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
April 3, 2021 · Cessna 180 · N1522C
Delavan, WI
Overview
Report Status
Probable Cause
Event Type
Accident
Date
April 3, 2021
Injury Outcomes
1 injury (1 minor injury)
Location
Delavan, WI
Aircraft
Cessna 180 (1953)
Tail Number
N1522C
Operator
Hansen Robert C
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
CEN21LA180
The pilot reported that he was landing on his private grass strip in gusting crosswind conditions, when he noted the landing roll extended longer than he expected. As he approached the end of the runway, he got on the brakes “too hard” and the airplane nosed over and came to rest inverted. The airplane sustained substantial damage to both wings, both wing struts, and the vertical stabilizer. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. The pilot reported that he should have been less aggressive on the brakes.
NTSB Probable Cause
The pilot’s failure to maintain control of the airplane during the landing roll with gusting crosswinds, which resulted in his excessive brake input and a subsequent nose over.
Full Narrative
The pilot reported that he was landing on his private grass strip in gusting crosswind conditions, when he noted the landing roll extended longer than he expected. As he approached the end of the runway, he got on the brakes “too hard” and the airplane nosed over and came to rest inverted. The airplane sustained substantial damage to both wings, both wing struts, and the vertical stabilizer. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. The pilot reported that he should have been less aggressive on the brakes.
Flight
Event TypeAccident
Event Time11:13 CDT
Nearest AirportPRIVATE (0nm N)
Runway18
Runway Length1600 ft
Runway Width60 ft
Flight Plan FiledNone
Flight Plan ActivatedNo
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna 180
Tail NumberN1522C
Aircraft CategoryAir
DamageSubstantial
OperatorHansen Robert C
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · O-470-J · Reciprocating · 225
Seats4
People & Injuries
Injury Summary1 injury (1 minor injury)
Fatal0
Serious0
Minor1
Uninjured0
Total1
Crew 1Age 80 · Basc · Minor
Conditions
ConditionsVMC
LightDaylight
Wind240° @ 15 kt, gusting 21 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point59 F / 30 F
Altimeter30.07 inHg
Observation Time10:45
Weather SourceWFAC