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

March 27, 1991 · Beech 58P · N27L

Vail, AZ

Overview

Report Status
Probable Cause
Event Type
Accident
Date
March 27, 1991
Injury Outcomes
2 injuries (2 fatalities)
Location
Vail, AZ
Aircraft
Beech 58P
Tail Number
N27L
Operator
Paul D Dempsey
Injuries
Fatal
Aircraft Damage
Destroyed
NTSB Number
LAX91FA143

THE OWNER/PILOT HAD PURCHASED THE AIRPLANE IN MINNESOTA, AND HAD HIRED AN INSTRUCTOR PILOT WITH 1000 HOURS IN TYPE TO FLY BACK TO ARIZONA WITH HIM, AND THEN TO FLY EACH DAY WITH HIM UNTIL HE BECAME QUALIFIED AND PROFICIENT IN THE AIRPLANE. RADAR TRACKING DATA INDICATED A ROUTE TO THE EAST PRACTICE AREA AFTER DEPARTURE WHERE THE AIRPLANE MANEUVERED BETWEEN 5400 AND 7300 FEET MSL. TERRAIN ELEVATION IN THE AREA IS ABOUT 3000 FEET MSL. RADAR DATA WAS RECORDED FOR 47 MINUTES. AT A POINT WHERE GROUND SPEED WAS INDICATED TO BE 72 KNOTS, THE AIRPLANE STARTED A RAPID DESCENT AND WAS LOST FROM RADAR AT 4100 FEET MSL. WITNESSES REPORTED SEEING THE AIRPLANE SPINNING CLOCKWISE IN THE PRACTICE AREA. THE LANDING GEAR AND FLAPS WERE FOUND IN THE DOWN POSITION.

NTSB Probable Cause

THE FAILURE OF BOTH PILOTS TO MAINTAIN CONTROL OF THE AIRPLANE.

Full Narrative

THE OWNER/PILOT HAD PURCHASED THE AIRPLANE IN MINNESOTA, AND HAD HIRED AN INSTRUCTOR PILOT WITH 1000 HOURS IN TYPE TO FLY BACK TO ARIZONA WITH HIM, AND THEN TO FLY EACH DAY WITH HIM UNTIL HE BECAME QUALIFIED AND PROFICIENT IN THE AIRPLANE. RADAR TRACKING DATA INDICATED A ROUTE TO THE EAST PRACTICE AREA AFTER DEPARTURE WHERE THE AIRPLANE MANEUVERED BETWEEN 5400 AND 7300 FEET MSL. TERRAIN ELEVATION IN THE AREA IS ABOUT 3000 FEET MSL. RADAR DATA WAS RECORDED FOR 47 MINUTES. AT A POINT WHERE GROUND SPEED WAS INDICATED TO BE 72 KNOTS, THE AIRPLANE STARTED A RAPID DESCENT AND WAS LOST FROM RADAR AT 4100 FEET MSL. WITNESSES REPORTED SEEING THE AIRPLANE SPINNING CLOCKWISE IN THE PRACTICE AREA. THE LANDING GEAR AND FLAPS WERE FOUND IN THE DOWN POSITION.

Flight

Event TypeAccident
Event Time16:05 MST
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireGrd
Aircraft ExplosionGrd

Aircraft

AircraftBeech 58P
Tail NumberN27L
Aircraft CategoryAir
DamageDestroyed
OperatorPaul D Dempsey
Operating RulePart 91
Engines2
Engine TypeReciprocating
Engine DetailsContinental · TSIO-520-WB · Reciprocating · 325
Seats6

People & Injuries

Injury Summary2 injuries (2 fatalities)
Fatal2
Serious0
Minor0
Uninjured0
Total2
Crew 1Age 43 · Second Class

Conditions

ConditionsVMC
LightDaylight
Wind220° @ 21 kt
Visibility30 sm
CeilingBroken clouds 8500 ft
Temperature / Dew Point0 C / 0 C
Altimeter0
Observation Time22:50
Weather SourceWFAC

Appendix: Source Data