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
February 26, 1988 · Grumman G-164A · N4647
Alamo, TX
Overview
Report Status
Preliminary report
Event Type
Accident
Date
February 26, 1988
Injury Outcomes
No injuries (1 uninjured)
Location
Alamo, TX
Aircraft
Grumman G-164A
Tail Number
N4647
Operator
Midvalley Dusters
Injuries
None
Aircraft Damage
Destroyed
NTSB Number
FTW88DRG07
THE PILOT EXPERIENCED A TOTAL LOSS OF ENGINE POWER DURING CLIMB WHEN HE MADE HIS INITIAL POWER REDUCTION. THE POWER LOSS WAS ACCOMPANIED BY A LOUD BANG. A SEVERE POSTACCIDENT GROUND FIRE MELTED A LARGE PORTION OF THE ENGINE. A PARTIAL ENGINE TEARDOWN WAS PERFORMED, HOWEVER, IT FAILED TO REVEAL THE CAUSE OF THE POWER LOSS OR THE LOUD BANG. THE EXAMINATION REVEALED THAT THE CONNECTING RODS, CRANKSHAFT, ETC., REMAINED INTACT. THE GROUND FIRE FOLLOWED A FORCED LNDG AND NOSEOVER.
Full Narrative
THE PILOT EXPERIENCED A TOTAL LOSS OF ENGINE POWER DURING CLIMB WHEN HE MADE HIS INITIAL POWER REDUCTION. THE POWER LOSS WAS ACCOMPANIED BY A LOUD BANG. A SEVERE POSTACCIDENT GROUND FIRE MELTED A LARGE PORTION OF THE ENGINE. A PARTIAL ENGINE TEARDOWN WAS PERFORMED, HOWEVER, IT FAILED TO REVEAL THE CAUSE OF THE POWER LOSS OR THE LOUD BANG. THE EXAMINATION REVEALED THAT THE CONNECTING RODS, CRANKSHAFT, ETC., REMAINED INTACT. THE GROUND FIRE FOLLOWED A FORCED LNDG AND NOSEOVER.
Flight
Event TypeAccident
Event Time07:30 CST
Nearest AirportMid Valley (0nm SE)
Runway13
Runway Length1900 ft
Runway Width25 ft
Flight Plan FiledNone
Aircraft FireGrd
Aircraft ExplosionNo
Aircraft
AircraftGrumman G-164A
Tail NumberN4647
Aircraft CategoryAir
DamageDestroyed
OperatorMidvalley Dusters
Operating RulePart 137
Engines1
Engine TypeReciprocating
Engine DetailsP&W · R-1340-AN1 · Reciprocating · 600
Seats1
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 43 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind130° @ 5 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point68 F / 0 C
Altimeter0
Weather SourcePILO