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
May 27, 1989 · Holman/Sears HS-1 · N90HS
Rialto, CA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
May 27, 1989
Injury Outcomes
1 injury (1 serious injury)
Location
Rialto, CA
Aircraft
Holman/Sears HS-1
Tail Number
N90HS
Operator
Sears Howard
Injuries
Serious
Aircraft Damage
Substantial
NTSB Number
LAX89DUG04
THE PILOT/CO-OWNER HAD ONLY A GLIDER CERTIFICATE, BUT HE ELECTED TO FLY THE HOME BUILT AIRPLANE ON ITS MAIDEN FLIGHT. AFTER DEPARTING ON RUNWAY 24, HE INITIATED A RIGHT TURN ABOUT 3/4 MILE WEST OF THE AIRPORT. WHILE TURNING AT ABOUT 200 FT AGL, THE AIRPLANE ENTERED A SPIN & IMPACTED THE GROUND IN A VERTICAL DESCENT. AN INVESTIGATION REVEALED THE PILOT HAD ABOUT 82 HRS OF FLIGHT TIME, OF WHICH, APRX 25 HRS WERE IN SINGLE ENGINE AIRPLANES.
NTSB Probable Cause
FAILURE OF THE PILOT TO MAINTAIN SUFFICIENT AIRSPEED, WHILE TURNING AFTER TAKEOFF, WHICH RESULTED IN A STALL/SPIN. CONTRIBUTING FACTORS WERE: IMPROPER PLANNING/DECISION BY THE PILOT BY TEST FLYING AN AIRPLANE THAT HE WAS NOT PROPERLY CERTIFICATED TO OPERATE, HIS LACK OF FAMILIARITY WITH THE AIRCRAFT, AND OVERCONFIDENCE IN HIS PERSONAL ABILITY.
Full Narrative
THE PILOT/CO-OWNER HAD ONLY A GLIDER CERTIFICATE, BUT HE ELECTED TO FLY THE HOME BUILT AIRPLANE ON ITS MAIDEN FLIGHT. AFTER DEPARTING ON RUNWAY 24, HE INITIATED A RIGHT TURN ABOUT 3/4 MILE WEST OF THE AIRPORT. WHILE TURNING AT ABOUT 200 FT AGL, THE AIRPLANE ENTERED A SPIN & IMPACTED THE GROUND IN A VERTICAL DESCENT. AN INVESTIGATION REVEALED THE PILOT HAD ABOUT 82 HRS OF FLIGHT TIME, OF WHICH, APRX 25 HRS WERE IN SINGLE ENGINE AIRPLANES.
Flight
Event TypeAccident
Event Time11:26 PDT
Nearest AirportRIALTO (75nm W)
Runway24
Runway Length4500 ft
Runway Width75 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftHolman/Sears HS-1
Tail NumberN90HS
Aircraft CategoryAir
DamageSubstantial
OperatorSears Howard
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsItal-American · KFM-107E · Reciprocating · 30
Seats1
People & Injuries
Injury Summary1 injury (1 serious injury)
Fatal0
Serious1
Minor0
Uninjured0
Total1
Crew 1Age 51 · Third Class
Conditions
ConditionsVMC
LightDaylight
Wind340° @ 2 kt
Visibility5 sm
CeilingNone
Temperature / Dew Point52
Altimeter29.00 inHg
Observation Time18:55
Weather SourceWFAC