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

February 8, 2012 · Maule MX-7-235 · N5664N

Tea, SD

Overview

Report Status
Final with probable cause
Event Type
Accident
Date
February 8, 2012
Injury Outcomes
No injuries (1 uninjured)
Location
Tea, SD
Aircraft
Maule MX-7-235
Tail Number
N5664N
Operator
Alvine Frank G
Injuries
None
Aircraft Damage
Substantial
NTSB Number
CEN12CA159

The pilot reported that he landed the tailwheel-equipped airplane on runway 34 and that the wind was from about 270 degrees at 5 knots. During the landing roll, the airplane was traveling about 15 mph when the left wing suddenly lifted up about 60 degrees, and the right wing struck the runway. The airplane tipped up on its nose, and the propeller struck the ground. Postaccident inspection of the airplane revealed substantial damage to the right wing. The pilot reported that there was no mechanical malfunction or failure of the airplane.

NTSB Probable Cause

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

Full Narrative

The pilot reported that he landed the tailwheel equipped airplane on runway 34 and that the wind was about 270 degrees at 5 knots. During landing roll out the airplane was traveling about 15 mph when the left wing suddenly lifted up about 60 degrees and the right wing struck the runway. The airplane tipped up on its nose and it had a propeller strike. The postaccident inspection of the airplane revealed substantial damage to the right wing. The pilot reported that there was no mechanical malfunction or failure of the airplane.

Flight

Event TypeAccident
Event Time13:00 CST
Nearest AirportLincoln County Airport (0nm)
Runway34
Runway Length3560 ft
Runway Width60 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftMaule MX-7-235
Tail NumberN5664N
Aircraft CategoryAir
DamageSubstantial
OperatorAlvine Frank G
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · IO-540-W1A5D · Reciprocating · 235
Seats5

People & Injuries

Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 74 · Third Class

Conditions

ConditionsVMC
LightDaylight
Wind230° @ 6 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point27 C / 9 C
Altimeter30.37 inHg
Observation Time18:56
Weather SourceWFAC

Appendix: Source Data