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 25, 1989 · Beech V35 · N27007
Crosbyton, TX
Overview
Report Status
Probable Cause
Event Type
Accident
Date
November 25, 1989
Injury Outcomes
2 injuries (2 minor injuries)
Location
Crosbyton, TX
Aircraft
Beech V35
Tail Number
N27007
Injuries
Minor
Aircraft Damage
Destroyed
NTSB Number
FTW90LA035
THE AIRCRAFT ENGINE FAILED, AFTER A COMPLETE LOSS OF OIL, DUE TO AN UNDERTORQUED OIL COOLER TO ENGINE ASSEMBLY THAT PERMITTED THE OIL TO BYPASS THE SEAL. THE ENGINE HAD BEEN IN SERVICE 162 HOURS SINCE OVERHAUL AND 3 HOURS SINCE ANNUAL INSPECTION. THE PILOT EXECUTED A FORCED LANDING TO ROUGH TERRAIN THAT CAUSED THE MAIN GEAR TO SHEAR, NOSE GEAR TO COLLAPSE, AND THE AIRCRAFT TO NOSE OVER.
NTSB Probable Cause
IMPROPER OVERHAUL OF THE AIRCRAFT ENGINE BY MAINTENANCE PERSONNEL THAT LED TO THE COMPLETE LOSS OF ENGINE OIL DUE TO AN UNDERTORQUED OIL COOLER ASSEMBLY. FACTORS IN THE ACCIDENT WERE THE FAILURE OF MAINTENANCE PERSONNEL TO DETECT THE CONDITION DURING THE ANNUAL INSPECTION AND THE UNSUITABLE TERRAIN FOR THE FORCED LANDING.
Full Narrative
THE AIRCRAFT ENGINE FAILED, AFTER A COMPLETE LOSS OF OIL, DUE TO AN UNDERTORQUED OIL COOLER TO ENGINE ASSEMBLY THAT PERMITTED THE OIL TO BYPASS THE SEAL. THE ENGINE HAD BEEN IN SERVICE 162 HOURS SINCE OVERHAUL AND 3 HOURS SINCE ANNUAL INSPECTION. THE PILOT EXECUTED A FORCED LANDING TO ROUGH TERRAIN THAT CAUSED THE MAIN GEAR TO SHEAR, NOSE GEAR TO COLLAPSE, AND THE AIRCRAFT TO NOSE OVER.
Flight
Event TypeAccident
Event Time13:00 CST
Nearest AirportCrosbyton, Tx. (1nm N)
Runway0
Flight Plan FiledVFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBeech V35
Tail NumberN27007
Aircraft CategoryAir
DamageDestroyed
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · IO-520-BA · Reciprocating · 285
Seats6
People & Injuries
Injury Summary2 injuries (2 minor injuries)
Fatal0
Serious0
Minor2
Uninjured0
Total2
Crew 1Age 53 · Third Class
Conditions
ConditionsVMC
LightDaylight
Wind280° @ 20 kt
Visibility15 sm
CeilingNone
Temperature / Dew Point70 F / 0 C
Altimeter30.00 inHg
Weather SourcePILO