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

August 21, 1984 · Piper PA-25-235 · N6474L

Shelley, ID

Overview

Report Status
Preliminary report
Event Type
Accident
Date
August 21, 1984
Injury Outcomes
1 injury (1 serious injury)
Location
Shelley, ID
Aircraft
Piper PA-25-235
Tail Number
N6474L
Operator
William a Christenson
Injuries
Serious
Aircraft Damage
Destroyed
NTSB Number
SEA84LA208

THE PILOT INDICATED THAT HE WAS EN ROUTE TO SPRAY A LOCAL FIELD WHEN THE ENGINE BEGAN TO RUN ROUGH. HE DIVERTED TO AN AG STRIP NEARBY, BUT THE ENGINE CEASED OPERATION PRIOR TO REACHING THE STRIP. THE AIRCRAFT STRUCK AN IRRIGATION PIVOT DURING THE FORCED LANDING. THE AIRCRAFT WAS CONSUMED BY A POST CRASH FIRE. NO REASON FOR THE ENGINE FAILURE COULD BE DETERMINED.

Full Narrative

THE PILOT INDICATED THAT HE WAS EN ROUTE TO SPRAY A LOCAL FIELD WHEN THE ENGINE BEGAN TO RUN ROUGH. HE DIVERTED TO AN AG STRIP NEARBY, BUT THE ENGINE CEASED OPERATION PRIOR TO REACHING THE STRIP. THE AIRCRAFT STRUCK AN IRRIGATION PIVOT DURING THE FORCED LANDING. THE AIRCRAFT WAS CONSUMED BY A POST CRASH FIRE. NO REASON FOR THE ENGINE FAILURE COULD BE DETERMINED.

Flight

Event TypeAccident
Event Time13:40 MDT
Nearest Airport0nm
Runway0
Flight Plan FiledNone
Aircraft FireGrd
Aircraft ExplosionGrd

Aircraft

AircraftPiper PA-25-235
Tail NumberN6474L
Aircraft CategoryAir
DamageDestroyed
OperatorWilliam a Christenson
Operating RulePart 137
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-540-B2B5 · Reciprocating · 235
Seats1

People & Injuries

Injury Summary1 injury (1 serious injury)
Fatal0
Serious1
Minor0
Uninjured0
Total1
Crew 1Age 33 · Second Class

Conditions

ConditionsVMC
LightDaylight
WindCalm
Visibility40 sm
CeilingNone
Temperature / Dew Point0 C
Altimeter0
Weather SourcePILO

Appendix: Source Data