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
September 23, 1992 · Mcdonnell Douglas DC 10-10 · N1845U
San Francisco, CA
Overview
Report Status
Preliminary report
Event Type
Incident
Date
September 23, 1992
Injury Outcomes
No injuries (235 uninjured)
Location
San Francisco, CA
Aircraft
Mcdonnell Douglas DC 10-10
Tail Number
N1845U
Operator
United Airlines
Injuries
None
Aircraft Damage
Minor
NTSB Number
LAX92IA397
A MCDONNELL DOUGLAS AIRCRAFT COMPANY DC 10 SERIES 10 AIRCRAFT EXPERIENCED AN UNCONTAINED FAILURE OF THE NUMBER 1 ENGINE WHILE IN THE CRUISE CLIMB. THE ENGINE HAD SUSTAINED AN UNCONTAINED FAILURE OF THE 14TH THROUGH 16TH STAGE COMPRESSOR SPOOL. ABOUT 11 YEARS BEFORE THE INCIDENT, THE SPOOL WAS DAMAGED BEYOND MAINTENANCE MANUAL LIMITS. THE DAMAGE CONSISTED OF A 360 DEGREE RUB ON THE AFT RIM SURFACE (SURFACE Q) OF THE 16TH STAGE COMPRESSOR. THE SPOOL WAS PLACED IN STORAGE FOR FIVE YEARS AND THEN RETURNED TO SERVICE AFTER BEING REPAIRED. FLIGHT PROFILE STRESSES WERE ANALYZED BY ENGINE MANUFACTURER. ACCORDING TO THE ENGINE MANUFACTURER, PEAK STRESSES IN THE AFT RIM REGION OR SURFACE Q OCCUR AT THE SAME TIME IN THE FLIGHT PROFILE AS THE UNCONTAINED FAILURE.
Full Narrative
A MCDONNELL DOUGLAS AIRCRAFT COMPANY DC 10 SERIES 10 AIRCRAFT EXPERIENCED AN UNCONTAINED FAILURE OF THE NUMBER 1 ENGINE WHILE IN THE CRUISE CLIMB. THE ENGINE HAD SUSTAINED AN UNCONTAINED FAILURE OF THE 14TH THROUGH 16TH STAGE COMPRESSOR SPOOL. ABOUT 11 YEARS BEFORE THE INCIDENT, THE SPOOL WAS DAMAGED BEYOND MAINTENANCE MANUAL LIMITS. THE DAMAGE CONSISTED OF A 360 DEGREE RUB ON THE AFT RIM SURFACE (SURFACE Q) OF THE 16TH STAGE COMPRESSOR. THE SPOOL WAS PLACED IN STORAGE FOR FIVE YEARS AND THEN RETURNED TO SERVICE AFTER BEING REPAIRED. FLIGHT PROFILE STRESSES WERE ANALYZED BY ENGINE MANUFACTURER. ACCORDING TO THE ENGINE MANUFACTURER, PEAK STRESSES IN THE AFT RIM REGION OR SURFACE Q OCCUR AT THE SAME TIME IN THE FLIGHT PROFILE AS THE UNCONTAINED FAILURE.
Flight
Event TypeIncident
Event Time09:22 PDT
Nearest Airport0nm N
Runway0
Flight Plan FiledIFR
Aircraft FireIflt
Aircraft ExplosionNo
Aircraft
AircraftMcdonnell Douglas DC 10-10
Tail NumberN1845U
Aircraft CategoryAir
DamageMinor
OperatorUnited Airlines
Operating RulePart 121
Engines3
Engine TypeTurbofan
Engine DetailsGe · CF6-6D · Turbofan · 40000
Seats287
People & Injuries
Injury SummaryNo injuries (235 uninjured)
Fatal0
Serious0
Minor0
Uninjured235
Total235
Crew 1Age 57 · First Class
Conditions
ConditionsVMC
LightDaylight
Wind310° @ 8 kt
Visibility3 sm
CeilingNone
Temperature / Dew Point61 F / 57
Altimeter30.00 inHg
Observation Time16:36
Weather SourceWFAC