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

May 4, 1991 · Aerospace Tech Of Australia N22B · N5590M

Richardsville, KY

Overview

Report Status
Probable Cause
Event Type
Accident
Date
May 4, 1991
Injury Outcomes
No injuries (2 uninjured)
Location
Richardsville, KY
Aircraft
Aerospace Tech Of Australia N22B
Tail Number
N5590M
Operator
S C Johnson & Son
Injuries
None
Aircraft Damage
Substantial
NTSB Number
BFO91LA047

THE PILOT HAD JUST LEVELED AT FOUR THOUSAND FEET WHEN THE RIGHT ENGINE LOST POWER. HE IMMEDIATELY TURNED BACK TOWARD HIS DEPARTURE FIELD BUT COULD NOT MAINTAIN ALTITUDE WITH THE REMAINING ENGINE. HE THEN ELECTED TO MAKE A GEAR UP LANDING IN AN OPEN FIELD. ON TOUCHDOWN, THE AIRCRAFT SUSTAINED SUBSTANTIAL DAMAGE AS IT CAME TO A STOP IN THE GRASSY FIELD. THE PILOT AND PASSENGER EXITED THROUGH THE FORWARD DOORS WITHOUT FURTHER INCIDENT.

NTSB Probable Cause

THE LOSS OF ENGINE POWER BROUGHT ON BY A FAILURE OF THE NO.2 MAIN ENGINE BEARING. CONTRIBUTING TO THE ACCIDENT WAS THE LACK OF SUFFICIENT POWER ON THE REMAINING ENGINE TO MAINTAIN LEVEL FLIGHT.

Full Narrative

THE PILOT HAD JUST LEVELED AT FOUR THOUSAND FEET WHEN THE RIGHT ENGINE LOST POWER. HE IMMEDIATELY TURNED BACK TOWARD HIS DEPARTURE FIELD BUT COULD NOT MAINTAIN ALTITUDE WITH THE REMAINING ENGINE. HE THEN ELECTED TO MAKE A GEAR UP LANDING IN AN OPEN FIELD. ON TOUCHDOWN, THE AIRCRAFT SUSTAINED SUBSTANTIAL DAMAGE AS IT CAME TO A STOP IN THE GRASSY FIELD. THE PILOT AND PASSENGER EXITED THROUGH THE FORWARD DOORS WITHOUT FURTHER INCIDENT.

Flight

Event TypeAccident
Event Time17:15 EDT
Nearest Airport0nm N
Runway0
Runway Length0
Runway Width0
Flight Plan FiledIFR
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftAerospace Tech Of Australia N22B
Tail NumberN5590M
Aircraft CategoryAir
DamageSubstantial
OperatorS C Johnson & Son
Operating RulePart 91
Engines2
Engine TypeReciprocating
Engine DetailsAllison · 250-C17B · Reciprocating · 420
Seats8

People & Injuries

Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 43 · First Class

Conditions

ConditionsVMC
LightDaylight
Wind160° @ 9 kt
Visibility7 sm
CeilingBroken clouds 2000 ft
Temperature / Dew Point66 F
Altimeter29.00 inHg
Observation Time23:50
Weather SourceWFAC

Appendix: Source Data