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
July 10, 1991 · E C Trynka Pietenpol Aircamper Pietenpol · N64661
Skull Valley, AZ
Overview
Report Status
Probable Cause
Event Type
Accident
Date
July 10, 1991
Injury Outcomes
1 injury (1 fatality)
Location
Skull Valley, AZ
Aircraft
E C Trynka Pietenpol Aircamper Pietenpol
Tail Number
N64661
Operator
Russell Aley V
Injuries
Fatal
Aircraft Damage
Destroyed
NTSB Number
LAX91LA303
THE PILOT TOOK OFF FROM AN AIRPORT AND REPORTEDLY TURNED DOWNWIND AT ABOUT 400 FEET AGL. WITNESSES REPORTED THAT THE AIRCRAFT APPEARED TO BE IN A 'STEEP' BANK. THEY SAID THAT THE AIRCRAFT 'APPEARED TO FALL OFF ON THE LEFT WING AND SPIN INTO THE GROUND.' AN FAA AIRWORTHINESS INSPECTOR EXAMINED THE AIRCRAFT ON SCENE AND REPORTED THAT NO DISCREPANCIES COULD BE FOUND THAT WOULD HAVE HAMPERED THE AIRCRAFT'S ABILITY TO FLY AND MAINTAIN ALTITUDE. THE PILOT'S RECENT AERONAUTICAL EXPERIENCE COULD NOT BE DETERMINED. HIS MEDICAL CERTIFICATE WAS EXPIRED.
NTSB Probable Cause
THE PILOT INADVERTENTLY INDUCING A STALL SPIN CONDITION WITH INSUFFICIENT ALTITUDE TO RECOVER FROM THE SPIN.
Full Narrative
THE PILOT TOOK OFF FROM AN AIRPORT AND REPORTEDLY TURNED DOWNWIND AT ABOUT 400 FEET AGL. WITNESSES REPORTED THAT THE AIRCRAFT APPEARED TO BE IN A 'STEEP' BANK. THEY SAID THAT THE AIRCRAFT 'APPEARED TO FALL OFF ON THE LEFT WING AND SPIN INTO THE GROUND.' AN FAA AIRWORTHINESS INSPECTOR EXAMINED THE AIRCRAFT ON SCENE AND REPORTED THAT NO DISCREPANCIES COULD BE FOUND THAT WOULD HAVE HAMPERED THE AIRCRAFT'S ABILITY TO FLY AND MAINTAIN ALTITUDE. THE PILOT'S RECENT AERONAUTICAL EXPERIENCE COULD NOT BE DETERMINED. HIS MEDICAL CERTIFICATE WAS EXPIRED.
Flight
Event TypeAccident
Event Time17:00 MST
Nearest Airport0nm
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftE C Trynka Pietenpol Aircamper Pietenpol
Tail NumberN64661
Aircraft CategoryAir
DamageDestroyed
OperatorRussell Aley V
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsCorvair · HPE · Reciprocating · 110
Seats2
People & Injuries
Injury Summary1 injury (1 fatality)
Fatal1
Serious0
Minor0
Uninjured0
Total1
Crew 1Age 54 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind350° @ 10 kt, gusting 15 kt
Visibility55 sm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter0
Observation Time23:51
Weather SourceWFAC