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
August 11, 1993 · Erco 415D · CFJUB
Thomaston, ME
Overview
Report Status
Final with probable cause
Event Type
Accident
Date
August 11, 1993
Injury Outcomes
No injuries (1 uninjured)
Location
Thomaston, ME
Aircraft
Erco 415D
Tail Number
CFJUB
Injuries
None
Aircraft Damage
Substantial
NTSB Number
NYC93LA150
THE PILOT REPORTED THAT HE RECEIVED A WEATHER BRIEFING FROM THE FLIGHT SERVICE STATION, WHICH DID NOT PREDICT CONDITIONS. HE ARRIVED AT HIS DESTINATION, BUT HE COULD NOT LOCATE THE AIRPORT BECAUSE OF 'FOG'. HE CIRCLED THE AREA AND SAW A FIELD. AS HE MANEUVERED LOWER AND LOWER OVER THIS FIELD, THE AIRPLANE COLLIDED WITH THE TERRAIN. THE WEATHER REPORTED AT HIS DESTINATION AT THE TIME OF THE ACCIDENT WAS 200 FEET OVERCAST WITH NO FOG. THEE PILOT DID NOT POSSESS AN INSTRUMENT RATING. HE STATED THAT THERW WERE O MECHANICAL DIFFICULTIES WITH THE AIRPLANE.
NTSB Probable Cause
THE IMPROPER WEATHER EVALUATION BY THE NON-INSTRUMENT-RATED PILOT, AND THE SUBSEQUENT VFR FLIGHT INTO INSTRUMENT METEOROLOGIAL CONDITIONS, RESULTING IN A COLLISION WITH THE TERRAIN.
Full Narrative
On Tuesday, August 10, 1993, at 2050 eastern daylight time, an Aircoupe 415D, CFJUB, registered in Canada to and piloted by Paul Winterhalder, sustained substantial damage when it collided with the terrain near Rockland, Maine. The pilot received minor injuries. Instrument meteorological conditions prevailed, and no flight plan was filed. The flight was being conducted under 14 CFR 91. The pilot was attempting to land at the Knox County Regional Airport, Rockland, Maine. When he flew over the airport, the runways were obscured by fog. He said that he saw a field and began to maneuver over it in an attempt to find the runway. While maneuvering at low altitude, the airplane inadvertently contacted the terrain.
Flight
Event TypeAccident
Event Time20:50 EDT
Nearest Airport0nm
Runway0
Runway Width0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftErco 415D
Tail NumberCFJUB
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · C-85-12 · Reciprocating · 85
Seats2
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 52 · Third Class
Conditions
ConditionsIMC
LightDusk
WindCalm
Visibility10 sm
CeilingOvercast 200 ft
Temperature / Dew Point61 F / 55
Altimeter30.00 inHg
Observation Time00:56
Weather SourceWFAC