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
February 25, 1993 · Beech C-99 · N63978
Seattle, WA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
February 25, 1993
Injury Outcomes
No injuries (2 uninjured)
Location
Seattle, WA
Aircraft
Beech C-99
Tail Number
N63978
Operator
Ameriflight
Injuries
None
Aircraft Damage
Substantial
NTSB Number
SEA93LA067
THE PILOT, HAVING JUST LANDED HIS AERONCA ON RUNWAY 31L, EXITED AT THE FIRST TAXIWAY AND WAS CLEARED BY GROUND CONTROL TO HIS DESTINATION ON THE AIRPORT. NO REQUEST BY THE AERONCA PILOT WAS MADE AS HE APPROACHED AND PASSED BEHIND THE BEECH C-99 WHICH WAS EXECUTING A RUNUP AT A HOLD SHORT. AS THE AERONCA PASSED BEHIND THE BEECH IT SPUN AROUND AND ITS ENGINE QUIT. THE PILOT OF THE AERONCA THEN RADIOED GROUND CONTROL THAT HE HAD BEEN SPUN AROUND AND GROUND CONTROL REQUESTED THE BEECH TO 'COME TO IDLE' WHICH WAS ACKNOWLEDGED. THE PILOT OF THE AERONCA THEN EXITED HIS AIRCRAFT TO HAND PROP THE ENGINE. ONCE THE ENGINE STARTED, THE AIRCRAFT BEGAN TAXIING WITHOUT ANY OCCUPANTS AS THE PILOT HAD LEFT THE THROTTLE IN A POSITION GREATER THAN IDLE. THE AERONCA SUBSEQUENTLY IMPACTED THE RIGHT REAR QUARTER OF THE BEECH.
NTSB Probable Cause
THE IMPROPER STARTING PROCEDURE BY THE PILOT OF THE AERONCA. A FACTOR CONTRIBUTING TO THE ACCIDENT WAS INADEQUATE COMMUNICATIONS BY THE PILOT OF THE AERONCA.
Full Narrative
THE PILOT, HAVING JUST LANDED HIS AERONCA ON RUNWAY 31L, EXITED AT THE FIRST TAXIWAY AND WAS CLEARED BY GROUND CONTROL TO HIS DESTINATION ON THE AIRPORT. NO REQUEST BY THE AERONCA PILOT WAS MADE AS HE APPROACHED AND PASSED BEHIND THE BEECH C-99 WHICH WAS EXECUTING A RUNUP AT A HOLD SHORT. AS THE AERONCA PASSED BEHIND THE BEECH IT SPUN AROUND AND ITS ENGINE QUIT. THE PILOT OF THE AERONCA THEN RADIOED GROUND CONTROL THAT HE HAD BEEN SPUN AROUND AND GROUND CONTROL REQUESTED THE BEECH TO 'COME TO IDLE' WHICH WAS ACKNOWLEDGED. THE PILOT OF THE AERONCA THEN EXITED HIS AIRCRAFT TO HAND PROP THE ENGINE. ONCE THE ENGINE STARTED, THE AIRCRAFT BEGAN TAXIING WITHOUT ANY OCCUPANTS AS THE PILOT HAD LEFT THE THROTTLE IN A POSITION GREATER THAN IDLE. THE AERONCA SUBSEQUENTLY IMPACTED THE RIGHT REAR QUARTER OF THE BEECH.
Flight
Event TypeAccident
Event Time16:48 PST
Nearest AirportBoeing Field (0nm)
Runway0
Flight Plan FiledVFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBeech C-99
Tail NumberN63978
Aircraft CategoryAir
DamageSubstantial
OperatorAmeriflight
Operating RulePart 91
Engines2
Engine TypeTurboprop
Engine DetailsP&W · PT6A-36 · Turboprop · 715
Seats2
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 28 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind340° @ 4 kt
Visibility50 sm
CeilingNone
Temperature / Dew Point43 C / 18 C
Altimeter30.00 inHg
Weather SourceWIT