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

June 10, 2014 · Hughes TH 55A · N5335U

Hudson, WI

Overview

Report Status
Final with probable cause
Event Type
Accident
Date
June 10, 2014
Injury Outcomes
2 injuries (2 minor injuries)
Location
Hudson, WI
Aircraft
Hughes TH 55A (2013)
Tail Number
N5335U
Operator
Aviation Consultant Expert Solutions
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
CEN14LA537

The passenger reported that the airline transport pilot, who was not helicopter-rated, took off in the helicopter with the intention of conducting a cross-country flight. Shortly after takeoff, the engine lost power, and the helicopter then descended into trees. The helicopter was subsequently moved back to the owner's repair station, and the wreckage was later discovered during routine surveillance of the station by the Federal Aviation Administration; the engine was not examined. The pilot did not report the accident and stated that there was no intent for flight when the helicopter was damaged.

NTSB Probable Cause

The nonhelicopter-rated pilot’s operation of the helicopter and its subsequent collision with trees during takeoff for reasons that could not be determined based on the available evidence.

Full Narrative

On June 10, 2014, at an unknown time, a Hughes TH-55A, N5335U, sustained substantial damage during an off airport forced landing after a reported loss of engine power shortly after takeoff from a parking lot in Hudson, Wisconsin. The non-rotorcraft rated airline transport pilot and passenger received minor injuries. The helicopter was substantially damaged. The helicopter was registered to Aviation Consultant Expert Solutions LLC and operated under the provisions of 14 Code of Federal Regulations Part 91 as a personal flight. Visual meteorological conditions prevailed at the time of the accident and no flight plan was filed. The flight was originating at the time of the accident with the intended destination of Lake Elmo, Minnesota. During a routine surveillance of a Part 145 repair station in Sioux City, Iowa, on October 27, 2015, Federal Aviation Administration (FAA) inspectors noticed some disassembled helicopter wreckage including rotor blades at the facility. The FAA inspectors were told that one of the repair station owners was involved in an accident with the helicopter in Hudson, Wisconsin, in June 2014. The pilot did not report the accident to the NTSB when it occurred. The pilot was contacted by NTSB and he reported that there was no intent for flight when the helicopter was damaged. The passenger who was on board at the time reported in an email that they took off from the JetPubs parking lot in Hudson, Wisconsin, with the intention of flying to Lake Elmo, Minnesota. Shortly after takeoff, the helicopter engine lost power and the helicopter descended contacting trees prior to impacting the ground. The pilot contacted his business partner stating that he crashed the helicopter and he needed help in moving it back to Iowa. The business partner stated he went to Wisconsin and the pilot already had the helicopter on a trailer. He stated the pilot showed him the wooded area on the west side of JetPubs where the accident occurred. The pilot's flight instructor reported to the FAA that the pilot had about 35 hours of rotorcraft flight training and he was not endorsed for solo flight. The engine was not examined following the accident.

Flight

Event TypeAccident
Nearest Airport0nm
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftHughes TH 55A
Tail NumberN5335U
Aircraft CategoryHeli
DamageSubstantial
OperatorAviation Consultant Expert Solutions
Operating RulePart 91
Engine TypeReciprocating
Engine DetailsLycoming · HIO-360-B1A · Reciprocating

People & Injuries

Injury Summary2 injuries (2 minor injuries)
Fatal0
Serious0
Minor2
Uninjured0
Total2
Crew 1Age 40 · First Class · Minor

Conditions

ConditionsVMC
LightDaylight
WindCalm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter0
Weather SourceWFAC

Appendix: Source Data