What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Instructor pilot privacy data omitted and student pilot privacy data omitted were in process of a supervised solo. Instructor privacy data omitted could not get the engine started and ran down the battery. The student privacy data omitted was outside the airplane when the the owner of the aircraft connected to the aircraft a jumper cable/battery charger. The charger had an electrical cord which was connected to the building outlet near the airplane. The engine was started and owner was in process of removing the cable while the instructor guarded the throttle and brakes inside the aircraft. The student pilot who was one the ramp, on his own valition, made an attempt to aid the owner, without his knowledge, and remove the electrical cord. privacy data omitted Arm made contact with the propeller in its plan of rotation.privacy data omitted Lost his left arm from the elbow to the hand. The flight instructor shut down the aircraft engine and aided the owner in first aide. The company updated their ground operations manual to include safety concerns regarding operations during abnormal situations.
As the FAA filed it
INSTRUCTOR PILOT ^PRIVACY DATA OMITTED^ AND STUDENT PILOT ^PRIVACY DATA OMITTED^ WERE IN PROCESS OF A SUPERVISED SOLO.INSTRUCTOR ^PRIVACY DATA OMITTED^ COULD NOT GET THE ENGINE STARTED AND RAN DOWN THE BATTERY.THE STUDENT ^PRIVACY DATA OMITTED^ WAS OUTSIDE THE AIRPLANE WHEN THE THE OWNER OF THE AIRCRAFT CONNECTED TO THE AIRCRAFT A JUMPER CABLE/BATTERY CHARGER. THE CHARGER HAD AN ELECTRICAL CORD WHICH WAS CONNECTED TO THE BUILDING OUTLET NEAR THE AIRPLANE. THE ENGINE WAS STARTED AND OWNER WAS IN PROCESS OF REMOVING THE CABLE WHILE THE INSTRUCTOR GUARDED THE THROTTLE AND BRAKES INSIDE THE AIRCRAFT. THE STUDENT PILOT WHO WAS ONE THE RAMP, ON HIS OWN VALITION, MADE AN ATTEMPT TO AID THE OWNER, WITHOUT HIS KNOWLEDGE, AND REMOVE THE ELECTRICAL CORD. ^PRIVACY DATA OMITTED^ ARM MADE CONTACT WITH THE PROPELLER IN ITS PLAN OF ROTATION.^PRIVACY DATA OMITTED^ LOST HIS LEFT ARM FROM THE ELBOW TO THE HAND.THE FLIGHT INSTRUCTOR SHUT DOWN THE AIRCRAFT ENGINE AND AIDED THE OWNER IN FIRST AIDE. THE COMPANY UPDATED THEIR GROUND OPERATIONS MANUAL TO INCLUDE SAFETY CONCERNS REGARDING OPERATIONS DURING ABNORMAL SITUATIONS.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.