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
March 19, 1987 · Cessna 170B · N3439D
Dillingham, AK
Overview
Report Status
Preliminary report
Event Type
Accident
Date
March 19, 1987
Injury Outcomes
No injuries (2 uninjured)
Location
Dillingham, AK
Aircraft
Cessna 170B
Tail Number
N3439D
Injuries
None
Aircraft Damage
Substantial
NTSB Number
ANC87LA054
AS THE PLT WAS TAKING OFF FROM A FROZEN LAKE WITH A SKI EQUIPPED ACFT, IT COLLIDED WITH A SNOWBANK & WAS DAMAGED. THE PLT RPRTD THAT HE HAD JUST LANDED A FEW MINUTES EARLIER & THAT THE WIND WAS BLOWING DIFFERENTLY WHEN HE TOOK OFF AGAIN. AFTER THE ACDNT, POLICE PERSONNEL NOTED THAT THE PLT HAD AN ODOR OF ALCOHOL ON HIS BREATH, AS WELL AS SLURRED SPEECH & SOME DIFFICULTY IN WALKING. WHEN HIS BREATH WAS CHECKED WITH AN INTOXIMETER 3000 TEST MACHINE, IT SHOWED AN ALCOHOL LVL THAT WAS EQUIVALENT TO 0.123% BAC. THE PLTS LAST FAA MEDICAL EXAM WAS ON 10/13/78; HIS LAST BFR DATE WASN'T ESTABLISHED.
Full Narrative
AS THE PLT WAS TAKING OFF FROM A FROZEN LAKE WITH A SKI EQUIPPED ACFT, IT COLLIDED WITH A SNOWBANK & WAS DAMAGED. THE PLT RPRTD THAT HE HAD JUST LANDED A FEW MINUTES EARLIER & THAT THE WIND WAS BLOWING DIFFERENTLY WHEN HE TOOK OFF AGAIN. AFTER THE ACDNT, POLICE PERSONNEL NOTED THAT THE PLT HAD AN ODOR OF ALCOHOL ON HIS BREATH, AS WELL AS SLURRED SPEECH & SOME DIFFICULTY IN WALKING. WHEN HIS BREATH WAS CHECKED WITH AN INTOXIMETER 3000 TEST MACHINE, IT SHOWED AN ALCOHOL LVL THAT WAS EQUIVALENT TO 0.123% BAC. THE PLTS LAST FAA MEDICAL EXAM WAS ON 10/13/78; HIS LAST BFR DATE WASN'T ESTABLISHED.
Flight
Event TypeAccident
Event Time10:20 AKST
Nearest AirportShannons Pond (0nm N)
Runway0
Runway Length0
Runway Width0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna 170B
Tail NumberN3439D
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · O-300-D · Reciprocating · 145
Seats4
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 43 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind190° @ 8 kt
Visibility30 sm
CeilingNone
Temperature / Dew Point30 C / 18 C
Altimeter29.00 inHg
Observation Time15:27
Weather SourceWIT