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

August 21, 1982 · Hughes 369HS · N56AD

Troutdale, OR

Overview

Report Status
Preliminary report
Event Type
Accident
Date
August 21, 1982
Injury Outcomes
No injuries (1 uninjured)
Location
Troutdale, OR
Aircraft
Hughes 369HS
Tail Number
N56AD
Operator
Rem Service
Injuries
None
Aircraft Damage
Substantial
NTSB Number
SEA82FYM23

THE FLT ORIGINATED AT THE PLT'S RESIDENCE 20 MI SOUTH OF THE TROUTDALE ARPT. THE PLT STATED THE PURPOSE OF THE FLT WAS TO REFUEL THE ACFT SINCE HE FIGURED HE HAD ABOUT 8 GALS OF FUEL ON DEPARTURE. AS THE ACFT APPROACHED THE GROUND AT ABOUT 50 FT AGL THE PLT EXECUTED WHAT APPEARED TO BE THE FLARE MANEUVER AT THE BOTTOM OF AN AUTOROTATION. THE ACFT THEN SUDDENLY FELL VERTICALLY TO THE GROUND, BOUNCED ABOUT 10-15 FT, THEN FELL BACK TO THE GROUND & ROLLED OVER ON ITS RIGHT SIDE. NO FUEL WAS ON BOARD.

Full Narrative

THE FLT ORIGINATED AT THE PLT'S RESIDENCE 20 MI SOUTH OF THE TROUTDALE ARPT. THE PLT STATED THE PURPOSE OF THE FLT WAS TO REFUEL THE ACFT SINCE HE FIGURED HE HAD ABOUT 8 GALS OF FUEL ON DEPARTURE. AS THE ACFT APPROACHED THE GROUND AT ABOUT 50 FT AGL THE PLT EXECUTED WHAT APPEARED TO BE THE FLARE MANEUVER AT THE BOTTOM OF AN AUTOROTATION. THE ACFT THEN SUDDENLY FELL VERTICALLY TO THE GROUND, BOUNCED ABOUT 10-15 FT, THEN FELL BACK TO THE GROUND & ROLLED OVER ON ITS RIGHT SIDE. NO FUEL WAS ON BOARD.

Flight

Event TypeAccident
Event Time13:30 PDT
Nearest AirportTroutdale (0nm N)
Runway0
Runway Length0
Runway Width0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftHughes 369HS
Tail NumberN56AD
Aircraft CategoryHeli
DamageSubstantial
OperatorRem Service
Operating RulePart 91
Engines1
Engine TypeTurboshaft
Engine DetailsAllison · 250-C18 · Turboshaft · 400
Seats4

People & Injuries

Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 35 · First Class

Conditions

ConditionsVMC
LightDaylight
WindCalm
Visibility50 sm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter0

Appendix: Source Data