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
December 15, 1990 · Grumman AA1B · N1638R
Roswell, NM
Overview
Report Status
Probable Cause
Event Type
Accident
Date
December 15, 1990
Injury Outcomes
No injuries (1 uninjured)
Location
Roswell, NM
Aircraft
Grumman AA1B
Tail Number
N1638R
Operator
Guffey Jerry D
Injuries
None
Aircraft Damage
Substantial
NTSB Number
DEN91LA025
THE PILOT SAID THAT AFTER TAKEOFF, AT AN ALTITUDE OF APPROXIMATELY 150 FEET, THE ENGINE STARTED RUNNING ROUGH. HE SAID THAT ENGINE PERFORMANCE CONTINUED TO DETERIORATE AND HE HAD TO MAKE A FORCED LANDING. THE AIRCRAFT STRUCK THE GROUND HARD AND SUSTAINED SUBSTANTIAL DAMAGE TO THE ENGINE COWLING AND THE MAIN LANDING GEAR. SUBSEQUENT EXAMINATION OF THE ENGINE REVEALED ONE CYLINDER HAD FOULED SPARK PLUGS AND ALL CYLINDERS EXCEPT ONE HAD LOW COMPRESSION.
NTSB Probable Cause
LOW CYLINDER COMPRESSION AND FOULED SPARK PLUG.
Full Narrative
THE PILOT SAID THAT AFTER TAKEOFF, AT AN ALTITUDE OF APPROXIMATELY 150 FEET, THE ENGINE STARTED RUNNING ROUGH. HE SAID THAT ENGINE PERFORMANCE CONTINUED TO DETERIORATE AND HE HAD TO MAKE A FORCED LANDING. THE AIRCRAFT STRUCK THE GROUND HARD AND SUSTAINED SUBSTANTIAL DAMAGE TO THE ENGINE COWLING AND THE MAIN LANDING GEAR. SUBSEQUENT EXAMINATION OF THE ENGINE REVEALED ONE CYLINDER HAD FOULED SPARK PLUGS AND ALL CYLINDERS EXCEPT ONE HAD LOW COMPRESSION.
Flight
Event TypeAccident
Event Time10:11 MST
Nearest AirportRoswell Indust. Air Cntr. (0nm N)
Runway0
Flight Plan FiledVfif
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftGrumman AA1B
Tail NumberN1638R
Aircraft CategoryAir
DamageSubstantial
OperatorGuffey Jerry D
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-235-L2C · Reciprocating · 108
Seats2
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 26 · First Class
Conditions
ConditionsVMC
LightDaylight
Wind20° @ 3 kt
Visibility40 sm
CeilingNone
Temperature / Dew Point46 / 27 C
Altimeter0
Weather SourcePILO