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 15, 2010 · Hiller-Rogerson Helicopter UH12E · N4034Z
Madison, FL
Overview
Report Status
Final with probable cause
Event Type
Accident
Date
November 15, 2010
Injury Outcomes
No injuries (1 uninjured)
Location
Madison, FL
Aircraft
Hiller-Rogerson Helicopter UH12E
Tail Number
N4034Z
Operator
Summit Helicopters
Injuries
None
Aircraft Damage
Substantial
NTSB Number
ERA11CA059
According to the helicopter pilot, he was completing north-south herbicide spray patterns with wind varying from east to south at 4 to 5 mph. As the pilot positioned the helicopter for the next northern track, after completing his turn, he began to feel it lose altitude. The pilot stated that he tried to regain control by pushing forward the cyclic and lowering the collective in an effort to get out of the settling with power. When ground contact was imminent, he raised the collective to cushion the impact. The helicopter touched down, spun, and rolled onto its left side. Postaccident examination by a Federal Aviation Administration inspector revealed substantial damage to the tail boom. The pilot stated that there were no preimpact mechanical malfunctions with the helicopter.
NTSB Probable Cause
The pilot's encounter with a settling with power condition while he was performing slow, low-level, out-of- ground-effect flight maneuvers.
Full Narrative
According to the helicopter pilot, he was completing north-south herbicide spray patterns with winds varying from the east to south at 4 to 5 mph. As the pilot positioned the helicopter for the next northern track, he "began to feel the aircraft start to lose altitude after the turn." The pilot stated that he tried to regain control by pushing forward the cyclic and lowering the collective to "get out of the settling with power." When ground contact was imminent, he raised the collective to cushion the impact. The helicopter touched down, spun, and rolled onto its left side. Post-accident examination by a Federal Aviation Administration inspector revealed substantial damage to the tail boom. The pilot stated that there were no pre-impact mechanical malfunctions.
Flight
Event TypeAccident
Event Time11:15 EST
Nearest Airport0nm
Flight Plan FiledUnknown
Flight Plan ActivatedNo
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftHiller-Rogerson Helicopter UH12E
Tail NumberN4034Z
Aircraft CategoryHeli
DamageSubstantial
OperatorSummit Helicopters
Operating RulePart 137
Engines1
Engine TypeTurboshaft
Engine DetailsRolls-Royce · C-20B · Turboshaft · 420
Seats3
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 28 · Second Class · None
Conditions
ConditionsVMC
LightDaylight
Wind190° @ 8 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point55
Altimeter29.96 inHg
Observation Time15:53
Weather SourceWFAC