Premium research interface

The modern interface for aviation safety intelligence.

Search investigations, review source evidence, monitor watched reports, and trace long-term patterns from one calm, data-first workspace.

63k+
Reports indexed
1940-2026
Coverage
Recent
Last data refresh
Featured Report

Loading…

Loading featured report…

Loading…
Open Report

Safety trends by operating rule

Track fatal and non-fatal accident patterns across Part 91, Part 135, and Part 121 operations.

Loading trend charts…

Browse the aviation graph

Move quickly by aircraft, airport, operator, and time with indexes built for research, not wandering.

Last Data Update

By Decade

By Month

Aircraft Manufacturer

More manufacturers

Airports

More airports

Operators

More operators

About

Aviation safety reports, made easier to study

NTSB Reports is an independent research and search tool for public aviation accident and incident records. It brings NTSB aviation reports, structured fields, docket files, extracted figures, photos, videos, and update history into one searchable interface.

The goal is practical safety education: make it faster to find relevant investigations, compare similar events, review factual records, and understand the evidence behind probable-cause and preliminary reports.

The investigative work and source records belong to the National Transportation Safety Board and the published investigation record. This site is not affiliated with or endorsed by the NTSB.

FAQs

NTSB Report

June 26, 1991 · Bell 47G-3B1 · N7859S

Goldendale, WA

Overview

Report Status
Probable Cause
Event Type
Accident
Date
June 26, 1991
Injury Outcomes
2 injuries (1 fatality, 1 serious injury)
Location
Goldendale, WA
Aircraft
Bell 47G-3B1
Tail Number
N7859S
Operator
Western Helicopter Services
Injuries
Fatal
Aircraft Damage
Substantial
NTSB Number
SEA91FA142

THE PILOT OF THE TURBINE-POWERED BELL 47G-3B1 WAS APPROACHING THE REMOTE LANDING ZONE WHEN THE HELICOPTER PITCHED DOWN AND TURNED LEFT. THE PILOT CALLED MAYDAY BEFORE THE HELICOPTER STRUCK TREES. LESS THAN TWO GALLONS OF FUEL WAS DRAINED FROM THE FUEL SYSTEM DURING THE INVESTIGATION.

NTSB Probable Cause

THE PILOT'S MISJUDGEMENT OF FUEL SUPPLY.

Full Narrative

THE PILOT OF THE TURBINE-POWERED BELL 47G-3B1 WAS APPROACHING THE REMOTE LANDING ZONE WHEN THE HELICOPTER PITCHED DOWN AND TURNED LEFT. THE PILOT CALLED MAYDAY BEFORE THE HELICOPTER STRUCK TREES. LESS THAN TWO GALLONS OF FUEL WAS DRAINED FROM THE FUEL SYSTEM DURING THE INVESTIGATION.

Flight

Event TypeAccident
Event Time05:28 PDT
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftBell 47G-3B1
Tail NumberN7859S
Aircraft CategoryHeli
DamageSubstantial
OperatorWestern Helicopter Services
Operating RulePart 91
Engines1
Engine TypeTurboshaft
Engine DetailsAllison · 250-C20B · Turboshaft · 420
Seats3

People & Injuries

Injury Summary2 injuries (1 fatality, 1 serious injury)
Fatal1
Serious1
Minor0
Uninjured0
Total2
Crew 1Age 43 · Second Class

Conditions

ConditionsVMC
LightDawn
Wind310° @ 5 kt
Visibility50 sm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter0
Weather SourcePILO

Appendix: Source Data