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
June 1, 1990 · Cessna 152 · N89834
Longmont, CO
Overview
Report Status
Probable Cause
Event Type
Accident
Date
June 1, 1990
Injury Outcomes
2 injuries (1 fatality, 1 minor injury)
Location
Longmont, CO
Aircraft
Cessna 152
Tail Number
N89834
Operator
Judson Flying Service
Injuries
Fatal
Aircraft Damage
Destroyed
NTSB Number
DEN90FA119
AT THE COMPLETION OF AN INSTRUCTIONAL FLIGHT DURING FINAL APPROACH FOR LANDING THE AIRCRAFT ENCOUNTERED WINDSHEAR/MICROBURST ACTIVITY AND A GO-AROUND WAS INITIATED. AT THE INTITIATION OF THE GO-AROUND THE FLAPS WERE RAISED FROM FULL DEPLOYMENT TO UP, CONTRARY TO PUBLISHED PROCEDURES. THE AIRCRAFT SETTLED AND STRUCK A TREE. THE FLIGHT INSTRUCTOR SUSTAINED MINOR INJURIES IN THE ACCIDENT AND THE STUDENT PILOT FATAL INJURIES. THE AIRCRAFT WAS DESTROYED. THE FLIGHT INSTRUCTOR WAS AWARE OF ADVISORY CIRCULARS CONCERNING WINDSHEAR BUT DID NOT HAVE A WORKING KNOWLEDGE. JUST PRIOR TO THE ACCIDENT A PIREP WAS MADE WARNING OF HIGH WIND, WINDSHEAR, AND STRONG DOWN DRAFTS. ACCORDING TO THE NATIONAL CENTER FOR ATMOSPHERIC RESEARCH, A MICROBURST GUST FRONT PASSED THROUGH THE AIRPORT BETWEEN 1844 AND 1846.
NTSB Probable Cause
THE PILOT CONTINUED INTO HAZARDOUS WEATHER CONDITIONS.
Full Narrative
AT THE COMPLETION OF AN INSTRUCTIONAL FLIGHT DURING FINAL APPROACH FOR LANDING THE AIRCRAFT ENCOUNTERED WINDSHEAR/MICROBURST ACTIVITY AND A GO-AROUND WAS INITIATED. AT THE INTITIATION OF THE GO-AROUND THE FLAPS WERE RAISED FROM FULL DEPLOYMENT TO UP, CONTRARY TO PUBLISHED PROCEDURES. THE AIRCRAFT SETTLED AND STRUCK A TREE. THE FLIGHT INSTRUCTOR SUSTAINED MINOR INJURIES IN THE ACCIDENT AND THE STUDENT PILOT FATAL INJURIES. THE AIRCRAFT WAS DESTROYED. THE FLIGHT INSTRUCTOR WAS AWARE OF ADVISORY CIRCULARS CONCERNING WINDSHEAR BUT DID NOT HAVE A WORKING KNOWLEDGE. JUST PRIOR TO THE ACCIDENT A PIREP WAS MADE WARNING OF HIGH WIND, WINDSHEAR, AND STRONG DOWN DRAFTS. ACCORDING TO THE NATIONAL CENTER FOR ATMOSPHERIC RESEARCH, A MICROBURST GUST FRONT PASSED THROUGH THE AIRPORT BETWEEN 1844 AND 1846.
Flight
Event TypeAccident
Event Time18:45 MDT
Nearest AirportVance Brand (0nm N)
Runway0
Runway Length0
Runway Width0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna 152
Tail NumberN89834
Aircraft CategoryAir
DamageDestroyed
OperatorJudson Flying Service
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-235-L2C · Reciprocating · 110
Seats2
People & Injuries
Injury Summary2 injuries (1 fatality, 1 minor injury)
Fatal1
Serious0
Minor1
Uninjured0
Total2
Crew 1Age 31 · Second Class
Conditions
ConditionsVMC
LightDusk
Wind320° @ 10 kt, gusting 15 kt
Visibility40 sm
CeilingBroken clouds 20000 ft
Temperature / Dew Point70 F / 46
Altimeter29.00 inHg
Observation Time00:00
Weather SourceWFAC