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
May 18, 1982 · Bell 47G-2 · N11VH
Grandview, WA
Overview
Report Status
Preliminary report
Event Type
Accident
Date
May 18, 1982
Injury Outcomes
No injuries (1 uninjured)
Location
Grandview, WA
Aircraft
Bell 47G-2
Tail Number
N11VH
Operator
Valicopters
Injuries
None
Aircraft Damage
Substantial
NTSB Number
SEA82DA072
WHILE DISPENSING HERBICIDE (SYSTOX) OVER AN APPLE ORCHARD THE PILOT SENSED THAT THE ENGINE WAS BINDING FOLLOWED BY A POWER LOSS. THE PILOT ELECTED TO DUMP THE HERBICIDE AND PERFORMED A POWER-OFF AUTOROTATION LANDING IN A GRAPE VINEYARD. INVESTIGATION REVEALED THAT THE #5 CYLINDER CONNECTING ROD HAD OVER HEATED AT THE BEARING JOURNAL, THE BOLT BROKE AND THE CAP SEPARATED AT THE PARTING SURFACE.
Full Narrative
WHILE DISPENSING HERBICIDE (SYSTOX) OVER AN APPLE ORCHARD THE PILOT SENSED THAT THE ENGINE WAS BINDING FOLLOWED BY A POWER LOSS. THE PILOT ELECTED TO DUMP THE HERBICIDE AND PERFORMED A POWER-OFF AUTOROTATION LANDING IN A GRAPE VINEYARD. INVESTIGATION REVEALED THAT THE #5 CYLINDER CONNECTING ROD HAD OVER HEATED AT THE BEARING JOURNAL, THE BOLT BROKE AND THE CAP SEPARATED AT THE PARTING SURFACE.
Flight
Event TypeAccident
Event Time07:30 PDT
Nearest Airport0nm N
Runway0
Runway Length0
Runway Width0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBell 47G-2
Tail NumberN11VH
Aircraft CategoryHeli
DamageSubstantial
OperatorValicopters
Operating RulePart 137
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · TVO-435-A1B · Reciprocating · 240
Seats2
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 47 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind210° @ 6 kt
Visibility40 sm
CeilingNone
Temperature / Dew Point13 C / 0 C
Altimeter30.00 inHg
Observation Time07:45