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

July 30, 1990 · Bell 47G-5 · N8140J

Hudson, IA

Overview

Report Status
Probable Cause
Event Type
Accident
Date
July 30, 1990
Injury Outcomes
No injuries (1 uninjured)
Location
Hudson, IA
Aircraft
Bell 47G-5
Tail Number
N8140J
Injuries
None
Aircraft Damage
Substantial
NTSB Number
CHI90LA205

HAVING COMPLETED AN AERIAL APPLICATION OPERATION, THE COMMERCIAL PILOT SAID THAT HE ATTEMPTED TO LAND ON A FARM FIELD TO CHECK CROP CONDITIONS. HE SAID THAT HE LANDED HARD, HEELS OF THE SKIDS FIRST, RESULTING IN THE MAIN ROTOR FLEXING DOWN AND CONTACTING THE TAIL BOOM AND TAIL ROTOR, CAUSING SUBSTANTIAL DAMAGE.

NTSB Probable Cause

IMPROPER TOUCHDOWN PERFORMED BY THE PILOT IN COMMAND.

Full Narrative

HAVING COMPLETED AN AERIAL APPLICATION OPERATION, THE COMMERCIAL PILOT SAID THAT HE ATTEMPTED TO LAND ON A FARM FIELD TO CHECK CROP CONDITIONS. HE SAID THAT HE LANDED HARD, HEELS OF THE SKIDS FIRST, RESULTING IN THE MAIN ROTOR FLEXING DOWN AND CONTACTING THE TAIL BOOM AND TAIL ROTOR, CAUSING SUBSTANTIAL DAMAGE.

Flight

Event TypeAccident
Event Time10:00 CDT
Nearest Airport0nm N
Runway0
Runway Length0
Runway Width0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftBell 47G-5
Tail NumberN8140J
Aircraft CategoryHeli
DamageSubstantial
Operating RulePart 137
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · VO-435-B1A · Reciprocating · 260
Seats3

People & Injuries

Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 29 · Second Class

Conditions

ConditionsVMC
LightDaylight
Wind300° @ 6 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter0
Weather SourcePILO

Appendix: Source Data