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
April 3, 1991 · David Lowe Ultra-Pup · N71427
Waycross, GA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
April 3, 1991
Injury Outcomes
No injuries (2 uninjured)
Location
Waycross, GA
Aircraft
David Lowe Ultra-Pup
Tail Number
N71427
Operator
Mosler Motors
Injuries
None
Aircraft Damage
Substantial
NTSB Number
ATL91LA076
THE COMMERCIAL PILOT WAS PREPARING TO LAND THE HOMEBUILT, AMPHIBIOUS AIRPLANE. THE MAIN LANDING GEAR EXTENDED; HOWEVER, THE NOSE GEAR REMAINED UP. AN UNSUCCESSFUL ATTEMPT WAS MADE TO RAISE THE MAIN GEAR. THE PILOT THEN ELECTED TO LAND THE AIRPLANE ON THE GRASS SURFACE ADJACENT TO THE PAVED RUNWAY. UPON TOUCHDOWN, THE FRONT FLOAT PODS DUG INTO THE SOFT SOIL, AND THE AIRPLANE NOSED OVER. THE OPERATOR REPORTED THAT THE BATTERY HAD FAILED, AND BATTERY POWER IS REQUIRED TO RAISE AND LOWER THE LANDING GEAR.
NTSB Probable Cause
THE FAILURE OF THE AIRPLANE BATTERY, WHICH PROHIBITED THE COMPLETE EXTENSION OF THE LANDING GEAR, RESULTING IN A LANDING WITH THE NOSE GEAR RETRACTED. A FACTOR IN THE ACCIDENT WAS THE SOFT TERRAIN AT THE SELECTED LANDING AREA.
Full Narrative
THE COMMERCIAL PILOT WAS PREPARING TO LAND THE HOMEBUILT, AMPHIBIOUS AIRPLANE. THE MAIN LANDING GEAR EXTENDED; HOWEVER, THE NOSE GEAR REMAINED UP. AN UNSUCCESSFUL ATTEMPT WAS MADE TO RAISE THE MAIN GEAR. THE PILOT THEN ELECTED TO LAND THE AIRPLANE ON THE GRASS SURFACE ADJACENT TO THE PAVED RUNWAY. UPON TOUCHDOWN, THE FRONT FLOAT PODS DUG INTO THE SOFT SOIL, AND THE AIRPLANE NOSED OVER. THE OPERATOR REPORTED THAT THE BATTERY HAD FAILED, AND BATTERY POWER IS REQUIRED TO RAISE AND LOWER THE LANDING GEAR.
Flight
Event TypeAccident
Event Time10:00 EST
Nearest AirportWAYCROSS (0nm N)
Runway0
Flight Plan FiledVFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftDavid Lowe Ultra-Pup
Tail NumberN71427
Aircraft CategoryAir
DamageSubstantial
OperatorMosler Motors
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsUnknown · UNKNOWN · Reciprocating · 65
Seats2
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 69 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind180° @ 5 kt
Visibility15 sm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter30.00 inHg
Weather SourcePILO