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
November 7, 1984 · Piper PA-18-150 · N4312Z
Algona, IA
Overview
Report Status
Preliminary report
Event Type
Accident
Date
November 7, 1984
Injury Outcomes
No injuries (1 uninjured)
Location
Algona, IA
Aircraft
Piper PA-18-150
Tail Number
N4312Z
Injuries
None
Aircraft Damage
Substantial
NTSB Number
MKC85LA018
AT ABOUT 100 FT AGL AFTER TAKEOFF, ENG LOST PWR. PLT ATTEMPTED TO CIRCLE TO LAND ON CLOSEST RUNWAY BUT ENG WAS DEVELOPING INSUFFICIENT PWR TO MAINTAIN ALTITUDE IN TURN. ACFT TOUCHED DOWN 150 FT SHORT OF THRESHOLD. PLT DID NOT LEVEL WINGS PRIOR TO TOUCHDOWN. INVESTIGATION REVEALED FLAME TUBE IN MUFFLER DISINTEGRATED & FRAGMENTS BLOCKED EXHAUST. ACFT ANNUAL INSPECTION PERFORMED 30 FLT HRS PRIOR TO MISHAP.
Full Narrative
AT ABOUT 100 FT AGL AFTER TAKEOFF, ENG LOST PWR. PLT ATTEMPTED TO CIRCLE TO LAND ON CLOSEST RUNWAY BUT ENG WAS DEVELOPING INSUFFICIENT PWR TO MAINTAIN ALTITUDE IN TURN. ACFT TOUCHED DOWN 150 FT SHORT OF THRESHOLD. PLT DID NOT LEVEL WINGS PRIOR TO TOUCHDOWN. INVESTIGATION REVEALED FLAME TUBE IN MUFFLER DISINTEGRATED & FRAGMENTS BLOCKED EXHAUST. ACFT ANNUAL INSPECTION PERFORMED 30 FLT HRS PRIOR TO MISHAP.
Flight
Event TypeAccident
Event Time09:30 CST
Nearest AirportAlgona Municipal (0nm N)
Runway12
Runway Length3960 ft
Runway Width75 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftPiper PA-18-150
Tail NumberN4312Z
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-320-A2B · Reciprocating · 150
Seats2
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 27 · None
Conditions
ConditionsVMC
LightDaylight
Wind160° @ 15 kt, gusting 20 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point39 C / 0 C
Altimeter0
Weather SourcePILO