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
May 7, 1985 · Piper PA-11-494 · N4707H
Alliance, OH
Overview
Report Status
Preliminary report
Event Type
Accident
Date
May 7, 1985
Injury Outcomes
No injuries (2 uninjured)
Location
Alliance, OH
Aircraft
Piper PA-11-494
Tail Number
N4707H
Injuries
None
Aircraft Damage
Substantial
NTSB Number
CHI85LA190
THE ACFT APPROACH WAS HIGH AND FAST. THE LANDING WAS MADE WITH 500-600 FT OF RUNWAY REMAINING. THE ACFT BRAKES WERE NOT SUFFICIENT TO STOP ON THE RUNWAY. THE PILOT ADDED POWER AND VEERED LEFT OFF THE END OF THE RUNWAY TO AVOID A HEAVILY TRAVELED ROAD, THE AIRCRAFT COLLIDED WITH TREES.
Full Narrative
THE ACFT APPROACH WAS HIGH AND FAST. THE LANDING WAS MADE WITH 500-600 FT OF RUNWAY REMAINING. THE ACFT BRAKES WERE NOT SUFFICIENT TO STOP ON THE RUNWAY. THE PILOT ADDED POWER AND VEERED LEFT OFF THE END OF THE RUNWAY TO AVOID A HEAVILY TRAVELED ROAD, THE AIRCRAFT COLLIDED WITH TREES.
Flight
Event TypeAccident
Event Time18:00 EDT
Nearest AirportTri-City (0nm N)
Runway17
Runway Length2800 ft
Runway Width60 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftPiper PA-11-494
Tail NumberN4707H
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · C-90 · Reciprocating · 90
Seats2
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 39 · Third Class
Conditions
ConditionsVMC
LightDaylight
Wind290° @ 6 kt
Visibility15 sm
CeilingNone
Temperature / Dew Point63 F / 39 C
Altimeter30.00 inHg
Weather SourcePILO