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 2, 1987 · Beech 99 · N204BH
Portland, ME
Overview
Report Status
Preliminary report
Event Type
Incident
Date
September 2, 1987
Injury Outcomes
1 injury (1 minor injury), 1 uninjured
Location
Portland, ME
Aircraft
Beech 99
Tail Number
N204BH
Operator
Bar Harbor Airlines
Injuries
Minor
NTSB Number
NYC87IA258
The aircraft was cruising at 2,500 ft with no passengers on board. The co-pilot went into the cabin and noticed a loud hissing noise around the main cabin door. He checked the handle and locking pins and noticed the door was locked. He told the captain, who directed him to take control of the aircraft while the captain went back into the cabin to check the door. The captain said he may have bumped the door and it flew open. He was tangled up in the door cables and stayed with the aircraft. He received minor injuries. The co-pilot made an uneventful landing after declaring an emergency. The door was examined and no problem was found with the door. The aircraft was returned to service without repair. Beech Aircraft Company said there would be a 127 lb force pulling the door outward at 200 KTAS and 2,500 ft. The flight crew had reported they were in normal cruise when the door opened.
Full Narrative
THE ACFT WAS CRUISING AT 2500 FT WITH NO PASSENGERS ON BOARD. THE CO-PILOT WENT INTO THE CABIN AND NOTICED A LOUD HISSING NOISE AROUND THE MAIN CABIN DOOR. HE CHECKED THE HANDLE AND LOCKING PINS AND NOTICED THE DOOR WAS LOCKED. HE TOLD THE CAPTAIN WHO DIRECTED HIM TO TAKE CONTROL OF THE AIRCRAFT AND THE CAPTAIN WENT BACK INTO THE CABIN TO CHECK THE DOOR. THE CAPTAIN SAID HE MAY HAVE BUMPED THE DOOR AND IT FLEW OPEN. HE WAS TANGLED UP IN THE DOOR CABLES AND STAYED WITH THE AIRCRAFT. HE RECEIVED MINOR INJURIES. THE CO-PILOT MADE AN UNEVENTFUL LANDING AFTER DECLARING AN EMERGENCY. THE DOOR WAS EXAMINED AND NO PROBLEM WAS FOUND WITH THE DOOR. THE AIRCRAFT WAS RETURNED TO SERVICE WITHOUT REPAIR. BEECH AIRCRAFT COMPANY SAID THERE WOULD BE A 127 LB FORCE PULLING THE DOOR OUTWARD AT 200 KTAS AND 2500 FT. THE FLIGHT CREW HAD REPORTED THEY WERE IN NORMAL CRUISE WHEN THE DOOR OPENED.
Flight
Event TypeIncident
Event Time19:00 EDT
Nearest Airport0nm N
Runway0
Flight Plan FiledVFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBeech 99
Tail NumberN204BH
Aircraft CategoryAir
OperatorBar Harbor Airlines
Operating RulePart 91
Engines2
Engine TypeTurboprop
Engine DetailsP&W · PT-6-20 · Turboprop · 500
Seats17
People & Injuries
Injury Summary1 injury (1 minor injury), 1 uninjured
Fatal0
Serious0
Minor1
Uninjured1
Total2
Crew 1Age 45 · First Class
Conditions
ConditionsVMC
LightDark Night
Wind260° @ 9 kt
Visibility20 sm
CeilingBroken clouds 25000 ft
Temperature / Dew Point64 F / 46
Altimeter29.00 inHg
Observation Time23:00