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

December 22, 1986 · Cessna 172M · N64533

Chico, CA

Overview

Report Status
Preliminary report
Event Type
Accident
Date
December 22, 1986
Injury Outcomes
4 injuries (4 minor injuries)
Location
Chico, CA
Aircraft
Cessna 172M
Tail Number
N64533
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
LAX87LA067

DURING AN ILS APCH TO RWY 13L, THE PLT THINKING HE WAS AT THE MISSED APCH POINT COLLIDED WITH THE TERRAIN 200 YRDS WEST OF THE ARPT. THE ROUTE OF FLT WAS DETERMINED TO BE IN A NORTH WESTERLY DIRECTION. EXAM OF THE NAVIGATIONAL INSTRUMENTS REVEALED THAT THE NUMBER TWO NAVIGATIONAL RADIO WAS TUNED TO AN INCORRECT FREQ. THE PLT HAD RETURNED TO THE ACFT AFTER THE ACCIDENT AND TRIED TO MAKE RADIO CONTACT WITH NEARBY FACILITIES. HE DOES NOT REMEMBER IF HE CHANGED THE NAVIGATIONAL FREQS.

Full Narrative

DURING AN ILS APCH TO RWY 13L, THE PLT THINKING HE WAS AT THE MISSED APCH POINT COLLIDED WITH THE TERRAIN 200 YRDS WEST OF THE ARPT. THE ROUTE OF FLT WAS DETERMINED TO BE IN A NORTH WESTERLY DIRECTION. EXAM OF THE NAVIGATIONAL INSTRUMENTS REVEALED THAT THE NUMBER TWO NAVIGATIONAL RADIO WAS TUNED TO AN INCORRECT FREQ. THE PLT HAD RETURNED TO THE ACFT AFTER THE ACCIDENT AND TRIED TO MAKE RADIO CONTACT WITH NEARBY FACILITIES. HE DOES NOT REMEMBER IF HE CHANGED THE NAVIGATIONAL FREQS.

Flight

Event TypeAccident
Event Time22:30 PST
Nearest AirportCHICO (1nm W)
Runway13L
Runway Length6724 ft
Runway Width150 ft
Flight Plan FiledIFR
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftCessna 172M
Tail NumberN64533
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-230-E2D · Reciprocating · 150
Seats4

People & Injuries

Injury Summary4 injuries (4 minor injuries)
Fatal0
Serious0
Minor4
Uninjured0
Total4
Crew 1Age 41 · Third Class

Conditions

ConditionsIMC
LightDark Night
WindCalm
CeilingNone
Temperature / Dew Point41 C / 39 C
Altimeter30.00 inHg
Weather SourceWIT

Appendix: Source Data