LAX95LA063

NTSB accident investigation · McDonnell Douglas 500 · Chuuk Island (Pacific Ocean) · December 29, 1994

Accident · FatalLimited investigationFinal report
Date
December 28, 1994, 15:15 local (Dec 29, 1994, 01:15 UTC)
Place
Chuuk Island (Pacific Ocean)
Injuries
2 fatal
Damage
Destroyed
Phase of flight
Unknown
Aircraft
N9128FMcDonnell Douglas 500
Weather
Visual (VMC) · Day
Status
Completed · report May 4, 1995
Report
Approved by Office Director
FAA report
19941228042959A
Case key
29003

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

On this page

Probable cause

undetermined.

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.

UndeterminedUnknown
Reason for occurrence undeterminedCause

Analysis

The pilot and an observer departed the ship for a fish-spotting mission. When the pilot did not report his position, the ship returned to the last known position and found various debris from the aircraft. There were no distress radio calls from the pilot. The operator reported no known problems with the aircraft prior to the accident. The weather conditions were good visibility with light winds.

Factual narrative

On December 28, 1994, at 1515 local Guam time, a McDonnell-Douglas 500 helicopter, N9128F, with two persons onboard, was reported missing during a local fish-spotting mission southwest of Chuuk Island in the Pacific Ocean (1 degree 25 minutes north; 152 degrees 9 minutes east). Fair weather conditions were reported by the ship's crew. The aircraft was operated by Hoffman Helicopters, Inc., on the island of Guam. According to the operator, the helicopter was being used as a fish spotter for a Taiwanese fishing vessel the "Winfar 636."

The operator reported that the helicopter was 5 minutes from the ship conducting normal operations. When the pilot stopped reporting his position, the ship returned to the last known position to begin a search. The search found some floats and an oil slick, but no helicopter or crew. The ship arrived at the last known location at 1558 and found various debris from the aircraft at 1610. There were no reported distress calls from the crew.

According to the operator, the aircraft and radios were operating normally with no known problems. The pilot was an experienced pilot and held a mechanic's license.

Aircraft

Registration
N9128F
Reported as
McDonnell Douglas 500
Category
Helicopter
Serial number
720398S
Engine
Allison 250-C20B, 375 horsepower, turbo shaft
Damage
Destroyed
Flight
Aerial observation · Part 91
Operator
Hoffman Helicopters, Inc.
Registered owner
Hoffman Helicopters, Inc.
Airworthiness certificate
Standard, Normal
Destination
PO

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
40
Certificate
Airline transport
Airplane ratings
Single-engine land
Instrument ratings
Airplane, Helicopter
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
5,800 total · 5,064 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
0° at 5 knots
Visibility
50 statute miles
Lowest ceiling
None
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.

Other investigations on N9128F · 1

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