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
March 12, 1987 · Hughes 364HS · N4507C
Opa Locka, FL
Overview
Report Status
Preliminary report
Event Type
Accident
Date
March 12, 1987
Injury Outcomes
2 injuries (2 minor injuries)
Location
Opa Locka, FL
Aircraft
Hughes 364HS
Tail Number
N4507C
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
MIA87LA106
THE PILOT OF THE HELICOPTER WAS EXECUTING A NORMAL APPROACH TO THE GROUND WHEN AS HE NEARED THE GROUND THE VENTRAL FIN STRUCK THE GROUND. THE TAIL ROTOR DRIVESHAFT RE-CENTERED AND THE PILOT THOUGHT THE ACCOMPANYING SHUDDER WAS A TAIL ROTOR FAILURE, AND LANDED THE HELICOPTER HARD WITH FORWARD GROUND SPEED. THE AIRCRAFT THEN ROCKED FORWARD AND THE MAIN ROTOR BLADES STRUCK THE GROUND. THE MAIN ROTOR BLADES THEN SLAPPED THE TAILBOOM AS THE AIRCRAFT ROCKED BACK.
Full Narrative
THE PILOT OF THE HELICOPTER WAS EXECUTING A NORMAL APPROACH TO THE GROUND WHEN AS HE NEARED THE GROUND THE VENTRAL FIN STRUCK THE GROUND. THE TAIL ROTOR DRIVESHAFT RE-CENTERED AND THE PILOT THOUGHT THE ACCOMPANYING SHUDDER WAS A TAIL ROTOR FAILURE, AND LANDED THE HELICOPTER HARD WITH FORWARD GROUND SPEED. THE AIRCRAFT THEN ROCKED FORWARD AND THE MAIN ROTOR BLADES STRUCK THE GROUND. THE MAIN ROTOR BLADES THEN SLAPPED THE TAILBOOM AS THE AIRCRAFT ROCKED BACK.
Flight
Event TypeAccident
Event Time13:45 EST
Nearest AirportOPALOCKA (0nm N)
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftHughes 364HS
Tail NumberN4507C
Aircraft CategoryHeli
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeTurboshaft
Engine DetailsAllison · 250-C18 · Turboshaft · 250
Seats4
People & Injuries
Injury Summary2 injuries (2 minor injuries)
Fatal0
Serious0
Minor2
Uninjured0
Total2
Crew 1Age 29 · First Class
Conditions
ConditionsVMC
LightDaylight
Wind340° @ 6 kt
Visibility10 sm
CeilingBroken clouds 10000 ft
Temperature / Dew Point0 C / 0 C
Altimeter30.00 inHg
Observation Time18:45
Weather SourceWFAC