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 17, 2016 · Airbus AS350 B2 · N4035W

Mcallen, TX

Overview

Report Status
Final with probable cause
Event Type
Accident
Date
June 17, 2016
Injury Outcomes
No injuries (2 uninjured)
Location
Mcallen, TX
Aircraft
Airbus AS350 B2 (1996)
Tail Number
N4035W
Operator
Us Department of Homeland Security
Injuries
None
Aircraft Damage
Substantial
NTSB Number
GAA16CA328

The helicopter pilot reported that during the engine run-up sequence while on a movable helicopter pad attached to a tug, he noticed that the right rear door was not secure. The pilot unhooked his shoulder harness to reach back to secure the door. While attempting to reach the door, the pilot reported that he inadvertently applied right tail rotor pedal, which caused the helicopter to spin to the right multiple times. During the rotation the helicopter departed the movable pad, impacted the tug, and came to rest in an upright position on the ground. The helicopter sustained substantial damage to the vertical stabilizer. The pilot reported there were no preimpact mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation.

NTSB Probable Cause

The pilot's inadvertent input of the right tail rotor pedal, which resulted in a loss of directional control and an impact with service equipment.

Full Narrative

The helicopter pilot reported that during the engine run-up sequence while on a movable helicopter pad attached to a tug, he noticed that the right rear door was not secure. The pilot unhooked his shoulder harness to reach back to secure the door. While attempting to reach the door, the pilot reported that he inadvertently applied right tail rotor pedal, which caused the helicopter to spin to the right multiple times. During the rotation the helicopter departed the movable pad, impacted the tug, and came to rest in an upright position on the ground. The helicopter sustained substantial damage to the vertical stabilizer. The pilot reported there were no preimpact mechanical failures or malfunctions with the airframe or engine that would have precluded normal operation.

Flight

Event TypeAccident
Event Time18:45 CDT
Nearest AirportMc Allen Miller Intl (0nm WNW)
Flight Plan FiledNone
Flight Plan ActivatedNo
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftAirbus AS350 B2
Tail NumberN4035W
Aircraft CategoryHeli
DamageSubstantial
OperatorUs Department of Homeland Security
Engines1
Engine TypeTurboshaft
Engine DetailsTurbomeca · ARRIEL 1D1 · Turboshaft · 712
Seats6

People & Injuries

Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 34 · First Class · None
Crew 2None

Conditions

ConditionsVMC
LightDaylight
Wind120° @ 11 kt
Visibility10 sm
CeilingNone
Altimeter29.82 inHg
Observation Time23:53
Weather SourceWFAC

Appendix: Source Data