Overall Trends
Total, fatal, and serious accidents in the selected range.
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
Search everything
Fast key and full-text search with live filters, watches, and precise metadata.
Use quotes for exact phrase matches (for example "fuel selector valve").
Featured 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…
High-signal investigations
Major cases, deep-report coverage, and investigation media across decades of NTSB history.
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 manufacturersAirports
More airportsOperators
More operatorsAbout
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
September 17, 1991 · Aeronca 7DC · N9654H
Yellow Pine, ID
Overview
Report Status
Probable Cause
Event Type
Accident
Date
September 17, 1991
Injury Outcomes
1 injury (1 serious injury)
Location
Yellow Pine, ID
Aircraft
Aeronca 7DC
Tail Number
N9654H
Operator
Steven G Joachim
Injuries
Serious
Aircraft Damage
Destroyed
NTSB Number
SEA91LA242
THE PILOT REPORTED THAT AFTER TAKING OFF FROM A REMOTE STRIP IN MOUNTAINOUS TERRAIN, HE INADVERTANTLY ENTERED A BOX CANYON. RISING TERRAIN IN THE CANYON EXCEEDED THE CLIMB CAPABILITY OF THE AIRCRAFT. SUBSEQUENTLY, THE AIRCRAFT CRASHED INTO TREES AND WAS DESTROYED. THE DENSITY ALTITUDE AT THE SITE WAS ABOUT 7600 FT.
NTSB Probable Cause
IMPROPER INFLIGHT PLANNING/DECISION BY THE PILOT, WHICH RESULTED IN INADVERTENT FLIGHT INTO A BOX CANYON AND SUBSEQUENT COLLISION WITH TREES, WHEN THERE WAS INSUFFICIENT SPACE TO REVERSE COURSE AND THE AIRCRAFT WOULD NOT OUTCLIMB RISING TERRAIN. THE TERRAIN CONDITIONS AND HIGH DENSITY ALTITUDE WERE RELATED FACTORS.
Full Narrative
THE PILOT REPORTED THAT AFTER TAKING OFF FROM A REMOTE STRIP IN MOUNTAINOUS TERRAIN, HE INADVERTANTLY ENTERED A BOX CANYON. RISING TERRAIN IN THE CANYON EXCEEDED THE CLIMB CAPABILITY OF THE AIRCRAFT. SUBSEQUENTLY, THE AIRCRAFT CRASHED INTO TREES AND WAS DESTROYED. THE DENSITY ALTITUDE AT THE SITE WAS ABOUT 7600 FT.
Flight
Event TypeAccident
Event Time14:15 MDT
Nearest AirportIndian Creek (3nm N)
Runway4
Runway Length5000 ft
Runway Width100 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftAeronca 7DC
Tail NumberN9654H
Aircraft CategoryAir
DamageDestroyed
OperatorSteven G Joachim
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · C-85-8F · Reciprocating · 85
Seats2
People & Injuries
Injury Summary1 injury (1 serious injury)
Fatal0
Serious1
Minor0
Uninjured0
Total1
Crew 1Age 41 · Third Class
Conditions
ConditionsVMC
LightDaylight
Wind300° @ 3 kt
Visibility15 sm
CeilingNone
Temperature / Dew Point25 C
Altimeter0
Observation Time18:00
Weather SourceWFAC