N/A Airport
Aircraft Accident/Incident Report

Middletown, Ohio 45044
Saturday, September 20, 2014 8:57 EDT

NTSB Narrative Summary Released at Completion of Accident

On September 20, 2014, about 0857 eastern daylight time, an experimental amateur-built Manweiler Acro Sport II airplane, N94SM, impacted buildings and terrain near Middletown, Ohio, and a ground fire subsequently occurred. Both airplane occupants were private pilots and were fatally injured. The airplane sustained substantial damage. The airplane was registered to and operated by Biplane Crazy LLC under the provisions of 14 Code of Federal Regulations Part 91 as a personal flight. Day visual flight rules conditions prevailed for the flight, which did not operate on a flight plan. The local flight originated from the Butler County Regional Airport-Hogan Field (HAO), near Hamilton, Ohio, about 0830. The airplane was observed in aerobatic maneuvers during the flight. The pilot in the front seat held a Federal Aviation Administration (FAA) private pilot certificate with airplane single engine land and instrument airplane ratings. He held a FAA Third Class Medical Certificate issued in November of 2013. The pilot in the rear seat held a FAA private pilot certificate with an airplane single engine land rating. He was issued a FAA Third Class Medical Certificate in June of 2008. N94SM was a plans-built, experimental, amateur-built Manweiler Acro Sport II airplane with serial number 733. The airplane's plan included a short wing span biplane design with a conventional tail wheel configuration, open cockpits, and faring covered fixed main landing gear. Its structure was a fabric-covered steel tube fuselage and empennage group with a wood wing structure. A 200-horsepower Lycoming IO-360-A1A engine powered the airplane. At 0853, the recorded weather at HAO was: Wind calm, visibility 6 statute miles; present weather mist; sky condition few clouds at 4,700 feet; temperature 16 degrees C; dew point 13 degrees C; altimeter 30.10 inches of mercury. The airplane impacted buildings about 200 feet northeast of the intersection of Willow Creek Drive and Sunrise View Circle. The airplane subsequently impacted terrain where a ground fire occurred. The Butler County Coroner was asked to conduct an autopsy on both pilots to include toxicological testing.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 9/20/2014
Event Day of the Week Saturday
Time of Event 857
Event Time Zone Eastern Daylight Time
Event City Middletown
Event State OHIO
Event Country --
Zipcode of the event site 45044
Event Date Year 2014
Event Date Month 9
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 392506N
Event Location Longitude 0842145W
Event Location Airport N/A
Event Location Nearest Airport ID --
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 853 Eastern Daylight Time
Direction of event from weather observation facility (degrees) 247
Weather Observation Facility ID KHAO
Elevation of weather observation facility 634
Distance of event from weather observation facility (units?) 8
Time Zone of the weather observation EDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height 4700
Sky/Lowest/Cloud Conditions Few
Sky Condition for Lowest Ceiling --
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 6
Air Temperature at event time (in degrees celsius) 16
Dew Point at event time (in degress fahrenheit) 13
Wind Direction (degrees magnetic) --
Variable Wind Indicator --
Wind Speed (knots) --
Wind Velocity Indicator Calm
Wind Gust Indicator --
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.1
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report KHAO 201253Z AUTO 00000KT 6SM BR FEW047 16/13 A301
Event Highest Injury Fatal
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal 2
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 2
Investigating Agency NTSB
NTSB Docket Number (internal use) --
NTSB Notification Source FAA-AGL-ROC
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Sep 23 2014 4:30PM
User who most recently changed record male
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N94SM
NTSB Number CEN14LA507
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Substantial
Aircraft Fire Ground
Aircraft Explosion None
Aircraft Manufacturer's Full Name MANWEILLER
Aircraft Model ACRO SPORT II
Aircraft Series Identifier --
Aircraft Serial Number 733
Certified Max Gross Weight --
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? Yes
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 2
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection --
Date of Last Inspection --
Airframe hours since last inspection --
Airframe Hours --
ELT Installed Unknown
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name Biplane Crazy, LLC
Aircraft Owner Street Address --
Aircraft Owner City Hamilton
Aircraft Owner State OH
Aircraft Owner Country USA
Aircraft Owner Zipcode 45011
Operator is an individual? No
Operator Name Biplane Crazy, LLC
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address --
Operator City Hamilton
Operator State OH
Operator Country USA
Operator Zip code 45011
Operator Code --
Owner has at least one certificate None
Other Operator of large aircraft? --
Certified for Part 133 or 137 Operation --
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) Personal
Second Pilot on Board Yes
Departure Point Same as Event No
Departure Airport Code HAO
Departure City HAMILTON
Departure State OH
Departure Country USA
Departure Time 830
Departure Time Zone EDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code HAO
Destination City HAMILTON
Destination State OH
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Sep 22 2014 5:31PM
User who most recently changed record male
Since inspection or accident --
Event Location Runway Number and Location N/A
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --