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
July 17, 1984 · Beech H18S · N21S
Honolulu, HI
Overview
Report Status
Preliminary report
Event Type
Accident
Date
July 17, 1984
Injury Outcomes
No injuries (1 uninjured)
Location
Honolulu, HI
Aircraft
Beech H18S
Tail Number
N21S
Injuries
None
Aircraft Damage
Destroyed
NTSB Number
LAX84LA401
DURING TAKEOFF AT ABOUT 50 FT AGL & 4,000 FT DOWN RWY 4R, THE RIGHT ENG LOST POWER. ACCORDING TO THE PLT, HIS AIRSPEED WAS 105 MPH & THE RIGHT ENG 'POPPED' BEFORE IT LOST POWER. HE ALSO STATED THAT POWER ON THE LEFT ENG DETERIORATED AFTER THE THE RIGHT PROP WAS FEATHERED. THE ACFT WENT INTO A RIGHT BANK & THE PLT MAINTAINED CONTROL OF THE ACFT UNTIL IMPACT WITH THE WATER. EXAMINATION OF THE RIGHT ENG REVEALED THAT THE RIGHT MAGNETO, AMERICAN BOSCH SB9RU-3, SER #B88470, WAS NOT TIMED CORRECTLY. DISASSEMBLY OF THE MAGNETO REVEALED THAT ALL EXCEPT 11 DISTRIBUTOR GEAR TEETH WERE STRIPPED OFF. AT THE TIME OF THE POWER LOSS OF THE RIGHT ENG, ABOUT 5,000 FT OF RWY WAS REMAINING.
Full Narrative
DURING TAKEOFF AT ABOUT 50 FT AGL & 4,000 FT DOWN RWY 4R, THE RIGHT ENG LOST POWER. ACCORDING TO THE PLT, HIS AIRSPEED WAS 105 MPH & THE RIGHT ENG 'POPPED' BEFORE IT LOST POWER. HE ALSO STATED THAT POWER ON THE LEFT ENG DETERIORATED AFTER THE THE RIGHT PROP WAS FEATHERED. THE ACFT WENT INTO A RIGHT BANK & THE PLT MAINTAINED CONTROL OF THE ACFT UNTIL IMPACT WITH THE WATER. EXAMINATION OF THE RIGHT ENG REVEALED THAT THE RIGHT MAGNETO, AMERICAN BOSCH SB9RU-3, SER #B88470, WAS NOT TIMED CORRECTLY. DISASSEMBLY OF THE MAGNETO REVEALED THAT ALL EXCEPT 11 DISTRIBUTOR GEAR TEETH WERE STRIPPED OFF. AT THE TIME OF THE POWER LOSS OF THE RIGHT ENG, ABOUT 5,000 FT OF RWY WAS REMAINING.
Flight
Event TypeAccident
Event Time06:00 HST
Nearest AirportHonolulu Intl (1nm E)
Runway4R
Runway Length9000 ft
Runway Width150 ft
Flight Plan FiledCvfr
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBeech H18S
Tail NumberN21S
Aircraft CategoryAir
DamageDestroyed
Operating RulePart 135
Engines2
Engine TypeReciprocating
Engine DetailsP&W · R985AN143 · Reciprocating · 450
Seats2
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 51 · Second Class
Conditions
ConditionsVMC
LightDawn
Wind270° @ 4 kt
Visibility15 sm
CeilingNone
Temperature / Dew Point0 C
Altimeter29.00 inHg
Observation Time16:00
Weather SourceWFAC