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
June 7, 1985 · Hughes 369HS · N9146F
Aiken, SC
Overview
Report Status
Preliminary report
Event Type
Accident
Date
June 7, 1985
Injury Outcomes
No injuries (2 uninjured)
Location
Aiken, SC
Aircraft
Hughes 369HS
Tail Number
N9146F
Injuries
None
Aircraft Damage
Substantial
NTSB Number
ATL85LA183
DURING A LANDING, THE ENG LOST POWER & THE HELICOPTER TOUCHED DOWN HARD. THE PLT STATED THAT PRIOR TO THE 15 MIN FLT, THE FUEL GAGE WAS INDICATING 125 LBS OF FUEL & AT THE ACCIDENT SITE IT INDICATED 90 LBS OF FUEL. A POST CRASH INSPECTION OF THE FUEL SYSTEM REVEALED THAT 3 SUPPORT BRACKETS WERE NOT INSTALLED IN THE FUEL CELL & ONLY A TRACE OF FUEL WAS REMAINING. THE ABSENCE OF THE BRACKETS PERMITTED THE FUEL CELL TO COLLAPSE AS FUEL WAS CONSUMED & RESULTED IN ERRONEOUS FUEL GAGE READINGS. THE FUEL LOW CAUTION INDICATOR WAS ALSO FOUND TO BE INOPERATIVE DUE TO A CANNON PLUG THAT WAS IMPROPERLY WIRED.
Full Narrative
DURING A LANDING, THE ENG LOST POWER & THE HELICOPTER TOUCHED DOWN HARD. THE PLT STATED THAT PRIOR TO THE 15 MIN FLT, THE FUEL GAGE WAS INDICATING 125 LBS OF FUEL & AT THE ACCIDENT SITE IT INDICATED 90 LBS OF FUEL. A POST CRASH INSPECTION OF THE FUEL SYSTEM REVEALED THAT 3 SUPPORT BRACKETS WERE NOT INSTALLED IN THE FUEL CELL & ONLY A TRACE OF FUEL WAS REMAINING. THE ABSENCE OF THE BRACKETS PERMITTED THE FUEL CELL TO COLLAPSE AS FUEL WAS CONSUMED & RESULTED IN ERRONEOUS FUEL GAGE READINGS. THE FUEL LOW CAUTION INDICATOR WAS ALSO FOUND TO BE INOPERATIVE DUE TO A CANNON PLUG THAT WAS IMPROPERLY WIRED.
Flight
Event TypeAccident
Event Time17:45 EDT
Nearest AirportAiken Muni (0nm N)
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftHughes 369HS
Tail NumberN9146F
Aircraft CategoryHeli
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeTurboshaft
Engine DetailsAllison · 250-C18A · Turboshaft · 278
Seats5
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 70 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind180° @ 5 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point0 C
Altimeter0
Weather SourcePILO