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
December 16, 1984 · Mooney M20J · N4812H
Grand Canyon, AZ
Overview
Report Status
Preliminary report
Event Type
Accident
Date
December 16, 1984
Injury Outcomes
4 injuries (4 fatalities)
Location
Grand Canyon, AZ
Aircraft
Mooney M20J
Tail Number
N4812H
Injuries
Fatal
Aircraft Damage
Destroyed
NTSB Number
LAX85FA073
THE PLT RECEIVED A WX BRIEFING AND WAS ADVISED OF MODERATE RIME AND MIXED ICING IN CLOUDS. HE FILED AN IFR FLT PLAN AND DEPARTED. WHILE AT 12000 FT, HE REPORTED ENCOUNTERING SEVERE RIME ICE AND REQUESTED A LOWER ALTITUDE. HE STATED THATHE WAS TRYING TO FLING OFF PROPELLER ICE WHEN RADAR AND RADIO CONTACT WERE LOST. THE WRECKAGE WAS LOCATED IN REMOTE MOUNTAINOUS TERRAIN BY A GROUND PARTY DIRECTED TO THE SITE BY AN AIR FORCE ACFT WHICH MONITERED A ELT SIGNAL.
Full Narrative
THE PLT RECEIVED A WX BRIEFING AND WAS ADVISED OF MODERATE RIME AND MIXED ICING IN CLOUDS. HE FILED AN IFR FLT PLAN AND DEPARTED. WHILE AT 12000 FT, HE REPORTED ENCOUNTERING SEVERE RIME ICE AND REQUESTED A LOWER ALTITUDE. HE STATED THATHE WAS TRYING TO FLING OFF PROPELLER ICE WHEN RADAR AND RADIO CONTACT WERE LOST. THE WRECKAGE WAS LOCATED IN REMOTE MOUNTAINOUS TERRAIN BY A GROUND PARTY DIRECTED TO THE SITE BY AN AIR FORCE ACFT WHICH MONITERED A ELT SIGNAL.
Flight
Event TypeAccident
Event Time06:40 MST
Nearest Airport0nm N
Runway0
Runway Length0
Runway Width0
Flight Plan FiledIFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftMooney M20J
Tail NumberN4812H
Aircraft CategoryAir
DamageDestroyed
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · IO-360-A3B6D · Reciprocating · 200
Seats4
People & Injuries
Injury Summary4 injuries (4 fatalities)
Fatal4
Serious0
Minor0
Uninjured0
Total4
Crew 1Age 42 · First Class
Conditions
ConditionsUnknown
LightDark Night
WindCalm
Visibility15 sm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter0
Observation Time12:53
Weather SourceWFAC