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
October 15, 1991 · Mooney M20K · N3947H
Knox, IN
Overview
Report Status
Probable Cause
Event Type
Accident
Date
October 15, 1991
Injury Outcomes
No injuries (2 uninjured)
Location
Knox, IN
Aircraft
Mooney M20K
Tail Number
N3947H
Operator
Northern Harvest Furniture
Injuries
None
Aircraft Damage
Substantial
NTSB Number
CHI92LA010
DURING CRUISE FLIGHT AT 11,000 FEET THE PILOT NOTED A LOSS OF ENGINE POWER AND '0' OIL PRESSURE. THE AIRPLANE WAS VECTORED TO THE CLOSEST AIRPORT BUT WAS UNABLE TO MAKE THE RUNWAY. A FORCED LANDING WAS MADE IN A CORN FIELD AND THE NOSE GEAR COLLAPSED. POST ACCIDENT INSPECTION REVEALED A BROKEN ROD ON THE NUMBER 2 CYLINDER.
NTSB Probable Cause
THE OVERLOAD FAILURE OF THE #2 CYLINDER CONNECTING ROD. CONTRIBUTING TO THE ACCIDENT WAS THE NIGHT LIGHT CONDITIONS AND THE PILOT'S INABILITY TO REACH A SUITABLE LANDING AREA.
Full Narrative
DURING CRUISE FLIGHT AT 11,000 FEET THE PILOT NOTED A LOSS OF ENGINE POWER AND '0' OIL PRESSURE. THE AIRPLANE WAS VECTORED TO THE CLOSEST AIRPORT BUT WAS UNABLE TO MAKE THE RUNWAY. A FORCED LANDING WAS MADE IN A CORN FIELD AND THE NOSE GEAR COLLAPSED. POST ACCIDENT INSPECTION REVEALED A BROKEN ROD ON THE NUMBER 2 CYLINDER.
Flight
Event TypeAccident
Event Time21:15 EDT
Nearest Airport0nm N
Runway0
Flight Plan FiledIFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftMooney M20K
Tail NumberN3947H
Aircraft CategoryAir
DamageSubstantial
OperatorNorthern Harvest Furniture
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · TSIO-360-GBI · Reciprocating · 210
Seats4
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 61 · Second Class
Conditions
ConditionsVMC
LightDark Night
Wind250° @ 13 kt
Visibility7 sm
CeilingBroken clouds 8500 ft
Temperature / Dew Point0 C / 0 C
Altimeter0
Observation Time00:51
Weather SourceWFAC