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
July 20, 1982 · Osprey II · N50733
Ogden, UT
Overview
Report Status
Preliminary report
Event Type
Accident
Date
July 20, 1982
Injury Outcomes
1 injury (1 serious injury)
Location
Ogden, UT
Aircraft
Osprey II
Tail Number
N50733
Operator
E B Hummel
Injuries
Serious
Aircraft Damage
Destroyed
NTSB Number
DEN82FTM14
THE PILOT REPORTED THAT DURING TAKEOFF, HE EXPERIENCED A 400 RPM DROP IN THE ENGINE SPEED. HE BEGAN A RIGHT TURN TO LAND ON RUNWAY 04, BUT REPORTEDLY, THE ENGINE THEN STOPPED. THE PILOT INTENDED TO LAND ON THE HULL WITH THE GEAR RETRACTED; HOWEVER, THE PLANE "PANCAKED" ONTO A SMALL RIDGELINE AND WAS BADLY DAMAGED. AN INVESTIGATION REVEALED THAT THE CARBURETOR HEAT CONTROL LEVER WAS IN THE "OFF" (COLD) POSITION, BUT THE CARBURETOR HEAT CONTROL DOOR WAS IN THE HOT POSITION. THE CONTROL CABLE HAD SLIPPED OUT OF POSITION AT THE CLAMP WHICH SECURED IT TO THE ENGINE PYLON. THE ENGINE DRIVEN FUEL PUMP WAS FOUND FRACTURED, BUT NO FUEL STAINS WERE FOUND IN THE AREA OF THE PUMP. LATER, THE ENGINE WAS PREPARED FOR A RUN-UP, AND SUBSEQUENTLY, IT OPERATED NORMALLY. THE DENSITY ALTITUDE WAS ABOUT 9700 FT.
Full Narrative
THE PILOT REPORTED THAT DURING TAKEOFF, HE EXPERIENCED A 400 RPM DROP IN THE ENGINE SPEED. HE BEGAN A RIGHT TURN TO LAND ON RUNWAY 04, BUT REPORTEDLY, THE ENGINE THEN STOPPED. THE PILOT INTENDED TO LAND ON THE HULL WITH THE GEAR RETRACTED; HOWEVER, THE PLANE "PANCAKED" ONTO A SMALL RIDGELINE AND WAS BADLY DAMAGED. AN INVESTIGATION REVEALED THAT THE CARBURETOR HEAT CONTROL LEVER WAS IN THE "OFF" (COLD) POSITION, BUT THE CARBURETOR HEAT CONTROL DOOR WAS IN THE HOT POSITION. THE CONTROL CABLE HAD SLIPPED OUT OF POSITION AT THE CLAMP WHICH SECURED IT TO THE ENGINE PYLON. THE ENGINE DRIVEN FUEL PUMP WAS FOUND FRACTURED, BUT NO FUEL STAINS WERE FOUND IN THE AREA OF THE PUMP. LATER, THE ENGINE WAS PREPARED FOR A RUN-UP, AND SUBSEQUENTLY, IT OPERATED NORMALLY. THE DENSITY ALTITUDE WAS ABOUT 9700 FT.
Flight
Event TypeAccident
Event Time14:00 MDT
Nearest AirportOgden Muni (0nm N)
Runway16
Runway Length5349 ft
Runway Width200 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftOsprey II
Tail NumberN50733
Aircraft CategoryAir
DamageDestroyed
OperatorE B Hummel
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-320 · Reciprocating · 160
Seats2
People & Injuries
Injury Summary1 injury (1 serious injury)
Fatal0
Serious1
Minor0
Uninjured0
Total1
Crew 1Age 70 · Unknown
Conditions
ConditionsVMC
LightDaylight
Wind130° @ 8 kt
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter0