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
October 14, 1990 · Piper PA-28-180 · N4924L
Mullan, ID
Overview
Report Status
Probable Cause
Event Type
Accident
Date
October 14, 1990
Injury Outcomes
1 injury (1 fatality)
Location
Mullan, ID
Aircraft
Piper PA-28-180
Tail Number
N4924L
Operator
Allen D Harris Jr
Injuries
Fatal
Aircraft Damage
Destroyed
NTSB Number
SEA91FA144
THE AIRCRAFT WAS ON A VFR FLIGHT FROM BOZEMAN, MT, TO SPOKANE, WA. THE LAST COMMUNICATIONS WITH THE AIRCRAFT WERE WHEN IT CROSSED MISSOULA, MT. THE WRECKAGE WAS FOUND LATER NEAR THE SUMMIT OF LOST TRAIL PASS, NEAR MULLAN, ID. MOUNTAIN TOPS WERE REPORTED OBSCURED DURING THE APPROXIMATE TIME FRAME THAT THE AIRCRAFT WOULD HAVE BEEN IN THE VICINITY. NO PREIMPACT PART FAILURE OF THE AIRCRAFT/ENGINE WAS REPORTED.
NTSB Probable Cause
THE PILOT'S VFR FLIGHT INTO INSTRUMENT METEOROLOGICAL CONDITIONS (IMC). THE ADVERSE WEATHER AND TERRAIN CONDITIONS WERE RELATED FACTORS.
Full Narrative
THE AIRCRAFT WAS ON A VFR FLIGHT FROM BOZEMAN, MT, TO SPOKANE, WA. THE LAST COMMUNICATIONS WITH THE AIRCRAFT WERE WHEN IT CROSSED MISSOULA, MT. THE WRECKAGE WAS FOUND LATER NEAR THE SUMMIT OF LOST TRAIL PASS, NEAR MULLAN, ID. MOUNTAIN TOPS WERE REPORTED OBSCURED DURING THE APPROXIMATE TIME FRAME THAT THE AIRCRAFT WOULD HAVE BEEN IN THE VICINITY. NO PREIMPACT PART FAILURE OF THE AIRCRAFT/ENGINE WAS REPORTED.
Flight
Event TypeAccident
Event Time15:00 MDT
Nearest Airport0nm N
Runway0
Runway Length0
Runway Width0
Flight Plan FiledVFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftPiper PA-28-180
Tail NumberN4924L
Aircraft CategoryAir
DamageDestroyed
OperatorAllen D Harris Jr
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-360-A4A · Reciprocating · 180
Seats4
People & Injuries
Injury Summary1 injury (1 fatality)
Fatal1
Serious0
Minor0
Uninjured0
Total1
Crew 1Age 42 · Third Class
Conditions
ConditionsIMC
LightDaylight
WindCalm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter0
Observation Time20:54
Weather SourceWFAC