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 17, 1990 · Air Command 447 · UNREG

Hearne, TX

Overview

Report Status
Probable Cause
Event Type
Accident
Date
February 17, 1990
Injury Outcomes
1 injury (1 fatality)
Location
Hearne, TX
Aircraft
Air Command 447
Tail Number
UNREG
Operator
Guerra Oscar J Jr
Injuries
Fatal
Aircraft Damage
Destroyed
NTSB Number
FTW90DRA03

THE PILOT LOST CONTROL OF THE AIRCRAFT SHORTLY AFTER TAKING OFF. IT WAS THE PILOT'S FIRST FLIGHT IN THE AIRCRAFT AFTER HE HAD REBUILT IT, HOWEVER, IT HAD BEEN TEST FLOWN BY ANOTHER INDIVIDUAL. THE PILOT HAD ACCUMULATED A TOTAL OF 6.5 HOURS IN GYROPLANES AND RECEIVED AN ENDORSEMENT TO HIS PRIVATE LICENSE. EXAMINATION OF THE WRECKAGE DID NOT REVEAL ANY REASON FOR THE LOSS OF CONTROL. PILOT WITNESSES, WHO WERE FAMILIAR WITH GYROPLANE OPERATIONS, STATED THAT THE PILOT LOST CONTROL DUE TO 'IMPROPER PILOT TECHNIQUE'.

NTSB Probable Cause

THE PILOT'S LOSS OF CONTROL FOR UNDETERMINED REASONS. A FACTOR WAS THE PILOT'S LACK OF TOTAL EXPERIENCE IN THE ACCIDENT MAKE AND MODEL.

Full Narrative

THE PILOT LOST CONTROL OF THE AIRCRAFT SHORTLY AFTER TAKING OFF. IT WAS THE PILOT'S FIRST FLIGHT IN THE AIRCRAFT AFTER HE HAD REBUILT IT, HOWEVER, IT HAD BEEN TEST FLOWN BY ANOTHER INDIVIDUAL. THE PILOT HAD ACCUMULATED A TOTAL OF 6.5 HOURS IN GYROPLANES AND RECEIVED AN ENDORSEMENT TO HIS PRIVATE LICENSE. EXAMINATION OF THE WRECKAGE DID NOT REVEAL ANY REASON FOR THE LOSS OF CONTROL. PILOT WITNESSES, WHO WERE FAMILIAR WITH GYROPLANE OPERATIONS, STATED THAT THE PILOT LOST CONTROL DUE TO 'IMPROPER PILOT TECHNIQUE'.

Flight

Event TypeAccident
Event Time15:30 CST
Nearest AirportHearne Muni (0nm N)
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftAir Command 447
Tail NumberUNREG
Aircraft CategoryGyro
DamageDestroyed
OperatorGuerra Oscar J Jr
Operating RulePart 103
Engines1
Engine TypeReciprocating
Engine DetailsRotax · 503 · Reciprocating
Seats1

People & Injuries

Injury Summary1 injury (1 fatality)
Fatal1
Serious0
Minor0
Uninjured0
Total1
Crew 1Age 37 · Second Class

Conditions

ConditionsVMC
LightDaylight
WindCalm
Visibility10 sm
CeilingBroken clouds 8000 ft
Temperature / Dew Point52 / 28 C
Altimeter30.29 inHg
Observation Time21:00
Weather SourceWFAC

Appendix: Source Data