ATL92FA029

NTSB accident investigation · Aerospatiale AS350D Astar · Fuquay-Varina, NC · December 7, 1991

Accident · FatalField investigationFinal report
Date
December 7, 1991, 00:15 local (05:15 UTC)
Place
Fuquay-Varina, NC
Injuries
3 fatal, 1 serious
Damage
Destroyed
Phase of flight
Enroute
Aircraft
N26FHAerospatiale AS350D Astar
Weather
Visual (VMC) · Night/dark
Status
Completed · report January 27, 1993
Report
Approved by Office Director
FAA report
19911207055069A
Case key
8490

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's improper decision in continuing the flight with a known engine problem, and the subsequent seizure of the number two engine bearing, resulting in engine stoppage. Darkness was a related factor.

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 engine power(total) - mech failure/malfCruise - normal
In-flight planning/decision - improperPilot in commandCause
Operation with known deficiencies in equipment - continuedPilot in commandCause
Engine assembly,bearing - seizedCause
Forced landingDescent - emergency
Autorotation - attemptedPilot in command
In flight collision with terrain/waterDescent - emergency
Light condition - dark nightFactor
Misc eqpt/furnishings,seat belt - failure,total
Maintenance,installation - improperCompany maintenance personnel

Analysis

The news helicopter was returning from a reporting assignment at night in VMC conditions. The sole survivor, a sportscaster, reported that about 20 to 25 minutes before the crash, the engine chip light came on. The light came on and was reset by the pilot 5 to 10 times. There was also a loss of torque on the torque gauge. Subsequently, the engine lost power & the helicopter crash landed in an open field. An inspection of the engine revealed the #2 bearing had seized, resulting in failure of the compressor shaft. The #2 bearing had been replaced during recent engine maintenance, and there was only about 125 hours on the new bearing. The oil jet to the bearing was not blocked or clogged. There were torque fluctuations observed on two occasions during the week before to the accident. Several components were changed in an attempt to pinpoint the problem. The survivor's seat belt failed in the crash due to an improper installation, and he was thrown clear of the wreckage.

Aircraft

Registration
N26FH
Reported as
Aerospatiale AS350D Astar (AS350D AST)
Category
Helicopter
Serial number
1331
Airframe hours
2,716
Engine
Lycoming LTS-101-600A2, 590 horsepower, turbo shaft
Damage
Destroyed
Flight
Other work use · Part 91
Operator
Equipment Leasors Of Pa, Inc.
Registered owner
Equipment Leasors Of Pa, Inc.
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · November 13, 1991 · 23 hours before
Departed
NONE · Wilmington, NC
Destination
NONE · Durham, NC

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
48
Certificate
Airline transport
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Helicopter, Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Right
Toxicology
Performed
Flight hours
7,215 total · 931 in this make and model

Weather

Conditions
Visual (VMC) · Night/dark
Wind
170° at 3 knots
Visibility
12 statute miles
Temperature
39 °F, dew point 30 °F
Altimeter
30.00 inHg
Observed at
RDU, 15 nm away

FAA reports on this event · 1

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