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

April 19, 1989 · Cessna 170A · N5414C

Kalispell, MT

Overview

Report Status
Probable Cause
Event Type
Accident
Date
April 19, 1989
Injury Outcomes
No injuries (1 uninjured)
Location
Kalispell, MT
Aircraft
Cessna 170A
Tail Number
N5414C
Operator
Westphal Terry R
Injuries
None
Aircraft Damage
Substantial
NTSB Number
DEN89LA111

THE PLT STATED, 'DURING THE LANDING PHASE THE AIRPLANE STARTED TO ACT LIKE IT WAS IN TURBULENCE. ON CONTACT WITH THE GROUND, I COULDN'T KEEP IT GOING STRAIGHT...'. THE AIRPLANE GROUND LOOPED AND NOSED OVER. POST CRASH EXAMINATION OF THE BRAKES AND RELATED SYSTEM REVEALED NO EVIDENCE OF A MECHANICAL MALFUNCTION. THE WIND AT THE TIME OF THE ACCIDENT WAS LIGHT AND VARIABLE.

NTSB Probable Cause

THE PILOT'S FAILURE TO MAINTAIN CONTROL OF THE AIRPLANE DURING THE LANDING FLARE AND ROLLOUT. CONTRIBUTING TO THE ACCIDENT WAS THE PILOT'S LACK OF PROFICIENCY WITH ONLY 4 HOURS OF FLIGHT TIME IN THE PRECEDING 90 DAY PERIOD.

Full Narrative

THE PLT STATED, 'DURING THE LANDING PHASE THE AIRPLANE STARTED TO ACT LIKE IT WAS IN TURBULENCE. ON CONTACT WITH THE GROUND, I COULDN'T KEEP IT GOING STRAIGHT...'. THE AIRPLANE GROUND LOOPED AND NOSED OVER. POST CRASH EXAMINATION OF THE BRAKES AND RELATED SYSTEM REVEALED NO EVIDENCE OF A MECHANICAL MALFUNCTION. THE WIND AT THE TIME OF THE ACCIDENT WAS LIGHT AND VARIABLE.

Flight

Event TypeAccident
Event Time06:30 MDT
Nearest AirportGlacier Park Int'L (0nm N)
Runway19
Runway Length8000 ft
Runway Width150 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftCessna 170A
Tail NumberN5414C
Aircraft CategoryAir
DamageSubstantial
OperatorWestphal Terry R
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · O-300 · Reciprocating · 145
Seats4

People & Injuries

Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 42 · Third Class

Conditions

ConditionsVMC
LightDaylight
WindCalm
Visibility10 sm
CeilingNone
Temperature / Dew Point50 / 0 C
Altimeter29.00 inHg
Weather SourcePILO

Appendix: Source Data