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
November 28, 1988 · Mcdonnell Douglas 269C · N1098P
Frankfort, IL
Overview
Report Status
Preliminary report
Event Type
Accident
Date
November 28, 1988
Injury Outcomes
1 injury (1 minor injury), 1 uninjured
Location
Frankfort, IL
Aircraft
Mcdonnell Douglas 269C
Tail Number
N1098P
Operator
Eagle Air Helicopters
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
CHI89LA029
THE HELICOPTER EXPERIENCED A TREE STRIKE WITH THE MAIN ROTOR BLADES AND THEN ROLLED OVER WHEN IT STRUCK THE GROUND DURING A PRECAUTIONARY LANDING ATTEMPT. THE HELICOPTER HAD BEEN CONDUCTING CONTRACT POWER LINE PATROL WHEN THE PIC NOTED AN APPARENT PARTIAL POWER LOSS DURING A LOW ALTITUDE, LOW AIRSPEED TURN. THE PIC HAD NOTED ENGINE RPM BETWEEN 2500-2600 WITH NO NEEDLE SPLIT WHEN HE ELECTED TO ATTEMPT THE LANDING. THE ENG OPERATED NORMALLY AFTERWARD.
Full Narrative
THE HELICOPTER EXPERIENCED A TREE STRIKE WITH THE MAIN ROTOR BLADES AND THEN ROLLED OVER WHEN IT STRUCK THE GROUND DURING A PRECAUTIONARY LANDING ATTEMPT. THE HELICOPTER HAD BEEN CONDUCTING CONTRACT POWER LINE PATROL WHEN THE PIC NOTED AN APPARENT PARTIAL POWER LOSS DURING A LOW ALTITUDE, LOW AIRSPEED TURN. THE PIC HAD NOTED ENGINE RPM BETWEEN 2500-2600 WITH NO NEEDLE SPLIT WHEN HE ELECTED TO ATTEMPT THE LANDING. THE ENG OPERATED NORMALLY AFTERWARD.
Flight
Event TypeAccident
Event Time10:15 CST
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftMcdonnell Douglas 269C
Tail NumberN1098P
Aircraft CategoryHeli
DamageSubstantial
OperatorEagle Air Helicopters
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · HI0-360-D1A · Reciprocating · 190
Seats3
People & Injuries
Injury Summary1 injury (1 minor injury), 1 uninjured
Fatal0
Serious0
Minor1
Uninjured1
Total2
Crew 1Age 44 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind270° @ 13 kt
Visibility8 sm
CeilingOvercast 20000 ft
Temperature / Dew Point28 C / 0 C
Altimeter0
Weather SourcePILO