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
Featured Report

Loading…

Loading featured report…

Loading…
Open 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…

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 manufacturers

Airports

More airports

Operators

More operators

About

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

November 27, 2015 · Cessna 172 Undesignat · N7176A

Manley Hot Springs, AK

Overview

Report Status
Final with probable cause
Event Type
Accident
Date
November 27, 2015
Injury Outcomes
No injuries (1 uninjured)
Location
Manley Hot Springs, AK
Aircraft
Cessna 172 Undesignat (1956)
Tail Number
N7176A
Operator
Tousignant John R
Injuries
None
Aircraft Damage
Substantial
NTSB Number
ANC16CA009

The pilot reported that prior to departing in a ski-equipped airplane, from a remote frozen, snow covered lake; he prepared the off-airport site by packing down the loose snow. During his takeoff roll, the left ski slid off the prepared surface, and encountered loose snow and water overflow which pulled the airplane hard to the left. The left wing struck a tree, substantially damaging the left wing. The pilot stated that there were no preaccident mechanical anomalies that would have precluded normal operation. In the recommendation section of the NTSB Accident/Incident Reporting Form 6120.1, the pilot stated that the accident may have been avoided if he had prepared a wider takeoff area.

NTSB Probable Cause

Environmental issues-Physical environment-Runway/land/takeoff/taxi surface-Snow/slush/ice covered-Effect on equipment - F

Full Narrative

The pilot reported that prior to departing in a ski-equipped airplane, from a remote frozen, snow covered lake; he prepared the off-airport site by packing down the loose snow. During his takeoff roll, the left ski slid off the prepared surface, and encountered loose snow and water overflow which pulled the airplane hard to the left. The left wing struck a tree, substantially damaging the left wing. The pilot stated that there were no preaccident mechanical anomalies that would have precluded normal operation.

Flight

Event TypeAccident
Event Time11:00 AKST
Nearest Airport0nm
Flight Plan FiledNone
Flight Plan ActivatedNo
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftCessna 172 Undesignat
Tail NumberN7176A
Aircraft CategoryAir
DamageSubstantial
OperatorTousignant John R
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · IO360 SER · Reciprocating · 200
Seats4

People & Injuries

Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 56 · Third Class · None

Conditions

ConditionsVMC
LightDaylight
WindCalm
Visibility10 sm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter0
Weather SourcePILO

Appendix: Source Data