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
November 21, 1982 · Bell 47G-3B-1 · N73991
Tucson, AZ
Overview
Report Status
Preliminary report
Event Type
Accident
Date
November 21, 1982
Injury Outcomes
No injuries (1 uninjured)
Location
Tucson, AZ
Aircraft
Bell 47G-3B-1
Tail Number
N73991
Operator
Rrt Investments
Injuries
None
Aircraft Damage
Substantial
NTSB Number
LAX83LUJ05
THE SINGLE ENGINE LAND AIRPLANE PILOT WAS ON A SOLO INSTRUCTIONAL FLIGHT, PRACTICING LANDINGS IN THE HELICOPTER. HE REPORTED THAT DURING A LANDING, HE WAS TOO FAST. WHILE FLARING, THE TAIL ROTOR HIT THE GROUND AND ONE OF THE TAIL ROTOR BLADES SEPARATED. BEFORE THE AIRCRAFT COULD BE LANDED AND THE ENGINE SHUT DOWN, A SEVERE VIBRATION BEGAN (DUE TO THE LOSS OF THE BLADE) AND THE TAIL ROTOR GEAR BOX SEPARATED FROM THE AIRFRAME. NO OTHER DAMAGE WAS REPORTED.
Full Narrative
THE SINGLE ENGINE LAND AIRPLANE PILOT WAS ON A SOLO INSTRUCTIONAL FLIGHT, PRACTICING LANDINGS IN THE HELICOPTER. HE REPORTED THAT DURING A LANDING, HE WAS TOO FAST. WHILE FLARING, THE TAIL ROTOR HIT THE GROUND AND ONE OF THE TAIL ROTOR BLADES SEPARATED. BEFORE THE AIRCRAFT COULD BE LANDED AND THE ENGINE SHUT DOWN, A SEVERE VIBRATION BEGAN (DUE TO THE LOSS OF THE BLADE) AND THE TAIL ROTOR GEAR BOX SEPARATED FROM THE AIRFRAME. NO OTHER DAMAGE WAS REPORTED.
Flight
Event TypeAccident
Event Time14:35 MST
Nearest Airport0nm N
Runway0
Runway Length0
Runway Width0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBell 47G-3B-1
Tail NumberN73991
Aircraft CategoryHeli
DamageSubstantial
OperatorRrt Investments
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · TVO-435-B1A · Reciprocating · 270
Seats1
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 38 · Second Class
Conditions
ConditionsVMC
LightDaylight
WindCalm
CeilingNone
Temperature / Dew Point16 C / 0 C
Altimeter0
Observation Time14:35