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

September 28, 1990 · Waco YMS · N40115

Kailua, HI

Overview

Report Status
Probable Cause
Event Type
Accident
Date
September 28, 1990
Injury Outcomes
No injuries (2 uninjured)
Location
Kailua, HI
Aircraft
Waco YMS
Tail Number
N40115
Operator
Kegel Gary
Injuries
None
Aircraft Damage
Substantial
NTSB Number
LAX90LA339

THE PILOT OF A WACO YMF, N40115, STATED AFTER COMPLETING SEVERAL AEROBATIC MANEUVERS EVERYTHING WAS NORMAL. THE PILOT STATED HE ENTERED ANOTHER LOOP AT 3500 FEET. HE STATED HE ADDED FULL POWER ON THE UP SIDE AND REDUCED POWER TO IDLE ON THE DOWN SIDE. HE STATED AS HE STARTED TO ROUND OUT AT THE BOTTOM OF THE LOOP HE ADDED POWER AND THERE WAS NO RESPONSE. THE TEMPERATURE/DEW POINT SPREAD WAS FOUND TO BE IN 'SERIOUS ICING-GLIDE' RANGE.

NTSB Probable Cause

IMPROPER USE OF CARBURETOR HEAT RESULTING IN ENGINE FAILURE DUE TO CARBURETOR ICING.

Full Narrative

THE PILOT OF A WACO YMF, N40115, STATED AFTER COMPLETING SEVERAL AEROBATIC MANEUVERS EVERYTHING WAS NORMAL. THE PILOT STATED HE ENTERED ANOTHER LOOP AT 3500 FEET. HE STATED HE ADDED FULL POWER ON THE UP SIDE AND REDUCED POWER TO IDLE ON THE DOWN SIDE. HE STATED AS HE STARTED TO ROUND OUT AT THE BOTTOM OF THE LOOP HE ADDED POWER AND THERE WAS NO RESPONSE. THE TEMPERATURE/DEW POINT SPREAD WAS FOUND TO BE IN 'SERIOUS ICING-GLIDE' RANGE.

Flight

Event TypeAccident
Event Time10:45 HST
Nearest Airport0nm N
Runway0
Runway Length0
Runway Width0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftWaco YMS
Tail NumberN40115
Aircraft CategoryAir
DamageSubstantial
OperatorKegel Gary
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsJacobs · R755-B2 · Reciprocating · 275
Seats3

People & Injuries

Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 44 · Second Class

Conditions

ConditionsVMC
LightDaylight
Wind270° @ 5 kt
Visibility15 sm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter0
Observation Time19:50
Weather SourceWFAC

Appendix: Source Data