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 9, 1992 · Cessna 210J · N6172F
Groton, CT
Overview
Report Status
Probable Cause
Event Type
Accident
Date
August 9, 1992
Injury Outcomes
1 injury (1 minor injury)
Location
Groton, CT
Aircraft
Cessna 210J
Tail Number
N6172F
Operator
William J Dally
Injuries
Minor
Aircraft Damage
Destroyed
NTSB Number
NYC92LA152
THE PILOT REPORTED THAT WHILE AT A CRUISE ALTITUDE OF 6000 FEET THE ENGINE OIL TEMPERATURE BEGAN TO INCREASE. HE ASKED ATC FOR VECTORS TO THE NEAREST AIRPORT. THE PILOT WAS VECTORED FOR AN ILS APPROACH BECAUSE OF LOW CEILINGS. ABOUT 8 NM FROM THE AIRPORT THE ENGINE OIL PRESSURE DROPPED TO ZERO AND THE ENGINE STOPPED COMPLETELY. THE PILOT MADE A FORCED LANDING IN THE OCEAN AND AFTER HE EVACUATED THE AIRPLANE IT SANK. THE AIRPLANE WAS NOT RECOVERED FROM THE OCEAN AND THE REASON FOR THE ENGINE FAILURE WAS NOT DETERMINED.
NTSB Probable Cause
A FORCED LANDING IN UNSUITABLE TERRAIN AS A RESULT OF A COMPLETE LOSS OF ENGINE POWER FOR UNKNOWN REASONS.
Full Narrative
THE PILOT REPORTED THAT WHILE AT A CRUISE ALTITUDE OF 6000 FEET THE ENGINE OIL TEMPERATURE BEGAN TO INCREASE. HE ASKED ATC FOR VECTORS TO THE NEAREST AIRPORT. THE PILOT WAS VECTORED FOR AN ILS APPROACH BECAUSE OF LOW CEILINGS. ABOUT 8 NM FROM THE AIRPORT THE ENGINE OIL PRESSURE DROPPED TO ZERO AND THE ENGINE STOPPED COMPLETELY. THE PILOT MADE A FORCED LANDING IN THE OCEAN AND AFTER HE EVACUATED THE AIRPLANE IT SANK. THE AIRPLANE WAS NOT RECOVERED FROM THE OCEAN AND THE REASON FOR THE ENGINE FAILURE WAS NOT DETERMINED.
Flight
Event TypeAccident
Event Time18:12 EDT
Nearest Airport0nm N
Runway0
Flight Plan FiledIFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna 210J
Tail NumberN6172F
Aircraft CategoryAir
DamageDestroyed
OperatorWilliam J Dally
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · IO-520-J · Reciprocating · 285
Seats6
People & Injuries
Injury Summary1 injury (1 minor injury)
Fatal0
Serious0
Minor1
Uninjured0
Total1
Crew 1Age 32 · Second Class
Conditions
ConditionsIMC
LightDaylight
WindCalm
CeilingOvercast 400 ft
Temperature / Dew Point0 C / 0 C
Altimeter0
Weather SourcePILO