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
July 28, 1991 · Beech C24R · N6713P
Morrisville, NC
Overview
Report Status
Probable Cause
Event Type
Accident
Date
July 28, 1991
Injury Outcomes
No injuries (1 uninjured)
Location
Morrisville, NC
Aircraft
Beech C24R
Tail Number
N6713P
Operator
Business Insurance Mgmt
Injuries
None
Aircraft Damage
Substantial
NTSB Number
ATL91LA144
THE PILOT WAS UNABLE TO EXTEND THE LEFT MAIN LANDING GEAR. AFTER ABOUT 40 MINUTES OF CIRCLING TO REDUCE THE FUEL IN THE AIRPLANE, AN INTENTIONAL GEAR UP LANDING WAS MADE. SUBSEQUENT EXAMINATION OF THE LANDING GEAR REVEALED THAT THE LEFT UPLOCK CYLINDER HAD FAILED INTERNALLY. THE FAILURE PRECLUDED MOVEMENT OF THE UPLOCK CYLINDER AND EXTENSION OF THE LEFT MAIN WHEEL.
NTSB Probable Cause
FAILURE OF THE LEFT MAIN LANDING GEAR UPLOCK CYLINDER WHICH PRECLUDED EXTENSION OF THE LANDING GEAR.
Full Narrative
THE PILOT WAS UNABLE TO EXTEND THE LEFT MAIN LANDING GEAR. AFTER ABOUT 40 MINUTES OF CIRCLING TO REDUCE THE FUEL IN THE AIRPLANE, AN INTENTIONAL GEAR UP LANDING WAS MADE. SUBSEQUENT EXAMINATION OF THE LANDING GEAR REVEALED THAT THE LEFT UPLOCK CYLINDER HAD FAILED INTERNALLY. THE FAILURE PRECLUDED MOVEMENT OF THE UPLOCK CYLINDER AND EXTENSION OF THE LEFT MAIN WHEEL.
Flight
Event TypeAccident
Event Time18:15 EDT
Nearest AirportRaleigh-Durham Int'L (0nm)
Runway32
Runway Length4498 ft
Runway Width100 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBeech C24R
Tail NumberN6713P
Aircraft CategoryAir
DamageSubstantial
OperatorBusiness Insurance Mgmt
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · IO-360-A1B6 · Reciprocating · 200
Seats4
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 49 · First Class
Conditions
ConditionsVMC
LightDaylight
Wind360° @ 10 kt
Visibility3 sm
CeilingBroken clouds 1800 ft
Altimeter30.00 inHg
Observation Time21:50
Weather SourceWFAC