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
July 28, 2011 · Ayres S2R-G6 · N331BF
Forest City, IA
Overview
Report Status
Final with probable cause
Event Type
Accident
Date
July 28, 2011
Injury Outcomes
No injuries (1 uninjured)
Location
Forest City, IA
Aircraft
Ayres S2R-G6
Tail Number
N331BF
Operator
Central Balley Aviation
Injuries
None
Aircraft Damage
Substantial
NTSB Number
CEN11CA545
During an aerial application flight, the pilot had completed a spray run and initiated a climb to clear trees at the end of the field. The pilot reported that several trees and windmills were located at the southern end of the field and as the airplane made a climbing left turn, the right wing struck a windmill blade. The collision tore the spray boom from the airplane, which then impacted the airplane’s right side stabilizer and fuselage, causing substantial damage. The pilot was able to perform a successful landing on a nearby gravel road.
NTSB Probable Cause
The pilot's inadequate visual lookout during an aerial application run, which resulted in an in-flight collision with a windmill.
Full Narrative
The agricultural pilot had completed a spray run and pulled up to clear trees at the end of the field. The pilot reported that several trees and windmills were located at the southern end of the field and as the airplane made a climbing left turn, the right wing struck a windmill blade. The collision tore the spray boom from the airplane, which then impacted the airplane’s right side stabilizer and fuselage, causing substantial damage. The pilot was able to perform a successful precautionary landing on a nearby gravel road.
Flight
Event TypeAccident
Event Time18:15 CDT
Nearest Airport0nm
Flight Plan FiledUnknown
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftAyres S2R-G6
Tail NumberN331BF
Aircraft CategoryAir
DamageSubstantial
OperatorCentral Balley Aviation
Operating RulePart 137
Engines1
Engine TypeTurboprop
Engine DetailsAiresearch · TPE331-5&6SER · Turboprop · 776
Seats1
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 47 · Second Class · None
Conditions
ConditionsVMC
LightDaylight
WindCalm
Visibility10 sm
CeilingNone
Temperature / Dew Point70 F
Altimeter29.94 inHg
Observation Time23:35