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
Featured Report

Loading…

Loading featured report…

Loading…
Open 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…

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 manufacturers

Airports

More airports

Operators

More operators

About

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 15, 2021 · Piper PA-22-160 · N3551Z

Cottonwood, AZ

Overview

Report Status
Probable Cause
Event Type
Accident
Date
April 15, 2021
Injury Outcomes
No injuries (1 uninjured)
Location
Cottonwood, AZ
Aircraft
Piper PA-22-160
Tail Number
N3551Z
Injuries
None
Aircraft Damage
Substantial
NTSB Number
WPR21LA160

The pilot of a tailwheel equipped airplane reported that, during the landing roll, while adjusting the flap handle, he briefly stepped on the right rudder and the airplane veered to the right. While attempting to correct with left rudder input, the airplane continued to veer to the right, exited the runway, ground looped to the right and collapsed the left main landing gear. The airplane sustained substantial damage to the left wing. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

NTSB Probable Cause

Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Directional control-Not attained/maintained

Full Narrative

The pilot of a tailwheel equipped airplane reported that, during the landing roll, while adjusting the flap handle, he briefly stepped on the right rudder and the airplane veered to the right. While attempting to correct with left rudder input, the airplane continued to veer to the right, exited the runway, ground looped to the right and collapsed the left main landing gear. The airplane sustained substantial damage to the left wing. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

Flight

Event TypeAccident
Event Time10:00 MST
Nearest AirportCottonwood (0nm N)
Runway14/3
Runway Length4252 ft
Runway Width75 ft
Flight Plan FiledNone
Flight Plan ActivatedNo
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftPiper PA-22-160
Tail NumberN3551Z
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-320 SERIES · Reciprocating · 160
Seats2

People & Injuries

Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 55 · Third Class · None

Conditions

ConditionsVMC
LightDaylight
Wind230° @ 8 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point59 / 10 C
Altimeter29.95 inHg
Observation Time09:53
Weather SourceWFAC

Appendix: Source Data