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

July 7, 1983 · Steen Skybolt · N407L

Denver, IA

Overview

Report Status
Preliminary report
Event Type
Accident
Date
July 7, 1983
Injury Outcomes
1 injury (1 minor injury), 1 uninjured
Location
Denver, IA
Aircraft
Steen Skybolt
Tail Number
N407L
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
MKC83LA147

THE PILOT STATED THAT ON DEPARTURE WHEN THE AIRCRAFT WAS 100 TO 150 FEET ABOVE THE GROUND, THE ENGINE QUIT. HE MADE A LEFT TURN TOWARD MORE SUITABLE TERRAIN AND THE ENGINE STARTED UP AGAIN. BEFORE HE COULD GET SET UP FOR A MORE SUITABLE FIELD, THE ENGINE QUIT AGAIN. THE AIRCRAFT LANDED JUST SHORT OF A ROAD, HIT A DITCH AND FLIPPED FORWARD TO THE INVERTED POSITION. AN INSPECTION OF THE WRECKAGE FOUND THAT THE FUEL TANK VENT PORT IN THE TOP OF THE TANK HAD BEEN PARTIALLY BLOCKED DURING CONSTRUCTION. THE REMAINDER OF THE WRECKAGE DID NOT APPEAR TO HAVE ANY PRE-IMPACT DAMAGE.

Full Narrative

THE PILOT STATED THAT ON DEPARTURE WHEN THE AIRCRAFT WAS 100 TO 150 FEET ABOVE THE GROUND, THE ENGINE QUIT. HE MADE A LEFT TURN TOWARD MORE SUITABLE TERRAIN AND THE ENGINE STARTED UP AGAIN. BEFORE HE COULD GET SET UP FOR A MORE SUITABLE FIELD, THE ENGINE QUIT AGAIN. THE AIRCRAFT LANDED JUST SHORT OF A ROAD, HIT A DITCH AND FLIPPED FORWARD TO THE INVERTED POSITION. AN INSPECTION OF THE WRECKAGE FOUND THAT THE FUEL TANK VENT PORT IN THE TOP OF THE TANK HAD BEEN PARTIALLY BLOCKED DURING CONSTRUCTION. THE REMAINDER OF THE WRECKAGE DID NOT APPEAR TO HAVE ANY PRE-IMPACT DAMAGE.

Flight

Event TypeAccident
Event Time19:50 CDT
Nearest AirportK (1nm N)
Runway18
Runway Length2600 ft
Runway Width160 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftSteen Skybolt
Tail NumberN407L
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-360 · Reciprocating · 180
Seats2

People & Injuries

Injury Summary1 injury (1 minor injury), 1 uninjured
Fatal0
Serious0
Minor1
Uninjured1
Total2
Crew 1Age 52 · Second Class

Conditions

ConditionsVMC
LightDaylight
Wind180° @ 5 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point0 C
Altimeter0
Weather SourcePILO

Appendix: Source Data