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, 1994 · Hughes 369D · N1088G

Snoqualmie, WA

Overview

Report Status
Final with probable cause
Event Type
Accident
Date
June 10, 1994
Injury Outcomes
No injuries (2 uninjured)
Location
Snoqualmie, WA
Aircraft
Hughes 369D
Tail Number
N1088G
Operator
Highline Helicopters
Injuries
None
Aircraft Damage
Substantial
NTSB Number
SEA94LA147

THE PILOT REPORTED THAT WHILE MANEUVERING FOR LANDING, HE APPROACHED THE LANDING PAD DOWNWIND. THE PILOT REDUCED POWER AND THE HELICOPTER SETTLED WITH A LOW ROTOR RPM INDICATION. THE PILOT ATTEMPTED TO ABORT THE LANDING; HOWEVER, DURING THIS MANEUVER THE HELICOPTER COLLIDED WITH TREE TOPS.

NTSB Probable Cause

POOR IN-FLIGHT PLANNING/DECISION. FACTORS TO THE ACCIDENT WERE: CLEARANCE NOT MAINTAINED AND TAILWIND.

Full Narrative

On June 9, 1994, at 1800 Pacific daylight time, a Hughes 369D, N1088G, collided with trees while maneuvering for landing near Snoqualmie, Washington. Visual meteorological conditions prevailed at the time and no flight plan was filed. The helicopter was substantially damaged and the commercial pilot and his passenger were not injured. In a written statement the pilot reported that at the end of the work day, he was preparing to land on a pad to pick up ground crew. The pilot made a low pass over the pad, then pulled up and turned downwind for the landing. The helicopter began to settle with power and the descent rate increased, followed by a low RPM indication. The pilot stated that he "lowered the power" and pushed the cyclic forward in an attempt to abort the landing, however, the helicopter collided with the nearby tree tops. The pilot was able to land the helicopter without further incident.

Flight

Event TypeAccident
Event Time18:00 PDT
Nearest Airport0nm
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftHughes 369D
Tail NumberN1088G
Aircraft CategoryHeli
DamageSubstantial
OperatorHighline Helicopters
Operating RulePart 91
Engines1
Engine TypeTurboshaft
Engine DetailsAllison · 250-C20B · Turboshaft · 420
Seats5

People & Injuries

Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 36 · Second Class

Conditions

ConditionsVMC
LightDaylight
Wind240° @ 10 kt, gusting 15 kt
Visibility30 sm
CeilingNone
Temperature / Dew Point64 F / 0 C
Altimeter29.00 inHg
Weather SourcePILO

Appendix: Source Data