

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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Probable cause

The pilot inadequately evaluating the enroute weather conditions, and the pilot making the inflight decision to continue VFR flight into adverse weather conditions. Factors in this accident were the inability of the pilot to see and avoid the mountainous terrain due to the thunderstorms and obscuration.

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 collision with terrain/waterCruise
Weather condition - thunderstormFactor
Weather condition - obscurationFactor
Weather evaluation - inadequatePilot in commandCause
In-flight planning/decision - poorPilot in commandCause
Vfr flight into imc - attemptedPilot in commandCause
Terrain condition - mountainous/hilly

Analysis

The intended 45 minute sight seeing helicopter flight departed the airport at about 1032 hours. Adverse weather conditions including thunderstorms, rain showers, and poor visibility were reported in the vicinity of the accident site throughout the morning. The accident aircraft pilot had a radio conversation with another sight seeing tour pilot between 1055 hours and about 1100 hours. This pilot contacted the accident aircraft pilot to try to determine which route she should take to avoid the adverse weather. She reported the accident pilot's last conversation with her as 'don't come down this way, the weather is getting real bad.' A witness located on the ground in the vicinity of the accident reported rain showers and mountain obscuration at about the time of the accident. He further stated that he saw a blue and white helicopter flying in and out of the clouds and he could not understand why a helicopter would be flying so close to the mountains in consideration of the adverse weather. Examination of the wreckage showed the helicopter impacted a 30 degree slope in a level 15 degree right bank. Wreckage and debris were scattered over a distance of about 175 feet from the initial impact location.

Aircraft

Registration
N350SM
Reported as
Aerospatiale AS-350B
Category
Helicopter
Serial number
1488
Airframe hours
7,428
Engine
Turbomeca ARRIEL 1B, 640 horsepower, turbo shaft
Damage
Destroyed
Fire
On-Ground
Flight
Part 135
Operator
Hawaii Hellicopters, Inc.
Registered owner
Hawaii Hellicopters, Inc.
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · August 18, 1992 · 22 hours before
Departed
OGG · Kahului, HI
Destination
OGG
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
44
Certificate
Commercial
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Right
Toxicology
Performed
Flight hours
7,021 total · 1,620 in this make and model · 6,721 as pilot in command · 240 in the last 90 days · 89 in the last 30 days · 9 in the last 24 hours

Weather

Conditions
Instrument (IMC) · Day
Lowest ceiling
50 ft overcast
Temperature
84 °F

FAA reports on this event · 1

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