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
April 14, 1991 · Grumman American AA-5A · N9763U
Pleasant Valley, NY
Overview
Report Status
Probable Cause
Event Type
Accident
Date
April 14, 1991
Injury Outcomes
1 injury (1 minor injury), 3 uninjured
Location
Pleasant Valley, NY
Aircraft
Grumman American AA-5A
Tail Number
N9763U
Operator
Lesley a Lyons
Injuries
Minor
Aircraft Damage
Destroyed
NTSB Number
NYC91LA113
THE TWO PILOTS AGREED TO FLY TOGETHER AND KEEP IN RADIO CONTACT. AFTER TAKEOFF AND FLYING IN A NORTHERLY DIRECTION, THE CESSNA 172 PILOT SAID HE TURNED TO THE WEST AND WAS STRUCK BY THE GRUMMAN AA5A AFTER 2 3 MINUTES. A GROUND WITNESS AND A WITNESS ON BOARD THE GRUMMAN AA5A SAW THE CESSNA 172 BEHIND THE GRUMMAN. THE SPINNER OF THE CESSNA 172 STRUCK THE LEFT AILERON OF THE GRUMMAN AA5A, AND THE RIGHT WING OF THE CESSNA STRUCK THE HORIZONTAL STABILIZER AND DEFORMED THE RUDDER, ELEVATOR, AND AFT FUSELAGE OF THE GRUMMAN AA5A. THE GRUMMAN AA5A MADE A FORCED LANDING WITH MINIMAL FLIGHT CONTROL IN A WOODED AREA, AND THE CESSNA 172 LANDED AT A NEARBY AIRPORT.
NTSB Probable Cause
THE FAILURE OF THE PILOT OF N5232K TO MAINTAIN VISUAL CONTACT AND SEPARATION WITH N9763U.
Full Narrative
THE TWO PILOTS AGREED TO FLY TOGETHER AND KEEP IN RADIO CONTACT. AFTER TAKEOFF AND FLYING IN A NORTHERLY DIRECTION, THE CESSNA 172 PILOT SAID HE TURNED TO THE WEST AND WAS STRUCK BY THE GRUMMAN AA5A AFTER 2 3 MINUTES. A GROUND WITNESS AND A WITNESS ON BOARD THE GRUMMAN AA5A SAW THE CESSNA 172 BEHIND THE GRUMMAN. THE SPINNER OF THE CESSNA 172 STRUCK THE LEFT AILERON OF THE GRUMMAN AA5A, AND THE RIGHT WING OF THE CESSNA STRUCK THE HORIZONTAL STABILIZER AND DEFORMED THE RUDDER, ELEVATOR, AND AFT FUSELAGE OF THE GRUMMAN AA5A. THE GRUMMAN AA5A MADE A FORCED LANDING WITH MINIMAL FLIGHT CONTROL IN A WOODED AREA, AND THE CESSNA 172 LANDED AT A NEARBY AIRPORT.
Flight
Event TypeAccident
Event Time15:30 EDT
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftGrumman American AA-5A
Tail NumberN9763U
Aircraft CategoryAir
DamageDestroyed
OperatorLesley a Lyons
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-320-E2G · Reciprocating · 150 | Lycoming · O-320-D2J · Reciprocating · 160
Seats4
People & Injuries
Injury Summary1 injury (1 minor injury), 3 uninjured
Fatal0
Serious0
Minor1
Uninjured3
Total4
Crew 1Age 35 · Third Class
Crew 2Age 32 · Third Class
Conditions
ConditionsVMC
LightDaylight
Wind200° @ 12 kt
Visibility30 sm
CeilingBroken clouds 25000 ft
Temperature / Dew Point55 / 34 C
Altimeter30.00 inHg
Observation Time19:50
Weather SourceWFAC