Overall Trends
Total, fatal, and serious accidents in the selected range.
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
Search everything
Fast key and full-text search with live filters, watches, and precise metadata.
Use quotes for exact phrase matches (for example "fuel selector valve").
Featured 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…
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 manufacturersAirports
More airportsOperators
More operatorsAbout
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
December 2, 1991 · Swearingen SA-227-AC · N26932
Missoula, MT
Overview
Report Status
Probable Cause
Event Type
Accident
Date
December 2, 1991
Injury Outcomes
No injuries (18 uninjured)
Location
Missoula, MT
Aircraft
Swearingen SA-227-AC
Tail Number
N26932
Operator
Horizon Air
Injuries
None
Aircraft Damage
Substantial
NTSB Number
SEA92LA025
THE PILOT WAS UNABLE TO MAINTAIN DIRECTIONAL CONTROL AS THE AIRCRAFT DRIFTED OFF THE LEFT SIDE OF THE DEPARTURE RUNWAY, WHICH HAD AN ACCUMULATION OF SNOW. THE INABILITY TO MAINTAIN DIRECTIONAL CONTROL AT HIGH SPEED WAS CONSISTENT WITH AA DRAGGING BRAKE ON THE LEFT SIDE OF THE AIRCRAFT.
NTSB Probable Cause
THE PILOT'S INABILITY TO MAINTAIN DIRECTIONAL CONTROL DURING TAKEOFF. FACTORS INCLUDE A DRAGGING BRAKE.
Full Narrative
THE PILOT WAS UNABLE TO MAINTAIN DIRECTIONAL CONTROL AS THE AIRCRAFT DRIFTED OFF THE LEFT SIDE OF THE DEPARTURE RUNWAY, WHICH HAD AN ACCUMULATION OF SNOW. THE INABILITY TO MAINTAIN DIRECTIONAL CONTROL AT HIGH SPEED WAS CONSISTENT WITH AA DRAGGING BRAKE ON THE LEFT SIDE OF THE AIRCRAFT.
Flight
Event TypeAccident
Event Time18:55 MST
Nearest AirportJohnson-Bell (0nm)
Runway29
Runway Length9499 ft
Runway Width150 ft
Flight Plan FiledIFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftSwearingen SA-227-AC
Tail NumberN26932
Aircraft CategoryAir
DamageSubstantial
OperatorHorizon Air
Operating RulePart 135
Engines2
Engine TypeTurboprop
Engine DetailsGarrett · TPE 331-11U · Turboprop · 1050
Seats21
People & Injuries
Injury SummaryNo injuries (18 uninjured)
Fatal0
Serious0
Minor0
Uninjured18
Total18
Crew 1Age 31 · First Class
Conditions
ConditionsIMC
LightDark Night
Wind220° @ 5 kt
Visibility1 sm
Ceiling800 ft
Temperature / Dew Point27 C / 25 C
Altimeter29.00 inHg
Weather SourceWIT