NTSB Reports
Aviation Safety Intelligence
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.

Get the iPhone App
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

April 19, 1991 · Cessna T210M · N761CM

Littleton, CO

Overview

Report Status
Probable Cause
Event Type
Accident
Date
April 19, 1991
Injury Outcomes
2 injuries (2 serious injuries)
Location
Littleton, CO
Aircraft
Cessna T210M
Tail Number
N761CM
Operator
Denver Air Center
Injuries
Serious
Aircraft Damage
Destroyed
NTSB Number
DEN91FA061

THE TURBOCHARGER FAILED DURING CLIMB TO CRUISE AND THE PILOT IMPROPERLY SELECTED HIGH BOOST AND FULL RICH MIXTURE, CAUSING A TOTAL LOSS OF POWER. IMC PREVAILED AND THE PILOT WAS INITIALLY VECTORED TOWARDS A DISTANT AIRPORT, THEN VECTORED TOWARDS A CLOSER AIRSTRIP. THE PILOT MADE A FORCED LANDING ON A RESIDENTIAL STREET. THE AIRPLANE COLLIDED WITH WIRES, TREES, AND A HOUSE, THEN BURNED. A POST-ACCIDENT EXAMINATION OF THE TURBOCHARGER DISCLOSED IMPROPER REASSEMBLY BY THE OVERHAUL FACILITY.

NTSB Probable Cause

IMPROPER REASSEMBLY OF THE OVERHAULED TURBOCHARGER BY MAINTENANCE PERSONNEL, AND THE PILOT'S IMPROPER USE OF THE MIXTURE CONTROL AND BOOST PUMP. FACTORS RELATED TO THE ACCIDENT WERE: THE ADVERSE WEATHER CONDITIONS AND UNSUITABLE TERRAIN IN THE EMERGENCY LANDING AREA.

Full Narrative

THE TURBOCHARGER FAILED DURING CLIMB TO CRUISE AND THE PILOT IMPROPERLY SELECTED HIGH BOOST AND FULL RICH MIXTURE, CAUSING A TOTAL LOSS OF POWER. IMC PREVAILED AND THE PILOT WAS INITIALLY VECTORED TOWARDS A DISTANT AIRPORT, THEN VECTORED TOWARDS A CLOSER AIRSTRIP. THE PILOT MADE A FORCED LANDING ON A RESIDENTIAL STREET. THE AIRPLANE COLLIDED WITH WIRES, TREES, AND A HOUSE, THEN BURNED. A POST-ACCIDENT EXAMINATION OF THE TURBOCHARGER DISCLOSED IMPROPER REASSEMBLY BY THE OVERHAUL FACILITY.

Flight

Event TypeAccident
Event Time08:40 MDT
Nearest Airport0nm N
Runway0
Runway Length0
Runway Width0
Flight Plan FiledIFR
Aircraft FireGrd
Aircraft ExplosionGrd

Aircraft

AircraftCessna T210M
Tail NumberN761CM
Aircraft CategoryAir
DamageDestroyed
OperatorDenver Air Center
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · TSIO-520-R-1A · Reciprocating · 310
Seats6

People & Injuries

Injury Summary2 injuries (2 serious injuries)
Fatal0
Serious2
Minor0
Uninjured0
Total2
Crew 1Age 49 · Second Class

Conditions

ConditionsIMC
LightDaylight
Wind7°
Ceiling100 ft
Temperature / Dew Point37 C / 36 C
Altimeter0
Observation Time14:46
Weather SourceWFAC

External Links

Appendix: Source Data