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
Featured Report

Loading…

Loading featured report…

Loading…
Open 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…

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 manufacturers

Airports

More airports

Operators

More operators

About

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 21, 1991 · Cessna 172RG/A · N5247U

Vacaville, CA

Overview

Report Status
Probable Cause
Event Type
Accident
Date
July 21, 1991
Injury Outcomes
2 injuries (2 minor injuries)
Location
Vacaville, CA
Aircraft
Cessna 172RG/A
Tail Number
N5247U
Operator
Cable Air
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
LAX91LA285

BOTH PILOTS STATED THAT THE FLIGHT WAS UNEVENTFUL AND EVERYTHING IN THE AIRCRAFT WAS WORKING. THE APPROACH AND LANDING WAS NORMAL. THE WIND WAS CALM. AFTER TOUCHDOWN THE FLAPS WERE RETRACTED, THE CARBURETOR HEAT WAS PUSHED TO COLD AND THE COWL FLAPS WERE OPENED. AT THAT POINT THE AIRCRAFT STARTED TO VEER OFF TO THE RIGHT. THE PILOT STATED AS THE TURN EXAGGERATED HE APPLIED MORE BRAKE PRESSURE WITHOUT EFFECT. THE PILOT CALLED FOR ASSISTANCE FROM THE INSTRUCTOR PILOT. THE INSTRUCTOR PILOT WAS UNABLE TO REGAIN DIRECTIONAL CONTROL. A VISUAL AND FUNCTIONAL EXAMINATION BY AN FAA INSPECTOR DETERMINED THE BRAKES WERE OPERATIONAL.

NTSB Probable Cause

THE PRIVATE PILOT PIC FAILED TO MAINTAIN DIRECTIONAL CONTROL DURING LANDING ROLLOUT. THE CFI PILOT FAILED TO TAKE REMEDIAL ACTION.

Full Narrative

BOTH PILOTS STATED THAT THE FLIGHT WAS UNEVENTFUL AND EVERYTHING IN THE AIRCRAFT WAS WORKING. THE APPROACH AND LANDING WAS NORMAL. THE WIND WAS CALM. AFTER TOUCHDOWN THE FLAPS WERE RETRACTED, THE CARBURETOR HEAT WAS PUSHED TO COLD AND THE COWL FLAPS WERE OPENED. AT THAT POINT THE AIRCRAFT STARTED TO VEER OFF TO THE RIGHT. THE PILOT STATED AS THE TURN EXAGGERATED HE APPLIED MORE BRAKE PRESSURE WITHOUT EFFECT. THE PILOT CALLED FOR ASSISTANCE FROM THE INSTRUCTOR PILOT. THE INSTRUCTOR PILOT WAS UNABLE TO REGAIN DIRECTIONAL CONTROL. A VISUAL AND FUNCTIONAL EXAMINATION BY AN FAA INSPECTOR DETERMINED THE BRAKES WERE OPERATIONAL.

Flight

Event TypeAccident
Event Time10:20 PDT
Nearest AirportNUTTREE (0nm N)
Runway2
Runway Length3800 ft
Runway Width75 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftCessna 172RG/A
Tail NumberN5247U
Aircraft CategoryAir
DamageSubstantial
OperatorCable Air
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-360-F1AL68 · Reciprocating · 180
Seats4

People & Injuries

Injury Summary2 injuries (2 minor injuries)
Fatal0
Serious0
Minor2
Uninjured0
Total2
Crew 1Age 58 · Third Class

Conditions

ConditionsVMC
LightDaylight
WindCalm
Visibility30 sm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter0
Weather SourcePILO

Appendix: Source Data