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
December 1, 1982 · Cessna P210 · N4721P
Sioux Falls, SD
Overview
Report Status
Preliminary report
Event Type
Accident
Date
December 1, 1982
Injury Outcomes
3 injuries (2 fatalities, 1 serious injury)
Location
Sioux Falls, SD
Aircraft
Cessna P210
Tail Number
N4721P
Operator
Robert G Ocheltree
Injuries
Fatal
Aircraft Damage
Destroyed
NTSB Number
DEN83FA027
AT 1915 WHILE ENROUTE THE PLT WAS ADVISED THAT THE DESTINATION WX WAS 100 FT OBSCURED, 3/8 MI IN FOG. AT 2140 THE PLT CONTACTED APPROACH CONTROL & WAS ADVISED THE WX WAS 100 FT OBSCURED & 1/8 MI WITH AN RVR FOR RWY 3 OF 2,400 FT. HE WAS CLEARED FOR AN ILS RWY 3 APPROACH & ADVISED THE RVR WAS NOW 1,600 FT. DURING THE APPROACH THE PLT WAS ADVISED TWICE OF BEING FIRST RIGHT OF COURSE & THEN LEFT OF COURSE. AT ABOUT 2207 THE PLT EXECUTED A MISSED APPROACH & AT 2217 WAS CLEARED FOR A SECOND APPROACH. DURING THE SECOND APPROACH THE PLT WAS AGAIN ADVISED OF GOING LEFT OF COURSE. THE ACFT CRASHED APPROXIMATELY 1,250 FT LEFT OF THE LOCALIZER COURSE & APPROXIMATELY 3,250 FT PAST THE THRESHOLD TO RWY 3.
Full Narrative
AT 1915 WHILE ENROUTE THE PLT WAS ADVISED THAT THE DESTINATION WX WAS 100 FT OBSCURED, 3/8 MI IN FOG. AT 2140 THE PLT CONTACTED APPROACH CONTROL & WAS ADVISED THE WX WAS 100 FT OBSCURED & 1/8 MI WITH AN RVR FOR RWY 3 OF 2,400 FT. HE WAS CLEARED FOR AN ILS RWY 3 APPROACH & ADVISED THE RVR WAS NOW 1,600 FT. DURING THE APPROACH THE PLT WAS ADVISED TWICE OF BEING FIRST RIGHT OF COURSE & THEN LEFT OF COURSE. AT ABOUT 2207 THE PLT EXECUTED A MISSED APPROACH & AT 2217 WAS CLEARED FOR A SECOND APPROACH. DURING THE SECOND APPROACH THE PLT WAS AGAIN ADVISED OF GOING LEFT OF COURSE. THE ACFT CRASHED APPROXIMATELY 1,250 FT LEFT OF THE LOCALIZER COURSE & APPROXIMATELY 3,250 FT PAST THE THRESHOLD TO RWY 3.
Flight
Event TypeAccident
Event Time22:22 CST
Nearest AirportJoe Foss Field (0nm N)
Runway3
Runway Length8999 ft
Runway Width150 ft
Flight Plan FiledIFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna P210
Tail NumberN4721P
Aircraft CategoryAir
DamageDestroyed
OperatorRobert G Ocheltree
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · TSIO-520-P · Reciprocating · 310
Seats6
People & Injuries
Injury Summary3 injuries (2 fatalities, 1 serious injury)
Fatal2
Serious1
Minor0
Uninjured0
Total3
Crew 1Age 56 · Second Class
Conditions
ConditionsIMC
LightDark Night
Wind150° @ 10 kt
Ceiling100 ft
Temperature / Dew Point0 C
Altimeter29.00 inHg
Observation Time22:26