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

August 3, 1991 · Piper PA-31-310 · N504DB

Byron, CA

Overview

Report Status
Probable Cause
Event Type
Accident
Date
August 3, 1991
Injury Outcomes
No injuries (4 uninjured)
Location
Byron, CA
Aircraft
Piper PA-31-310
Tail Number
N504DB
Operator
Ricardo Barbera
Injuries
None
Aircraft Damage
Substantial
NTSB Number
LAX91LA343

THE CERTIFICATED AIRLINE TRANSPORT PILOT AND THREE PASSENGERS WERE ON A PERSONAL CROSS COUNTRY FLIGHT, WHICH WAS THE THIRD FLIGHT OF THE DAY. THE PILOT REPORTED THAT THE AIRPLANE'S FUEL TANKS HAD BEEN FILLED PRIOR TO BEGINNING THE FLIGHTS. WHEN THE AIRPLANE WAS ABOUT 40 MILES SHORT OF THE DESTINATION, BOTH ENGINES SUSTAINED A TOTAL LOSS OF POWER DUE TO FUEL EXHAUSTION. DURING THE ENSUING EMERGENCY LANDING THE AIRPLANE LANDED 400 FEET SHORT OF A SMALL AIRPORT RUNWAY, COLLIDED WITH A FENCE AND DITCH, AND SHEARED OFF THE LANDING GEAR. NO EVIDENCE OF FUEL LEAKAGE WAS FOUND AT THE FUEL CAPS OR FUEL DRAINS.

NTSB Probable Cause

THE PILOT'S FAILURE TO REFUEL THE AIRPLANE AND HIS MISJUDGING THE DISTANCE TO THE RUNWAY.

Full Narrative

THE CERTIFICATED AIRLINE TRANSPORT PILOT AND THREE PASSENGERS WERE ON A PERSONAL CROSS COUNTRY FLIGHT, WHICH WAS THE THIRD FLIGHT OF THE DAY. THE PILOT REPORTED THAT THE AIRPLANE'S FUEL TANKS HAD BEEN FILLED PRIOR TO BEGINNING THE FLIGHTS. WHEN THE AIRPLANE WAS ABOUT 40 MILES SHORT OF THE DESTINATION, BOTH ENGINES SUSTAINED A TOTAL LOSS OF POWER DUE TO FUEL EXHAUSTION. DURING THE ENSUING EMERGENCY LANDING THE AIRPLANE LANDED 400 FEET SHORT OF A SMALL AIRPORT RUNWAY, COLLIDED WITH A FENCE AND DITCH, AND SHEARED OFF THE LANDING GEAR. NO EVIDENCE OF FUEL LEAKAGE WAS FOUND AT THE FUEL CAPS OR FUEL DRAINS.

Flight

Event TypeAccident
Event Time19:58 PDT
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftPiper PA-31-310
Tail NumberN504DB
Aircraft CategoryAir
DamageSubstantial
OperatorRicardo Barbera
Operating RulePart 91
Engines2
Engine TypeReciprocating
Engine DetailsLycoming · TI0-540-A2B · Reciprocating · 310
Seats8

People & Injuries

Injury SummaryNo injuries (4 uninjured)
Fatal0
Serious0
Minor0
Uninjured4
Total4
Crew 1Age 43 · First Class

Conditions

ConditionsVMC
LightDusk
Wind260° @ 11 kt
Visibility20 sm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter29.00 inHg
Observation Time02:46
Weather SourceWFAC

Appendix: Source Data