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
June 29, 1982 · Ayres S-2C · N1648S
Greeley, CO
Overview
Report Status
Preliminary report
Event Type
Accident
Date
June 29, 1982
Injury Outcomes
No injuries (1 uninjured)
Location
Greeley, CO
Aircraft
Ayres S-2C
Tail Number
N1648S
Operator
Easton Aerial Sprayers
Injuries
None
Aircraft Damage
Substantial
NTSB Number
DEN82DA121
AFTER TAKEOFF THE PLT NOTICED THE OIL TEMP WAS INCREASING & THE ENG BEGAN LOSING POWER AT ABOUT 100 FT AGL. HE WAS UNABLE TO GAIN ANY ADDITIONAL ALTITUDE. HE CONTINUED FLYING FOR ANOTHER 15 MINUTES WHEN THE ENG FAILED COMPLETELY. THE ENG TEARDOWN & INSPECTION REVEALED THAT THE CAM REDUCTION GEAR BUSHINGS, NOSE CASE PARTS & ENG SHOWED SIGNS OF OIL STARVATION. THE MASTER ROD BEARING HAD SEIZED. THE CAM REDUCTION GEAR HAD BROKEN & THE CAM SHAFT DAMAGED. THE MAIN CASES, RODS & PISTONS WERE DAMAGED. THE OIL PUMP WAS FOUND OPERATIONAL.
Full Narrative
AFTER TAKEOFF THE PLT NOTICED THE OIL TEMP WAS INCREASING & THE ENG BEGAN LOSING POWER AT ABOUT 100 FT AGL. HE WAS UNABLE TO GAIN ANY ADDITIONAL ALTITUDE. HE CONTINUED FLYING FOR ANOTHER 15 MINUTES WHEN THE ENG FAILED COMPLETELY. THE ENG TEARDOWN & INSPECTION REVEALED THAT THE CAM REDUCTION GEAR BUSHINGS, NOSE CASE PARTS & ENG SHOWED SIGNS OF OIL STARVATION. THE MASTER ROD BEARING HAD SEIZED. THE CAM REDUCTION GEAR HAD BROKEN & THE CAM SHAFT DAMAGED. THE MAIN CASES, RODS & PISTONS WERE DAMAGED. THE OIL PUMP WAS FOUND OPERATIONAL.
Flight
Event TypeAccident
Event Time09:30 MDT
Nearest AirportPlatte Valley (0nm N)
Runway0
Runway Length0
Runway Width0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftAyres S-2C
Tail NumberN1648S
Aircraft CategoryAir
DamageSubstantial
OperatorEaston Aerial Sprayers
Operating RulePart 137
Engines1
Engine TypeReciprocating
Engine DetailsP&W · R-1340-AN-1 · Reciprocating · 600
Seats1
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 44 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind220° @ 5 kt
Visibility65 sm
CeilingNone
Temperature / Dew Point16 C / 0 C
Altimeter30.00 inHg
Observation Time14:51