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 28, 1991 · Cessna 172M · N9591V
Cadillac, MI
Overview
Report Status
Probable Cause
Event Type
Accident
Date
May 28, 1991
Injury Outcomes
No injuries (2 uninjured)
Location
Cadillac, MI
Aircraft
Cessna 172M
Tail Number
N9591V
Operator
Nortawoods Aviation
Injuries
None
Aircraft Damage
Substantial
NTSB Number
CHI91LA169
THE AIRCRAFT ARRIVED AT THE DESTINATION AIRPORT WHILE A THUNDERSTORM WAS IN PROGRESS. WINDS WERE REPORTED GUSTING TO 43 KNOTS. THE PILOT CARRIED EXCESSIVE AIRSPEED TO COUNTER THE TURBULENCE ON THE APPROACH. THE AIRCRAFT OVERRAN THE RUNWAY ON LANDING. THE AIRCRAFT EXITED THE DEPARTURE END OF THE RUNWAY AND IMPACTED TREES.
NTSB Probable Cause
THE PILOT-IN-COMMAND'S MAINTAINING EXCESSIVE AIRSPEED THROUGH THE LANDING TOUCHDOWN WHICH RESULTED IN OVERRUNNING THE RUNWAY.
Full Narrative
THE AIRCRAFT ARRIVED AT THE DESTINATION AIRPORT WHILE A THUNDERSTORM WAS IN PROGRESS. WINDS WERE REPORTED GUSTING TO 43 KNOTS. THE PILOT CARRIED EXCESSIVE AIRSPEED TO COUNTER THE TURBULENCE ON THE APPROACH. THE AIRCRAFT OVERRAN THE RUNWAY ON LANDING. THE AIRCRAFT EXITED THE DEPARTURE END OF THE RUNWAY AND IMPACTED TREES.
Flight
Event TypeAccident
Event Time18:30 EDT
Nearest AirportCADILLAC (0nm N)
Runway36
Runway Length2005 ft
Runway Width150 ft
Flight Plan FiledIFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna 172M
Tail NumberN9591V
Aircraft CategoryAir
DamageSubstantial
OperatorNortawoods Aviation
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-320-E2D · Reciprocating · 150
Seats4
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 46 · Third Class
Conditions
ConditionsVMC
LightDaylight
Wind330° @ 21 kt, gusting 43 kt
Visibility10 sm
CeilingOvercast 1000 ft
Temperature / Dew Point0 C / 0 C
Altimeter0
Observation Time20:30
Weather SourceWFAC