Safety trends by operating rule

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

Loading trend charts…

High-signal investigations

Major cases, deep-report coverage, and investigation media across decades of NTSB history.

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

Statistics

Moderator preview for long-term trend segmentation and comparisons.

MCP API Docs

Model Context Protocol setup, tools, and examples with full site integration.

Loading MCP docs…

NTSB Reports for iPhone

Bring investigation work into a native iOS workflow.

Open canonical report links inside the app, keep saved activity synced, and move through media, dockets, findings, and watchlists with native speed.

Free on the App Store iOS 17+ Push alerts

Download on the App Store

Native search, saved reports, search alerts, in-app docket PDFs, inline figures, and media-first report detail.

App Store screenshot showing a report detail page with photos, overview tabs, and a formatted summary. — Report Detail **Open a full case instantly.** Move through overview, summary, media, and structured report detail in one native flow.

App Store screenshot showing the search and browse feed with recent accident reports. — Search + Browse **Find cases with less friction.** Search by tail, operator, airport, or browse recent reports from a native feed.

App Store screenshot showing docket documents inside a report detail view. — Docket Files **Read attachments in-app.** Open PDFs, statements, data files, and supporting records without leaving the case.

App Store screenshot showing the accident media viewer with investigation video. — Photos + Video **Review investigation media natively.** Swipe through extracted images and video in a full-screen viewer built for mobile reading.

App Store screenshot showing inline figures embedded inside a report narrative. — Inline Figures **See report visuals in context.** Embedded charts and figure callouts stay inside the narrative instead of feeling bolted on.

Alerts

Manage watched reports, watched searches, and notification preferences for your account.

Loading alerts…

Admin Console

Operational visibility for users, API health, and database statistics.

Loading admin tools…

NTSB Report

June 9, 1984 · Beech 99 · N320BA

Chicago, IL

Overview

Report Status

Preliminary report

Event Type

Incident

Date

June 9, 1984

Injury Outcomes

1 injury (1 minor injury), 10 uninjured

Location

Chicago, IL

Aircraft

Beech 99

Tail Number

N320BA

Injuries

Minor

Aircraft Damage

Minor

NTSB Number

CHI84IA224

LANDING GEAR EXTENDED BUT NOT LOCKED. CREW COULD NOT RECTIFY SITUATION BY USING NORMAL AND EMERGENCY GEAR EXTENSION PROCEDURES. GEAR COLLAPSED ON TOUCHDOWN. INVESTIGATION DISCLOSED A FATIGUE CRACK IN RT MAIN GEAR HYDRAULIC ACTUATOR ALLOWING A LOSS OF HYDRAULIC FLUID. MAINTENANCE RECORDS PROVIDED BY THE OPERATOR INDICATE THE ACTUATORS WERE CHECKED FOR LEAKS AND ALIGNMENT 28 HRS PRIOR TO THIS INCIDENT.

Full Narrative

LANDING GEAR EXTENDED BUT NOT LOCKED. CREW COULD NOT RECTIFY SITUATION BY USING NORMAL AND EMERGENCY GEAR EXTENSION PROCEDURES. GEAR COLLAPSED ON TOUCHDOWN. INVESTIGATION DISCLOSED A FATIGUE CRACK IN RT MAIN GEAR HYDRAULIC ACTUATOR ALLOWING A LOSS OF HYDRAULIC FLUID. MAINTENANCE RECORDS PROVIDED BY THE OPERATOR INDICATE THE ACTUATORS WERE CHECKED FOR LEAKS AND ALIGNMENT 28 HRS PRIOR TO THIS INCIDENT.

Flight

Event TypeIncident

Event Time09:26 CDT

Nearest AirportO'Hare (0nm N)

Runway14

Runway Length11600 ft

Runway Width200 ft

Flight Plan FiledIFR

Aircraft FireNo

Aircraft ExplosionNo

Aircraft

AircraftBeech 99

Tail NumberN320BA

Aircraft CategoryAir

DamageMinor

Operating RulePart 135

Engines2

Engine TypeTurboprop

Engine DetailsP&W · PT6A-20 · Turboprop · 550

Seats15

People & Injuries

Injury Summary1 injury (1 minor injury), 10 uninjured

Fatal0

Serious0

Minor1

Uninjured10

Total11

Crew 1Age 41 · First Class

Conditions

ConditionsVMC

LightDaylight

Wind220° @ 5 kt

Visibility4 sm

CeilingBroken clouds 4600 ft

Temperature / Dew Point68 F

Altimeter29.00 inHg

Observation Time14:23

500 – Data service is offline

The modern interface for aviation safety intelligence.

Your saved activity

Saved Reports

Saved Searches

Search everything

Loading…

Safety trends by operating rule

High-signal investigations

Browse the aviation graph

Last Data Update

By Decade

By Month

Aircraft Manufacturer

Airports

Operators

About

Aviation safety reports, made easier to study

FAQs

June 9, 1984 · Beech 99 · N320BA

Overview

Accident Location

NTSB Probable Cause

Full Narrative View original narrative

Key Findings (Experimental AI)

Recent Report Updates

Photos and Videos

Selected image

Flight

Aircraft

People & Injuries

Conditions

Related investigations

NTSB Docket Documents

Document

Additional Resources

See Also

External Links

Appendix: Source Data

Full Narrative