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

July 1, 1984 · Aeronca 15AC · N1436H

Ester, AK

Overview

Report Status
Preliminary report
Event Type
Accident
Date
July 1, 1984
Injury Outcomes
2 injuries (1 serious injury, 1 minor injury)
Location
Ester, AK
Aircraft
Aeronca 15AC
Tail Number
N1436H
Operator
Howard Francis Bates
Injuries
Serious
Aircraft Damage
Substantial
NTSB Number
ANC84LA109

THE ACFT WAS LANDED IN THE TOPS OF SMALL SPRUCE TREES AFTER THE ENGINE LOST OIL PRESSURE AND WAS SHUT DOWN. THE PLT LATER ADMITTED THAT THE OIL LINES NEEDED RELACEMENT ON THE LAST ANNUAL ON 06-22-84 BUT HE POSTPONED IT AND LATER FORGOT TO DO IT IN THE EXCITEMENT OF RE-FLYING ON FLOATS AFTER A 2 YEAR LAY-OFF. A BADLY DETERIORATED OIL OUTLET LINE FROM THE OIL COOLER HAD FAILED LOSING OIL AND PRESSURE.

Full Narrative

THE ACFT WAS LANDED IN THE TOPS OF SMALL SPRUCE TREES AFTER THE ENGINE LOST OIL PRESSURE AND WAS SHUT DOWN. THE PLT LATER ADMITTED THAT THE OIL LINES NEEDED RELACEMENT ON THE LAST ANNUAL ON 06-22-84 BUT HE POSTPONED IT AND LATER FORGOT TO DO IT IN THE EXCITEMENT OF RE-FLYING ON FLOATS AFTER A 2 YEAR LAY-OFF. A BADLY DETERIORATED OIL OUTLET LINE FROM THE OIL COOLER HAD FAILED LOSING OIL AND PRESSURE.

Flight

Event TypeAccident
Event Time16:30 AKDT
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftAeronca 15AC
Tail NumberN1436H
Aircraft CategoryAir
DamageSubstantial
OperatorHoward Francis Bates
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · O-300-A · Reciprocating · 145
Seats4

People & Injuries

Injury Summary2 injuries (1 serious injury, 1 minor injury)
Fatal0
Serious1
Minor1
Uninjured0
Total2
Crew 1Age 57 · Third Class

Conditions

ConditionsVMC
LightDaylight
WindCalm
CeilingNone
Temperature / Dew Point48
Altimeter29.00 inHg
Observation Time16:00
Weather SourcePILO

Appendix: Source Data