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
January 4, 2013 · Piper PA-18-150 · N7780Y
Palmer, AK
Overview
Report Status
Final with probable cause
Event Type
Accident
Date
January 4, 2013
Injury Outcomes
No injuries (1 uninjured)
Location
Palmer, AK
Aircraft
Piper PA-18-150
Tail Number
N7780Y
Operator
Keller Matthew C
Injuries
None
Aircraft Damage
Substantial
NTSB Number
ANC13CA019
The pilot departed from a private airstrip in a wheel/ski-equipped airplane on a local area flight. During the flight, he elected to land on an ice-covered, frozen lake, and, due to the bare ice conditions, he elected to land in a wheel configuration instead of ski configuration. During the landing roll, as the airplane slowed, the left tire broke through a layer of thin ice atop several inches of water, and the airplane veered left. The pilot applied engine power in an attempt to correct the veer, but the airplane subsequently ground-looped to the left, sustaining substantial damage to the empennage and fuselage. The pilot reported no preaccident malfunctions or failures with the airplane that would have precluded normal operation.
NTSB Probable Cause
The pilot's selection of unsuitable terrain for an off-airport landing, which resulted in a ground-loop.
Full Narrative
The pilot departed from a private airstrip, in a wheel/ski-equipped airplane, on a local area flight. During the flight he elected to land on an ice-covered, frozen lake, and due to the bare ice conditions, he elected to land in a wheel configuration instead of ski configuration. During the landing roll, as the airplane slowed, the left tire broke through a layer of thin ice atop several inches of water, and the airplane veered left. The pilot applied engine power in an attempt to correct the veer, but the airplane subsequently ground-looped to the left, sustaining substantial damage to the empennage and fuselage. The pilot reported no preaccident anomalies with the airplane.
Flight
Event TypeAccident
Event Time07:15 AKST
Nearest Airport0nm
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftPiper PA-18-150
Tail NumberN7780Y
Aircraft CategoryAir
DamageSubstantial
OperatorKeller Matthew C
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-320 SERIES · Reciprocating · 160
Seats2
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 33 · Second Class · None
Conditions
ConditionsVMC
LightDaylight
WindCalm
Visibility100 sm
CeilingNone
Temperature / Dew Point28 C / 0 C
Altimeter0
Weather SourcePILO