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

March 8, 1993 · Cessna 180H · N9737G

Port Alsworth, AK

Overview

Report Status
Probable Cause
Event Type
Accident
Date
March 8, 1993
Injury Outcomes
1 injury (1 serious injury), 1 uninjured
Location
Port Alsworth, AK
Aircraft
Cessna 180H
Tail Number
N9737G
Operator
Hornberger Charles G
Injuries
Serious
Aircraft Damage
Substantial
NTSB Number
ANC93LA041

THE NON INSTRUMENT RATED PRIVATE PILOT REPORTED THAT HE ENTERED WHITEOUT CONDITIONS CAUSED BY BLOWING SNOW SHORTLY AFTER BECOMING AIRBORNE AND UNINTENTIONALLY ALLOWED THE PLANE TO DESCEND AND COLLIDE WITH THE FROZEN SURFACE OF THE LAKE. THE PILOT FURTHER REPORTED THAT HE DID NOT HAVE A CURRENT BIENNIAL FLIGHT REVIEW (BFR) OR FLIGHT MEDICAL AND THAT HE DID NOT RECALL HAVING RECEIVED INSTRUCTION ON HOW TO EXECUTE A 180 DEGREE CHANGE OF DIRECTION TURN USING ONLY THE BASIC (PARTIAL PANEL) FLIGHT INSTRUMENTS.

NTSB Probable Cause

THE NON INSTRUMENT RATED PILOT IN COMMAND ENTERING INSTRUMENT METEOROLOGICAL CONDITIONS. A FACTOR IN THE ACCIDENT WAS THE SNOW/WHITEOUT CONDITION.

Full Narrative

THE NON INSTRUMENT RATED PRIVATE PILOT REPORTED THAT HE ENTERED WHITEOUT CONDITIONS CAUSED BY BLOWING SNOW SHORTLY AFTER BECOMING AIRBORNE AND UNINTENTIONALLY ALLOWED THE PLANE TO DESCEND AND COLLIDE WITH THE FROZEN SURFACE OF THE LAKE. THE PILOT FURTHER REPORTED THAT HE DID NOT HAVE A CURRENT BIENNIAL FLIGHT REVIEW (BFR) OR FLIGHT MEDICAL AND THAT HE DID NOT RECALL HAVING RECEIVED INSTRUCTION ON HOW TO EXECUTE A 180 DEGREE CHANGE OF DIRECTION TURN USING ONLY THE BASIC (PARTIAL PANEL) FLIGHT INSTRUMENTS.

Flight

Event TypeAccident
Event Time10:30 AKST
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftCessna 180H
Tail NumberN9737G
Aircraft CategoryAir
DamageSubstantial
OperatorHornberger Charles G
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · O-470R · Reciprocating · 235
Seats2

People & Injuries

Injury Summary1 injury (1 serious injury), 1 uninjured
Fatal0
Serious1
Minor0
Uninjured1
Total2
Crew 1Age 59 · Third Class

Conditions

ConditionsIMC
LightDaylight
Wind230° @ 10 kt
Visibility2 sm
CeilingOvercast 1000 ft
Temperature / Dew Point30 C / 0 C
Altimeter0
Weather SourcePILO

Appendix: Source Data