Tuesday, May 24, 2022

Magni M24 Orion Plus, N590DM: Fatal accident occurred May 22, 2022 at Cape Girardeau Regional Airport (KCGI), Scott County, Missouri

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. 

The National Transportation Safety Board traveled to the scene of this accident. 

Additional Participating Entities: 
Federal Aviation Administration / Flight Standards District Office; St. Louis, Missouri
Magni Gyro; St. Genevieve, Missouri

Location: Cape Girardeau, Missouri
Accident Number: WPR22FA184
Date and Time: May 22, 2022, 08:03 Local 
Registration: N590DM
Injuries: 1 Fatal
Flight Conducted Under: Part 91: General aviation - Personal

On May 22, 2022, about 0803 central daylight time, an experimental amateur-built M24 Orion Plus gyroplane, N590DM, was substantially damaged when it was involved in an accident near Cape Girardeau, Missouri. The private pilot was fatally injured. The gyroplane was operated as a Title 14 Code of Federal Regulations Part 91 personal flight.

A witness reported that the pilot was ferrying the gyroplane to his home in South Dakota on a cross-country flight and had planned a stopover at Cape Girardeau Regional Airport (CGI). According to preliminary air traffic control (ATC) audio, the pilot informed the control tower of his intent to taxi to runway 02. After the controller issued taxi instructions, the pilot requested progressive assistance to the departure runway. The pilot subsequently departed runway 02 to the northwest. During the gyroplane’s climb-out, the pilot informed the controller that he wanted to return to the airport and the controller cleared him to land on runway 02. Witnesses stated that the gyroplane made a left turn towards the downwind leg of the airport traffic pattern for runway 02. About this time a witness heard a “crack” coming from the direction of the gyroplane. The same witness immediately observed the gyroplane descend rapidly towards the ground. The controller reported that the gyroplane appeared to enter a spin during the descent. Witnesses estimated that the gyroplane was between 750 ft and 1,000 ft above ground level before it descended rapidly and impacted the ground.

The gyroplane impacted mud about 1,000 ft west of the departure end of runway 10 at a field elevation of about 330 ft mean sea level. All major structures were accounted for at the accident site. The main wreckage, comprised of the fuselage, rotor, engine, and empennage, was oriented on a northwest heading. A section of the right horizontal stabilizer had separated from the main wreckage and was located 171 ft south of the main wreckage. The engine was partially submerged in the mud along with two of the gyroplane’s four propeller blades. The other two propeller blades were visible above the surface, and both had separated about midspan. Both rotor blades were attached at the rotor hub and exhibited similar impact signatures about 3 ft from their outboard ends. They also displayed black transfer marks about 3 ft from the hub of each blade. One blade displayed blue transfer markings on the bottom of the blade about 3 ft from the outboard end, which corresponded to the paint color of the gyroplane, including the separated right horizontal stabilizer.

Aircraft and Owner/Operator Information

Aircraft Make: BRUCE R PROUSE
Registration: N590DM
Model/Series: M24 ORION PLUS 
Aircraft Category: Helicopter
Amateur Built: Yes
Operator: On file 
Operating Certificate(s) Held: None
Operator Designator Code:

Meteorological Information and Flight Plan

Conditions at Accident Site: VMC
Condition of Light: Day
Observation Facility, Elevation: KCGI,352 ft msl
Observation Time: 07:53 Local
Distance from Accident Site: 1 Nautical Miles
Temperature/Dew Point: 15°C /13°C
Lowest Cloud Condition: Few / 1200 ft AGL 
Wind Speed/Gusts, Direction: 8 knots / 16 knots, 350°
Lowest Ceiling: Overcast / 2900 ft AGL
Visibility: 10 miles
Altimeter Setting: 30.24 inches Hg
Type of Flight Plan Filed: None
Departure Point: Cape Girardeau, MO
Destination: SD

Wreckage and Impact Information

Crew Injuries: 1 Fatal
Aircraft Damage: Substantial
Passenger Injuries: 
Aircraft Fire: None
Ground Injuries: 
Aircraft Explosion: None
Total Injuries: 1 Fatal
Latitude, Longitude: 37.228004,-89.584832

Gyrocopter crashed under unknown circumstances 200 feet off runway. 

Date: 22-MAY-22
Time: 13:01:00Z
Regis#: N590DM
Aircraft Make: MAGNI GYRO
Aircraft Model: M24 ORION PLUS
Event Type: ACCIDENT
Highest Injury: FATAL
Total Fatal: 1 
Flight Crew: 1 fatal
Pax:  0
Activity: PERSONAL
Flight Phase: LANDING (LDG)
Operation: 91
Aircraft Missing: No

Those who may have information that might be relevant to the National Transportation Safety Board (NTSB) investigation may contact them by email witness@ntsb.gov, and any friends and family who want to contact investigators about the accident should email assistance@ntsb.gov. You can also call the NTSB Response Operations Center at 844-373-9922 or 202-314-6290.

Dr. Bruce Prouse
October 22, 1962 - May 22, 2022

Dr. Bruce R. Prouse, age 59 of Sioux Falls, SD passed away suddenly on Sunday, May 22, 2022, in Cape Girardeau, MO.  Mass of Christian Burial will be 11:00 AM Tuesday, May 31, 2022 at Holy Spirit Parish in Sioux Falls.  Visitation will be on Monday, May 30, 2022 at George Boom Funeral Home & On-Site Crematory, Sioux Falls from 5:00-7:00 PM with a Liturgical Wake Service and Holy Rosary beginning at 7:00 PM. 

Bruce and his twin brother Bradley were born October 22, 1962, to James and Edna Prouse in Aberdeen, SD. Bruce and Brad completed the Prouse family of nine. The Prouse children were often described as “five kids and the twins.” He was baptized and confirmed at Trinity Lutheran Church. After graduating from Aberdeen Central High School, Bruce attended Augustana College where he earned a B.A. in Chemistry and Mathematics. Bruce next attended University of South Dakota School of Medicine, graduating as an MD in 1990. Bruce completed an Internal Medicine Internship at University of South Dakota Affiliated Hospital. He then went to University of Nebraska Medical Center to complete an Internal Medicine Residency and Pulmonary/Critical Care Medicine Fellowship. After practicing Pulmonary and Critical Care Medicine for four years at Hannibal Clinic, Inc. in Hannibal, MO and University Physicians Clinic in Sioux Falls, SD, Bruce returned to training and completed a Pathology Residency at University of South Dakota School of Medicine followed by an Anatomical Pathology Fellowship at University of Wisconsin Hospitals and Clinics. Since 2005, Dr. Prouse practiced as an AP/CP board certified pathologist with Physicians Laboratory and Avera McKennan Hospital. He was the Vice President and a partner of his pathology practice group, Physicians Laboratory. He was the Clinical Vice President of Avera Laboratory Service Line and served as a medical director to several laboratories including Avera Heart Hospital of SD, Avera Marshall Hospital, Avera Tyler Healthcare Center, Avera Granite Falls, and Avera Medical Group in Marshall.

Bruce married Diane Bottolfson on May 13, 1990, at St. Agnes Catholic Church in Vermillion, SD. Bruce joined the Catholic Church on Easter 1993 at Holy Cross Catholic Church in Omaha, NE. Their daughters Mary and Anne were born in Omaha, NE, and Grace was born in Hannibal, MO. Since 1998, Bruce was an active member at Holy Spirit Catholic Church. 

Dr. Prouse had a love of learning, demonstrated by spending eleven years in residency and fellowship training. Bruce was a passionate lifelong learner, who continued studying medicine and exploring his many hobbies. In pursuit of his woodworking passion, Bruce designed and created one of his prized possessions, a handmade bent wood canoe. Bruce loved aviation and being a pilot. Listening to country music and attending concerts was also a favorite activity. Many memories were made traveling - the most memorable in May 2021, in Marco Island, FL. Surrounded by family and friends, Bruce proudly walked his eldest daughter down the aisle, gave a Father of the Bride speech, and enjoyed a father/daughter dance.

Grateful for having shared his life are his wife, Dr. Diane Bottolfson of Sioux Falls, SD; their three daughters, Mary (Allen) Khayat of Arlington, VA, Anne Prouse and fiancĂ©, Nicolas Ageton of Sioux Falls, SD, and Grace Prouse of Dallas, TX; his mother, Edna Prouse of Aberdeen, SD; twin brother, Bradley Prouse of Hesperus, CO; brother, Dale (Nancy) Prouse of Morrison, CO; sisters, Diana Daly of Aberdeen, SD, Marcy (Stephen) Nordhus of Minnetonka, MN, and Nancy (Bernard) Hilla of Clearwater, MN; sister-in-law, Kathy Prouse of Aberdeen, SD; his mother-in-law, Mary Bottolfson of Vermillion, SD; sisters-in-law, Rhonda (Tom) Landy of Boynton Beach, FL and Julie (Cullen) Prasek of Watertown, SD; brother-in-law, Michael (Erica) Bottolfson of Vermillion, SD; along with numerous nieces, nephews, aunts, uncles, other relatives, colleagues, and many friends. 

Bruce was preceded in death by his father, James Prouse; brother, Ben Prouse; father-in-law, Leonard Bottolfson; and sister-in-law, Wendy Prouse.


  1. Does anyone have any info on this?

    1. Some more info here:

    2. Dr. Bruce R. Prouse, age 59 of Sioux Falls, SD

  2. NTSB preliminary report is out