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

November 10, 1983 · Teman Mono-Fly · UNREG

Congress, AZ

Overview

Report Status
Preliminary report
Event Type
Accident
Date
November 10, 1983
Injury Outcomes
1 injury (1 serious injury)
Location
Congress, AZ
Aircraft
Teman Mono-Fly
Tail Number
UNREG
Operator
Lester Ralph Pack
Injuries
Serious
Aircraft Damage
Substantial
NTSB Number
LAX84FU021

REPORTEDLY, THE PLT WAS ON HIS 1ST FLT IN THE ULTRALIGHT VEHICLE AFTER HE HAD BEEN TAXIING IT DURING THE PREVIOUS WEEK. DURING TAKEOFF FROM A RANCH, THE VEHICLE COLLIDED WITH THE GROUND. ACCORDING TO THE DEPUTY SHERIFF, WHO RESPONDED TO THE SCENE, THE PLT STATED THAT THE CONTROLS FAILED TO RESPOND & HE WAS UNABLE TO LEVEL THE VEHICLE FROM A LEFT BANK. THE PLT REFUSED TO COOPERATE WITH THE INVESTIGATOR. HE SAID HE HAD SOLD THE VEHICLE & DID NOT KNOW WHERE IT WAS LOCATED.

Full Narrative

REPORTEDLY, THE PLT WAS ON HIS 1ST FLT IN THE ULTRALIGHT VEHICLE AFTER HE HAD BEEN TAXIING IT DURING THE PREVIOUS WEEK. DURING TAKEOFF FROM A RANCH, THE VEHICLE COLLIDED WITH THE GROUND. ACCORDING TO THE DEPUTY SHERIFF, WHO RESPONDED TO THE SCENE, THE PLT STATED THAT THE CONTROLS FAILED TO RESPOND & HE WAS UNABLE TO LEVEL THE VEHICLE FROM A LEFT BANK. THE PLT REFUSED TO COOPERATE WITH THE INVESTIGATOR. HE SAID HE HAD SOLD THE VEHICLE & DID NOT KNOW WHERE IT WAS LOCATED.

Flight

Event TypeAccident
Event Time12:30 MST
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftTeman Mono-Fly
Tail NumberUNREG
Aircraft CategoryUltr
DamageSubstantial
OperatorLester Ralph Pack
Operating RulePart 103
Engines1
Engine TypeUnknown
Engine DetailsUnknown · UNKNOWN · Unknown
Seats1

People & Injuries

Injury Summary1 injury (1 serious injury)
Fatal0
Serious1
Minor0
Uninjured0
Total1
Crew 1Age 58 · Third Class

Conditions

ConditionsVMC
LightDaylight
Wind150° @ 6 kt
Visibility30 sm
CeilingNone
Temperature / Dew Point64 F / 0 C
Altimeter0
Weather SourceWIT

Appendix: Source Data