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
June 14, 1992 · Cessna 210B · N9545X
Belleville, IL
Overview
Report Status
Probable Cause
Event Type
Accident
Date
June 14, 1992
Injury Outcomes
No injuries (1 uninjured)
Location
Belleville, IL
Aircraft
Cessna 210B
Tail Number
N9545X
Operator
Nollau Leland C
Injuries
None
Aircraft Damage
Substantial
NTSB Number
CHI92LA179
THE PILOT STATED THAT AS THE AIRPLANE BEGAN TO CLIMB OUT THERE WAS A LOSS OF ENGINE RPM AND THE ENGINE STARTED TO RUN ROUGH. A POST-ACCIDENT ENGINE RUN-UP WAS CONDUCTED. THE ENGINE STARTED EASILY AND OPERATED NORMALLY AT LOW POWER SETTINGS. AFTER A WARM UP PERIOD THE THROTTLE WAS ADVANCED TO 2500 RPM, AND 'THE ENGINE THEN STARTED TO RUN ROUGH, WITH BLACK SMOKE AND FLAMES COMING OUT THE EXHAUST... .' A FUEL PUMP BENCH TEST REVEALED THE HIGH END DISCHARGE ADJUSTMENT WAS SET HIGHER THAN RECOMMENDED. THE TEST STAND DISCHARGE GAGE PEGGED ON THE HIGH SIDE WHEN THE RPM WAS ADVANCED TO 2600 RPM PER TEST PARAMETERS. THE AIRCRAFT HAD FLOWN 1.1 HOURS SINCE THE ANNUAL INSPECTION WAS COMPLETED 8 MONTHS BEFORE THE ACCIDENT. LOGBOOKS INDICATED THE ENTIRE FUEL SYSTEM WAS REMOVED, OVERHAULED, REINSTALLED AND ADJUSTED IN DECEMBER, 1990, APPROXIMATELY 4 FLIGHT HOURS BEFORE THE ACCIDENT.
NTSB Probable Cause
THE IMPROPER FUEL PUMP HIGH END DISCHARGE ADJUSTMENT. A RELATED FACTOR IS IMPROPER MAINTENANCE/ANNUAL INSPECTION.
Full Narrative
THE PILOT STATED THAT AS THE AIRPLANE BEGAN TO CLIMB OUT THERE WAS A LOSS OF ENGINE RPM AND THE ENGINE STARTED TO RUN ROUGH. A POST-ACCIDENT ENGINE RUN-UP WAS CONDUCTED. THE ENGINE STARTED EASILY AND OPERATED NORMALLY AT LOW POWER SETTINGS. AFTER A WARM UP PERIOD THE THROTTLE WAS ADVANCED TO 2500 RPM, AND 'THE ENGINE THEN STARTED TO RUN ROUGH, WITH BLACK SMOKE AND FLAMES COMING OUT THE EXHAUST... .' A FUEL PUMP BENCH TEST REVEALED THE HIGH END DISCHARGE ADJUSTMENT WAS SET HIGHER THAN RECOMMENDED. THE TEST STAND DISCHARGE GAGE PEGGED ON THE HIGH SIDE WHEN THE RPM WAS ADVANCED TO 2600 RPM PER TEST PARAMETERS. THE AIRCRAFT HAD FLOWN 1.1 HOURS SINCE THE ANNUAL INSPECTION WAS COMPLETED 8 MONTHS BEFORE THE ACCIDENT. LOGBOOKS INDICATED THE ENTIRE FUEL SYSTEM WAS REMOVED, OVERHAULED, REINSTALLED AND ADJUSTED IN DECEMBER, 1990, APPROXIMATELY 4 FLIGHT HOURS BEFORE THE ACCIDENT.
Flight
Event TypeAccident
Event Time15:00 CDT
Nearest AirportFlying Dutchman (1nm E)
Runway9
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna 210B
Tail NumberN9545X
Aircraft CategoryAir
DamageSubstantial
OperatorNollau Leland C
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · IO-470-S · Reciprocating · 260
Seats4
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 63 · Third Class
Conditions
ConditionsVMC
LightDaylight
Wind100°
Visibility5 sm
CeilingNone
Temperature / Dew Point63 F
Altimeter29.00 inHg
Weather SourcePILO