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Page 1 of 2 ERA20FA074
This is preliminary information, subject to change, and may contain errors. Any errors in this report will be corrected when
the final report has been completed.
National Transportation Safety Board
Aviation Accident Preliminary Report
Location: Mechanicsburg, PA Accident Number: ERA20FA074
Date & Time: 01/09/2020, 2029 EST Registration: N450MC
Aircraft: ROBINSON R66 Injuries: 2 Fatal
Flight Conducted Under: Part 91: General Aviation - Personal
On January 9, 2020, about 2029 eastern standard time, a Robinson R66, N450MC,
experienced an in-flight break-up near Mechanicsburg, Pennsylvania. The private pilot and one
passenger were fatally injured and the helicopter was destroyed. The helicopter was operated
under the provisions of title 14 Code of Federal Regulations Part 91 personal flight. Night
visual meteorological conditions prevailed at the time and no flight plan was filed for the flight.
The flight originated about 1958 from Martin State Airport (MTN), Baltimore, Maryland, and
was destined for Buffalo Niagara International Airport (BUF), Buffalo, New York.
According to preliminary air traffic control radar information provided by the Federal Aviation
Administration, after takeoff the helicopter climbed to about 2,300 ft mean sea level (msl) and
proceeded on a north-northwesterly track. The flight remained about that altitude and track
between about 2002 and 2023, when the flight turned left toward the northwest, but remained
at about the same altitude until 2028:53. About that time the helicopter began a descent, which
continued until the last radar target at 2029:17, at an altitude of about 1,150 ft msl.
One witness who was outside about 1,000 ft east of the accident site reported hearing and
seeing a low flying helicopter, which was "struggling to fly." She reported hearing a high-
pitched noise as if the rotor was having difficulty turning. Suddenly she heard a loud "boom"
with a flash of light. At that point the helicopter disappeared from her view.
Another witness who was inside his residence about 800 ft northeast of the accident site
reported hearing a "thumping" sound which slowed. He then heard a loud bang which shook
his house. He immediately went to his back door, then about 30 seconds later he received a text
message from his neighbor alerting him of the helicopter accident. He also reported hearing a
"percussion" sound before the sound of impact.
The helicopter was equipped with a Rolls-Royce Engine Monitoring Unit that was retained for
downloading. Outlying wreckage consisting of a section of main rotor blade, tail rotor
assembly, tailboom, main rotor mast, and other pieces of the helicopter were recovered and
retained for further examination.
Page 2 of 2 ERA20FA074
This is preliminary information, subject to change, and may contain errors. Any errors in this report will be corrected when
the final report has been completed.
Aircraft and Owner/Operator Information
Aircraft Make: ROBINSON Registration: N450MC
Model/Series: R66 No Series Aircraft Category: Helicopter
Amateur Built: No
Operator: On file Operating Certificate(s)
Held:
None
Meteorological Information and Flight Plan
Conditions at Accident Site: Visual Conditions Condition of Light: Night
Observation Facility, Elevation: CXY, 347 ft msl Observation Time: 2030 EST
Distance from Accident Site: 8 Nautical Miles Temperature/Dew Point: -2°C / -10°C
Lowest Cloud Condition: Clear Wind Speed/Gusts, Direction: 7 knots / , 110°
Lowest Ceiling: None Visibility: 10 Miles
Altimeter Setting: 30.67 inches Hg Type of Flight Plan Filed: Unknown
Departure Point: Baltimore, MD (MTN) Destination: Buffalo, NY (BUF)
Wreckage and Impact Information
Crew Injuries: 1 Fatal Aircraft Damage: Destroyed
Passenger Injuries: 1 Fatal Aircraft Fire: None
Ground Injuries: N/A Aircraft Explosion: None
Total Injuries: 2 Fatal Latitude, Longitude: 40.227778, -77.020278
Administrative Information
Investigator In Charge (IIC): Timothy W Monville
Additional Participating Persons: William Gossley; FAA/FSDO; Harrisburg, PA
David A Gerlach; FAA AVP-100; Washington, DC
Thom Webster; Robinson Helicopter Company; Torrance, CA
Jack Johnson; Rolls-Royce Corporation; Indianapolis, IN
Note: The NTSB traveled to the scene of this accident.

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NTSB Preliminary Report on fatal Mechanicsburg, PA helicopter crash

  • 1. Page 1 of 2 ERA20FA074 This is preliminary information, subject to change, and may contain errors. Any errors in this report will be corrected when the final report has been completed. National Transportation Safety Board Aviation Accident Preliminary Report Location: Mechanicsburg, PA Accident Number: ERA20FA074 Date & Time: 01/09/2020, 2029 EST Registration: N450MC Aircraft: ROBINSON R66 Injuries: 2 Fatal Flight Conducted Under: Part 91: General Aviation - Personal On January 9, 2020, about 2029 eastern standard time, a Robinson R66, N450MC, experienced an in-flight break-up near Mechanicsburg, Pennsylvania. The private pilot and one passenger were fatally injured and the helicopter was destroyed. The helicopter was operated under the provisions of title 14 Code of Federal Regulations Part 91 personal flight. Night visual meteorological conditions prevailed at the time and no flight plan was filed for the flight. The flight originated about 1958 from Martin State Airport (MTN), Baltimore, Maryland, and was destined for Buffalo Niagara International Airport (BUF), Buffalo, New York. According to preliminary air traffic control radar information provided by the Federal Aviation Administration, after takeoff the helicopter climbed to about 2,300 ft mean sea level (msl) and proceeded on a north-northwesterly track. The flight remained about that altitude and track between about 2002 and 2023, when the flight turned left toward the northwest, but remained at about the same altitude until 2028:53. About that time the helicopter began a descent, which continued until the last radar target at 2029:17, at an altitude of about 1,150 ft msl. One witness who was outside about 1,000 ft east of the accident site reported hearing and seeing a low flying helicopter, which was "struggling to fly." She reported hearing a high- pitched noise as if the rotor was having difficulty turning. Suddenly she heard a loud "boom" with a flash of light. At that point the helicopter disappeared from her view. Another witness who was inside his residence about 800 ft northeast of the accident site reported hearing a "thumping" sound which slowed. He then heard a loud bang which shook his house. He immediately went to his back door, then about 30 seconds later he received a text message from his neighbor alerting him of the helicopter accident. He also reported hearing a "percussion" sound before the sound of impact. The helicopter was equipped with a Rolls-Royce Engine Monitoring Unit that was retained for downloading. Outlying wreckage consisting of a section of main rotor blade, tail rotor assembly, tailboom, main rotor mast, and other pieces of the helicopter were recovered and retained for further examination.
  • 2. Page 2 of 2 ERA20FA074 This is preliminary information, subject to change, and may contain errors. Any errors in this report will be corrected when the final report has been completed. Aircraft and Owner/Operator Information Aircraft Make: ROBINSON Registration: N450MC Model/Series: R66 No Series Aircraft Category: Helicopter Amateur Built: No Operator: On file Operating Certificate(s) Held: None Meteorological Information and Flight Plan Conditions at Accident Site: Visual Conditions Condition of Light: Night Observation Facility, Elevation: CXY, 347 ft msl Observation Time: 2030 EST Distance from Accident Site: 8 Nautical Miles Temperature/Dew Point: -2°C / -10°C Lowest Cloud Condition: Clear Wind Speed/Gusts, Direction: 7 knots / , 110° Lowest Ceiling: None Visibility: 10 Miles Altimeter Setting: 30.67 inches Hg Type of Flight Plan Filed: Unknown Departure Point: Baltimore, MD (MTN) Destination: Buffalo, NY (BUF) Wreckage and Impact Information Crew Injuries: 1 Fatal Aircraft Damage: Destroyed Passenger Injuries: 1 Fatal Aircraft Fire: None Ground Injuries: N/A Aircraft Explosion: None Total Injuries: 2 Fatal Latitude, Longitude: 40.227778, -77.020278 Administrative Information Investigator In Charge (IIC): Timothy W Monville Additional Participating Persons: William Gossley; FAA/FSDO; Harrisburg, PA David A Gerlach; FAA AVP-100; Washington, DC Thom Webster; Robinson Helicopter Company; Torrance, CA Jack Johnson; Rolls-Royce Corporation; Indianapolis, IN Note: The NTSB traveled to the scene of this accident.