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
August 3, 1987 · Bell 206B · N5001Q
Albuquerque, NM
Overview
Report Status
Preliminary report
Event Type
Accident
Date
August 3, 1987
Injury Outcomes
No injuries (1 uninjured)
Location
Albuquerque, NM
Aircraft
Bell 206B
Tail Number
N5001Q
Operator
Donald Ambabo
Injuries
None
Aircraft Damage
Substantial
NTSB Number
DEN87LA206
DURING CRUISE FLT A PARTIAL POWER FAILURE OCCURRED REQUIRING A FULL EMERG AUTOROTATIVE LANDING TO BE CONDUCTED TO AN UNEVEN DIRT AREA. FOLLOWING TOUCHDOWN THE ACFT SLID FORWARD AND THE TAIL ROSE CAUSING THE MAIN ROTOR TO CONTACT THE TAIL BOOM SEVERING THE LAST THREE FEET. THERE WERE NO INJURIES AND THE ACFT SUSTAINED SUBSTANTIAL DAMAGE. THE POWER LOSS WAS DUE TO A SEPARATION OF THE ENG GOVERNOR PYV VALVE CAUSING THE ENG TO DECELERATE TO A BELOW IDLE CONDITION. NO DETERMINATION COULD BE MADE AS TO THE CAUSE OF THE SEPARATION.
Full Narrative
DURING CRUISE FLT A PARTIAL POWER FAILURE OCCURRED REQUIRING A FULL EMERG AUTOROTATIVE LANDING TO BE CONDUCTED TO AN UNEVEN DIRT AREA. FOLLOWING TOUCHDOWN THE ACFT SLID FORWARD AND THE TAIL ROSE CAUSING THE MAIN ROTOR TO CONTACT THE TAIL BOOM SEVERING THE LAST THREE FEET. THERE WERE NO INJURIES AND THE ACFT SUSTAINED SUBSTANTIAL DAMAGE. THE POWER LOSS WAS DUE TO A SEPARATION OF THE ENG GOVERNOR PYV VALVE CAUSING THE ENG TO DECELERATE TO A BELOW IDLE CONDITION. NO DETERMINATION COULD BE MADE AS TO THE CAUSE OF THE SEPARATION.
Flight
Event TypeAccident
Event Time07:30 MDT
Nearest AirportCORONADO (0nm N)
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBell 206B
Tail NumberN5001Q
Aircraft CategoryHeli
DamageSubstantial
OperatorDonald Ambabo
Operating RulePart 91
Engines1
Engine TypeTurboshaft
Engine DetailsAllison · 250-C20B · Turboshaft · 425
Seats5
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 37 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind340° @ 6 kt
Visibility60 sm
CeilingBroken clouds 7500 ft
Temperature / Dew Point70 F / 61 F
Altimeter30.00 inHg
Observation Time12:48
Weather SourceWFAC