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 1, 2011 · De Havilland · C-GMCW
Mayo, CA
Overview
Report Status
Factual report
Event Type
Accident
Date
April 1, 2011
Injury Outcomes
1 injury (1 fatality)
Location
Mayo, CA
Aircraft
De Havilland
Tail Number
C-GMCW
Operator
Black Sheep Aviation and Cattle
Injuries
Fatal
Aircraft Damage
Substantial
NTSB Number
ANC11WA026
On March 31, 2011, approximately 1745 pacific daylight time, a Canadian registered De Havilland DHC-3T airplane, Canadian registration C-GMCW sustained substantial damage when it broke-up in-flight, about 39 nautical miles northeast of Mayo, Yukon Territory, Canada. The airplane was owned and operated by the Black Sheep Aviation and Cattle Company, Whitehorse, Yukon Territory. The solo pilot was killed in the accident. The investigation of this accident is under the jurisdiction of the Transportation Safety Board of Canada. Further information pertaining to this accident can be obtained from: Transportation Safety Board of Canada 17803-106A Ave, Edmonton, Alberta, Canada, T5S 1V8
Full Narrative
On March 31, 2011, approximately 1745 pacific daylight time, a Canadian registered De Havilland DHC-3T airplane, Canadian registration C-GMCW sustained substantial damage when it broke-up in-flight, about 39 nautical miles northeast of Mayo, Yukon Territory, Canada. The airplane was owned and operated by the Black Sheep Aviation and Cattle Company, Whitehorse, Yukon Territory. The solo pilot was killed in the accident. The investigation of this accident is under the jurisdiction of the Transportation Safety Board of Canada. Further information pertaining to this accident can be obtained from: Transportation Safety Board of Canada 17803-106A Ave, Edmonton, Alberta, Canada, T5S 1V8
Flight
Event TypeAccident
Event Time00:45 UTC
Nearest Airport0nm
Flight Plan FiledUnknown
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftDe Havilland
Tail NumberC-GMCW
Aircraft CategoryAir
DamageSubstantial
OperatorBlack Sheep Aviation and Cattle
Engines1
People & Injuries
Injury Summary1 injury (1 fatality)
Fatal1
Serious0
Minor0
Uninjured0
Total1
Conditions
WindCalm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter0