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
June 22, 2009 · Piper L-21B · N10365
Big Beaver, PA
Overview
Report Status
Final with probable cause
Event Type
Accident
Date
June 22, 2009
Injury Outcomes
No injuries (1 uninjured)
Location
Big Beaver, PA
Aircraft
Piper L-21B
Tail Number
N10365
Operator
Air Heritage
Injuries
None
Aircraft Damage
Substantial
NTSB Number
ERA09CA364
According to the pilot of the tailwheel-equipped airplane, he landed on Runway 28. During the rollout, the airplane became "erratic for no apparent reason," veered off the left side of the runway, encountered standing water in the grass and nosed over, damaging the vertical stabilizer. Runway 28 was 4,501 feet long and 100 feet wide. Winds, recorded at the airport 17 minutes after the accident, were from 360 degrees true at 12 knots. A postflight examination of the airplane revealed no preexisting mechanical anomalies.
NTSB Probable Cause
Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Directional control-Not attained/maintained - C
Full Narrative
According to the pilot of the tailwheel-equipped airplane, he landed on runway 28. During the rollout, the airplane became "erratic for no apparent reason," veered off the left side of the runway, encountered standing water in the grass and nosed over, damaging the vertical stabilizer. Runway 28 was 4,501-feet-long and 100-feet-wide. Winds, recorded at the airport 17 minutes after the accident, were from 360 degrees true at 12 knots. A postflight examination of the airplane revealed no preexisiting mechanical anomalies.
Flight
Event TypeAccident
Event Time15:30 EDT
Nearest AirportBeaver County Airport (0nm)
Runway28
Runway Length4501 ft
Runway Width100 ft
Flight Plan FiledNone
Flight Plan ActivatedNo
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftPiper L-21B
Tail NumberN10365
Aircraft CategoryAir
DamageSubstantial
OperatorAir Heritage
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-290 SERIES · Reciprocating · 140
Seats2
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 70 · Second Class · None
Conditions
ConditionsVMC
LightDaylight
Wind360° @ 12 kt
Visibility15 sm
CeilingBroken clouds 2000 ft
Temperature / Dew Point66 F
Altimeter29.85 inHg
Observation Time19:47
Weather SourceWFAC