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
March 28, 2017 · Thomas Craig E Wittman W-10 NO Series · N13XZ
Stevensville, MT
Overview
Report Status
Final with probable cause
Event Type
Accident
Date
March 28, 2017
Injury Outcomes
No injuries (1 uninjured)
Location
Stevensville, MT
Aircraft
Thomas Craig E Wittman W-10 NO Series (2015)
Tail Number
N13XZ
Injuries
None
Aircraft Damage
Substantial
NTSB Number
GAA17CA212
The pilot of the tailwheel-equipped airplane reported that, after landing at an airport along his route, he observed a leak from the left master brake cylinder. He added that he "wiped up [a] considerable [amount of] brake fluid from the floorboard," conducted a "thorough inspection" of the left brake, and then departed for another airport. He further reported that, during the landing roll, the airplane weathervaned into the crosswind, and he applied "full rudder and [the] application of brake found no brake available." He added that, after pumping the brakes, they began to function. The airplane veered off the runway to the right, and the left main landing gear collapsed. The airplane sustained substantial damage to the fuselage.
NTSB Probable Cause
The pilot’s decision to take off with a known master brake cylinder leak and his subsequent failure to maintain directional control during landing.
Full Narrative
The pilot of the tailwheel-equipped airplane reported that, after landing at an airport along his route, he observed a leak from the left master brake cylinder. He added that he "wiped up [a] considerable [amount of] brake fluid from the floorboard", did a "thorough inspection" of the left brake, and then departed for another airport. He further reported that, during the landing roll at the accident airport, the airplane weathervaned into the crosswind, and he applied "full rudder and [the] application of brake found no brake available". After pumping the brake, he added that, they began to function. The airplane veered off the runway to the right and the left main landing gear collapsed. The airplane sustained substantial damage to the fuselage.
Flight
Event TypeAccident
Event Time16:30 MDT
Nearest AirportStevensville (0nm N)
Runway12
Runway Length3800 ft
Runway Width75 ft
Flight Plan FiledNone
Flight Plan ActivatedNo
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftThomas Craig E Wittman W-10 NO Series
Tail NumberN13XZ
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · IO-520 · Reciprocating · 285
Seats2
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 69 · Third Class · None
Conditions
ConditionsVMC
LightDaylight
Wind340° @ 4 kt
Visibility10 sm
CeilingOvercast 5500 ft
Temperature / Dew Point48 / 27 C
Altimeter30.19 inHg
Observation Time21:53
Weather SourceWFAC