Overall Trends
Total, fatal, and serious accidents in the selected range.
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
Search everything
Fast key and full-text search with live filters, watches, and precise metadata.
Use quotes for exact phrase matches (for example "fuel selector valve").
Featured 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…
High-signal investigations
Major cases, deep-report coverage, and investigation media across decades of NTSB history.
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 manufacturersAirports
More airportsOperators
More operatorsAbout
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
September 8, 1989 · Piper PA-31-350 · N3554P
Monument Valley, UT
Overview
Report Status
Probable Cause
Event Type
Accident
Date
September 8, 1989
Injury Outcomes
No injuries (9 uninjured)
Location
Monument Valley, UT
Aircraft
Piper PA-31-350
Tail Number
N3554P
Operator
Aviation Services West
Injuries
None
Aircraft Damage
Substantial
NTSB Number
DEN89LA224
TWO ACFT THAT LANDED AHEAD OF THIS FLIGHT REPORTED WINDSHEAR ON FINAL APPROACH. THE PLT SAID THAT 1 MILE FROM THE THRESHOLD, THE FLIGHT ENCOUNTERED A 15 KT INCREASE IN AIRSPEED, FOLLOWED BY A 15 KT DECREASE IN AIRSPEED. THE PLT SAID THE FLIGHT THEN RETURNED TO A NORMAL APPROACH PROFILE & SPEED. THEN, ON SHORT FINAL, HE HEARD THE STALL HORN AND ADVANCED BOTH THROTTLES FULL FOWARD. THE PLANE ENTERED A STEEP SINK RATE. THE PLANE STRUCK A SAND MOUND WITH THE RIGHT LANDING GEAR. THE PLT WAS ABLE TO RECOVER AND LANDED WITHOUT FURTHER INCIDENT.
NTSB Probable Cause
THE PILOT'S FAILURE TO ADEQUATELY COMPENSATE FOR WINDSHEAR.
Full Narrative
TWO ACFT THAT LANDED AHEAD OF THIS FLIGHT REPORTED WINDSHEAR ON FINAL APPROACH. THE PLT SAID THAT 1 MILE FROM THE THRESHOLD, THE FLIGHT ENCOUNTERED A 15 KT INCREASE IN AIRSPEED, FOLLOWED BY A 15 KT DECREASE IN AIRSPEED. THE PLT SAID THE FLIGHT THEN RETURNED TO A NORMAL APPROACH PROFILE & SPEED. THEN, ON SHORT FINAL, HE HEARD THE STALL HORN AND ADVANCED BOTH THROTTLES FULL FOWARD. THE PLANE ENTERED A STEEP SINK RATE. THE PLANE STRUCK A SAND MOUND WITH THE RIGHT LANDING GEAR. THE PLT WAS ABLE TO RECOVER AND LANDED WITHOUT FURTHER INCIDENT.
Flight
Event TypeAccident
Event Time09:50 MDT
Nearest AirportMonument Valley (0nm N)
Runway16
Runway Length3100 ft
Runway Width75 ft
Flight Plan FiledCvfr
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftPiper PA-31-350
Tail NumberN3554P
Aircraft CategoryAir
DamageSubstantial
OperatorAviation Services West
Operating RulePart 135
Engines2
Engine TypeReciprocating
Engine DetailsLycoming · TIO-540-J2BD · Reciprocating · 350
Seats10
People & Injuries
Injury SummaryNo injuries (9 uninjured)
Fatal0
Serious0
Minor0
Uninjured9
Total9
Crew 1Age 30 · First Class
Conditions
ConditionsVMC
LightDaylight
Wind10 kt, gusting 25 kt
Visibility50 sm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter0
Weather SourcePILO