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
September 6, 1990 · Cessna U206 · N2107F
Lewistown, MT
Overview
Report Status
Probable Cause
Event Type
Accident
Date
September 6, 1990
Injury Outcomes
No injuries (1 uninjured)
Location
Lewistown, MT
Aircraft
Cessna U206
Tail Number
N2107F
Operator
Larry C Hoffman
Injuries
None
Aircraft Damage
Substantial
NTSB Number
SEA90LA181
DURING A LOCAL FLIGHT, THE PILOT WAS FLYING AT APRX 800 FT AGL LOOKING FOR A TIRE THAT HAD FALLEN OFF A TRUCK. THE FLIGHT WAS PARALLELING A ROAD WHEN THE PILOT SPOTTED WHAT HE THOUGHT WAS THE TIRE. THE PILOT MADE A LEFT DESCENDING TURN TO GET A CLOSER LOOK WHEN THE AIRPLANE STRUCK A TRANMISSION WIRE. THE PILOT WAS UNAWARE OF THE COLLISION AND PROCEEDED TO ANOTHER LANDING STRIP. IT WAS LATER FOUND THAT THE LEFT WINGS LEADING EDGE WAS DENTED AND A GRASS FIRE HAD IGNITED FROM THE DOWNED WIRE.
NTSB Probable Cause
THE PILOT DID NOT MAINTAIN AN ADEQUATE LOOKOUT WHILE MANEUVERING WHICH RESULTED IN A COLLISION WITH A TRANSMISSION WIRE.
Full Narrative
DURING A LOCAL FLIGHT, THE PILOT WAS FLYING AT APRX 800 FT AGL LOOKING FOR A TIRE THAT HAD FALLEN OFF A TRUCK. THE FLIGHT WAS PARALLELING A ROAD WHEN THE PILOT SPOTTED WHAT HE THOUGHT WAS THE TIRE. THE PILOT MADE A LEFT DESCENDING TURN TO GET A CLOSER LOOK WHEN THE AIRPLANE STRUCK A TRANMISSION WIRE. THE PILOT WAS UNAWARE OF THE COLLISION AND PROCEEDED TO ANOTHER LANDING STRIP. IT WAS LATER FOUND THAT THE LEFT WINGS LEADING EDGE WAS DENTED AND A GRASS FIRE HAD IGNITED FROM THE DOWNED WIRE.
Flight
Event TypeAccident
Event Time11:00 MDT
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna U206
Tail NumberN2107F
Aircraft CategoryAir
DamageSubstantial
OperatorLarry C Hoffman
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · IO-520-A5 · Reciprocating · 285
Seats6
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 45 · Third Class
Conditions
ConditionsVMC
LightDaylight
Wind270° @ 5 kt
Visibility30 sm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter0
Weather SourcePILO