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
June 26, 1990 · Hiller 12-E · N62397
Watson, MN
Overview
Report Status
Probable Cause
Event Type
Accident
Date
June 26, 1990
Injury Outcomes
No injuries (1 uninjured)
Location
Watson, MN
Aircraft
Hiller 12-E
Tail Number
N62397
Injuries
None
Aircraft Damage
Substantial
NTSB Number
MKC90LA138
THE COMMERCIAL HELICOPTER PILOT SAID THAT HE HAD JUST STARTED AN AERIAL APPLICATION OPERATION, AND AFTER CLEARING THE WIRES AND TREES DESCENDED INTO THE FIELD TO BE SPRAYED. THE ACFT FAILED TO ROUND OUT, STRUCK THE TERRAIN, BOUNCED, HIT THE GROUND AGAIN, THEN COLLIDED WITH TREES, GOING BACKWARDS. THE AIR TEMPERATURE WAS 87 DEGREES, AND THE AIRCRAFT HAD JUST BEEN LOADED.
NTSB Probable Cause
PILOT MISJUDGED HIS FLARE AND COLLIDED WITH THE TERRAIN.
Full Narrative
THE COMMERCIAL HELICOPTER PILOT SAID THAT HE HAD JUST STARTED AN AERIAL APPLICATION OPERATION, AND AFTER CLEARING THE WIRES AND TREES DESCENDED INTO THE FIELD TO BE SPRAYED. THE ACFT FAILED TO ROUND OUT, STRUCK THE TERRAIN, BOUNCED, HIT THE GROUND AGAIN, THEN COLLIDED WITH TREES, GOING BACKWARDS. THE AIR TEMPERATURE WAS 87 DEGREES, AND THE AIRCRAFT HAD JUST BEEN LOADED.
Flight
Event TypeAccident
Event Time19:00 CDT
Nearest Airport0nm N
Runway0
Runway Length0
Runway Width0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftHiller 12-E
Tail NumberN62397
Aircraft CategoryHeli
DamageSubstantial
Operating RulePart 137
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · VO-540-C2A · Reciprocating · 305
Seats1
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 36 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind190° @ 5 kt
Visibility10 sm
CeilingBroken clouds 5000 ft
Temperature / Dew Point0 C
Altimeter0
Observation Time19:00
Weather SourcePILO