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
July 4, 1991 · Cessna 150K · N64556
Flagstaff, AZ
Overview
Report Status
Probable Cause
Event Type
Accident
Date
July 4, 1991
Injury Outcomes
No injuries (1 uninjured)
Location
Flagstaff, AZ
Aircraft
Cessna 150K
Tail Number
N64556
Operator
Henry Halle
Injuries
None
Aircraft Damage
Substantial
NTSB Number
LAX91LA286
A CESSNA 150K COLLIDED WITH FENCE AND NOSED OVER IN AN OPEN FIELD AFTER A LOSS OF ENGINE POWER. THE PILOT INDICATED THAT THE LOSS OF ENGINE POWER WAS A RESULT OF FUEL EXHAUSTION. THE AIRPLANE TOOK OFF WITH FULL FUEL TANKS. THREE HOURS LATER THE ENGINE LOSS POWER. THE DISTANCE BETWEEN THE DEPARTURE AIRPORT AND THE INTENDED DESTINATION IS ABOUT 344 NM. THE PILOT'S OPERATING HANDBOOK LISTS UNDER THE PERFORMANCE SPECIFICATIONS THE AIRPLANE'S RANGE IS 340 NAUTICAL MILES IN 3.3 HOURS, USING 75 PERCENT ENGINE POWER AT A 7000 FOOT PRESSURE ALTITUDE. FEDERAL AVIATION REGULATIONS DICTATE PILOT'S BEFORE BEGINNING A FLIGHT BECOME FAMILIAR WITH FUEL REQUIREMENTS, AND HAVE ENOUGH FUEL TO FLY TO THE FIRST POINT OF INTENDED LANDING AND FLY AFTER THAT FOR AT LEAST 30 MINUTES.
NTSB Probable Cause
THE PILOT-IN-COMMAND'S IMPROPER PREFLIGHT PLANNING OF FUEL REQUIREMENTS TO ACCOMPLISH THE INTENDED FLIGHT WHICH RESULTED IN AN INADEQUATE FUEL SUPPLY AND SUBSEQUENT LOSS OF ENGINE POWER. A FACTOR WAS THE FENCE.
Full Narrative
A CESSNA 150K COLLIDED WITH FENCE AND NOSED OVER IN AN OPEN FIELD AFTER A LOSS OF ENGINE POWER. THE PILOT INDICATED THAT THE LOSS OF ENGINE POWER WAS A RESULT OF FUEL EXHAUSTION. THE AIRPLANE TOOK OFF WITH FULL FUEL TANKS. THREE HOURS LATER THE ENGINE LOSS POWER. THE DISTANCE BETWEEN THE DEPARTURE AIRPORT AND THE INTENDED DESTINATION IS ABOUT 344 NM. THE PILOT'S OPERATING HANDBOOK LISTS UNDER THE PERFORMANCE SPECIFICATIONS THE AIRPLANE'S RANGE IS 340 NAUTICAL MILES IN 3.3 HOURS, USING 75 PERCENT ENGINE POWER AT A 7000 FOOT PRESSURE ALTITUDE. FEDERAL AVIATION REGULATIONS DICTATE PILOT'S BEFORE BEGINNING A FLIGHT BECOME FAMILIAR WITH FUEL REQUIREMENTS, AND HAVE ENOUGH FUEL TO FLY TO THE FIRST POINT OF INTENDED LANDING AND FLY AFTER THAT FOR AT LEAST 30 MINUTES.
Flight
Event TypeAccident
Event Time09:30 MST
Nearest AirportPulliam Field (14nm E)
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna 150K
Tail NumberN64556
Aircraft CategoryAir
DamageSubstantial
OperatorHenry Halle
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · O-200 · Reciprocating · 100
Seats2
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 43 · Unknown
Conditions
ConditionsVMC
LightDaylight
Wind180° @ 10 kt
Visibility20 sm
CeilingNone
Temperature / Dew Point41 C
Altimeter30.00 inHg
Observation Time17:00
Weather SourceWFAC