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 31, 1983 · Maule M-5-220C · N51637

Holyoke, CO

Overview

Report Status
Preliminary report
Event Type
Accident
Date
December 31, 1983
Injury Outcomes
No injuries (2 uninjured)
Location
Holyoke, CO
Aircraft
Maule M-5-220C
Tail Number
N51637
Injuries
None
Aircraft Damage
Substantial
NTSB Number
DEN84LA057

THE ACFT RAN OFF THE RWY DURING LANDING AND NOSED OVER. THE PLT STATED THAT THE ACCIDENT OCCURRED DURING A LANDING ON RWY 17. THE WIND WAS REPORTED AS FROM THE SOUTHWEST AT FOUR KTS. THE PLT STATED THAT THE GLIDE PATH AND AIRSPEED WERE GOOD ON FINAL APPROACH. DURING TOUCHDOWN THE ACFT BOUNCED AND WENT OFF THE RWY. THE PLT WAS A FLT INSTRUCTOR, HAD 3800 FLYING HOURS AND MADE APPROX 200 LANDINGS IN THE LAST 90 DAYS. HE WAS ACTING AS PIC ON THIS FLT FOR THE ACFT OWNER WHO WAS A PASSENGER.

Full Narrative

THE ACFT RAN OFF THE RWY DURING LANDING AND NOSED OVER. THE PLT STATED THAT THE ACCIDENT OCCURRED DURING A LANDING ON RWY 17. THE WIND WAS REPORTED AS FROM THE SOUTHWEST AT FOUR KTS. THE PLT STATED THAT THE GLIDE PATH AND AIRSPEED WERE GOOD ON FINAL APPROACH. DURING TOUCHDOWN THE ACFT BOUNCED AND WENT OFF THE RWY. THE PLT WAS A FLT INSTRUCTOR, HAD 3800 FLYING HOURS AND MADE APPROX 200 LANDINGS IN THE LAST 90 DAYS. HE WAS ACTING AS PIC ON THIS FLT FOR THE ACFT OWNER WHO WAS A PASSENGER.

Flight

Event TypeAccident
Event Time19:10 MST
Nearest AirportHOLYOKE (0nm N)
Runway17
Runway Length3600 ft
Runway Width60 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftMaule M-5-220C
Tail NumberN51637
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsFranklin · 6A-350-C1 · Reciprocating · 220

People & Injuries

Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 35 · Second Class

Conditions

ConditionsVMC
LightDark Night
Wind200° @ 4 kt
Visibility20 sm
CeilingNone
Temperature / Dew Point16 C / 0 C
Altimeter0
Weather SourcePILO

Appendix: Source Data