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
September 28, 2024 · Piper PA-18-150 · N4155W
Delta, CO
Overview
Report Status
Probable Cause
Event Type
Accident
Date
September 28, 2024
Injury Outcomes
No injuries (2 uninjured)
Location
Delta, CO
Aircraft
Piper PA-18-150 (1993)
Tail Number
N4155W
Operator
Colorado Mesa University
Injuries
None
Aircraft Damage
Substantial
NTSB Number
CEN24LA373
The pilot reported that during landing he allowed the airplane to sink faster than intended and it bounced on the main tires. He immediately executed a go-around; however, during the go-around the airplane went off the side of the runway, and struck thick bushes, terrain and rocks before gaining altitude. Just before gaining altitude, the airplane struck a large rock which damaged the right main landing gear. During the subsequent landing, the right main landing gear collapsed, and the airplane’s nose and right wing struck the ground. The airplane then swung to the right and the left wing struck the ground. The airplane sustained substantial damage to the left wing. The pilot reported that there were no mechanical malfunctions or failures with the airplane.
NTSB Probable Cause
The pilot’s loss of aircraft control during a bounced landing and go-around, during which the right main landing gear struck a large rock, which damaged it such that it collapsed during the following landing, which caused the airplane to impact the ground resulting in substantial damage to the left wing.
Full Narrative
The pilot reported that during landing he allowed the airplane to sink faster than intended and it bounced on the main tires. He immediately executed a go-around; however, during the go-around the airplane went off the side of the runway, and struck thick bushes, terrain and rocks before gaining altitude. Just before gaining altitude, the airplane struck a large rock which damaged the right main landing gear. During the subsequent landing, the right main landing gear collapsed, and the airplane’s nose and right wing struck the ground. The airplane then swung to the right and the left wing struck the ground. The airplane sustained substantial damage to the left wing. The pilot reported that there were no mechanical malfunctions or failures with the airplane.
Flight
Event TypeAccident
Event Time09:50 MDT
Nearest AirportBLAKEFLD (0nm WSW)
Runway03/2
Runway Length5598 ft
Runway Width75 ft
Flight Plan FiledNone
Flight Plan ActivatedNo
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftPiper PA-18-150
Tail NumberN4155W
Aircraft CategoryAir
DamageSubstantial
OperatorColorado Mesa University
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-320 · Reciprocating · 150
Seats2
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 40 · First Class · None
Conditions
ConditionsVMC
LightDaylight
WindCalm
Visibility10 sm
CeilingNone
Temperature / Dew Point66 F / 41 F
Altimeter30.34 inHg
Observation Time09:53
Weather SourceWFAC