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
July 22, 1983 · Robinson R22 · N9066P
Canton, PA
Overview
Report Status
Preliminary report
Event Type
Accident
Date
July 22, 1983
Injury Outcomes
2 injuries (2 fatalities)
Location
Canton, PA
Aircraft
Robinson R22
Tail Number
N9066P
Operator
Muth Aircraft
Injuries
Fatal
Aircraft Damage
Destroyed
NTSB Number
NYC83FA189
WHILE THE HELICOPTER WAS ON A POWER LINE PATROL FLT, ONE OF THE MAIN ROTOR BLADES SEPARATED & THE ACFT CRASHED & BURNED. NUMEROUS PERSONS SAW THE HELICOPTER WHILE THE PLT WAS PATROLLING AT LOW ALT. SEVERAL REPORTED SEEING THE ACFT MANEUVER ABRUPTLY OVER OBTACLES. ALSO, SEVERAL WITNESSES SAW THE HELICOPTER AT THE TIME OF THE ACCIDENT. ONE SAID THE HELICOPTER WOBBLED OR TILTED FROM RIGHT TO LEFT & ALMOST IMMEDIATELY EXPLODED IN THE AIR. AN INVESTIGATION REVEALED THAT THE SEPARATED MAIN ROTOR BLADE PN A-016-1, A REVISION W BLADE, HAD FAILED FROM FATIGUE ABOUT 8 1/4 INCHES OUTBOARD OF THE SPINDLE BOLT CENTERLINE.
Full Narrative
WHILE THE HELICOPTER WAS ON A POWER LINE PATROL FLT, ONE OF THE MAIN ROTOR BLADES SEPARATED & THE ACFT CRASHED & BURNED. NUMEROUS PERSONS SAW THE HELICOPTER WHILE THE PLT WAS PATROLLING AT LOW ALT. SEVERAL REPORTED SEEING THE ACFT MANEUVER ABRUPTLY OVER OBTACLES. ALSO, SEVERAL WITNESSES SAW THE HELICOPTER AT THE TIME OF THE ACCIDENT. ONE SAID THE HELICOPTER WOBBLED OR TILTED FROM RIGHT TO LEFT & ALMOST IMMEDIATELY EXPLODED IN THE AIR. AN INVESTIGATION REVEALED THAT THE SEPARATED MAIN ROTOR BLADE PN A-016-1, A REVISION W BLADE, HAD FAILED FROM FATIGUE ABOUT 8 1/4 INCHES OUTBOARD OF THE SPINDLE BOLT CENTERLINE.
Flight
Event TypeAccident
Event Time12:12 EDT
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireGrd
Aircraft ExplosionGrd
Aircraft
AircraftRobinson R22
Tail NumberN9066P
Aircraft CategoryHeli
DamageDestroyed
OperatorMuth Aircraft
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-320-A2C · Reciprocating · 124
Seats2
People & Injuries
Injury Summary2 injuries (2 fatalities)
Fatal2
Serious0
Minor0
Uninjured0
Total2
Crew 1Age 22 · Unknown
Conditions
ConditionsVMC
LightDaylight
Wind300° @ 14 kt
Visibility25 sm
CeilingNone
Temperature / Dew Point50
Altimeter29.00 inHg
Observation Time11:50