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
January 12, 1984 · Hiller UH-12C · N5317V
San Juan, PR
Overview
Report Status
Preliminary report
Event Type
Accident
Date
January 12, 1984
Injury Outcomes
1 injury (1 fatality), 1 uninjured
Location
San Juan, PR
Aircraft
Hiller UH-12C
Tail Number
N5317V
Operator
Hector Gratacos
Injuries
Fatal
NTSB Number
MIA84FA058
A PERFORMER FELL FROM A TRAPEZE RIGGED BELOW THE HELICOPTER WHILE IT WAS HOVERING AT ABOUT 150 FT AGL. THE FAA HAD NOT AUTHORIZED THE MODIFICATION TO THE ACFT. THE PLT WAS NOT CERTIFIED FOR EXTERNAL LOAD OPERATIONS. THE PERFORMER REPORTEDLY HAD NOT DONE THIS ACT BEFORE AND WAS NOT IN EXCELLENT PHYSICAL CONDITION.
Full Narrative
A PERFORMER FELL FROM A TRAPEZE RIGGED BELOW THE HELICOPTER WHILE IT WAS HOVERING AT ABOUT 150 FT AGL. THE FAA HAD NOT AUTHORIZED THE MODIFICATION TO THE ACFT. THE PLT WAS NOT CERTIFIED FOR EXTERNAL LOAD OPERATIONS. THE PERFORMER REPORTEDLY HAD NOT DONE THIS ACT BEFORE AND WAS NOT IN EXCELLENT PHYSICAL CONDITION.
Flight
Event TypeAccident
Event Time12:30 AST
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftHiller UH-12C
Tail NumberN5317V
Aircraft CategoryHeli
OperatorHector Gratacos
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsFranklin · VO-335 · Reciprocating · 250
Seats3
People & Injuries
Injury Summary1 injury (1 fatality), 1 uninjured
Fatal1
Serious0
Minor0
Uninjured1
Total2
Crew 1Age 50 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind80° @ 12 kt
Visibility15 sm
CeilingNone
Altimeter29.00 inHg
Observation Time16:54
Weather SourceWFAC