What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(.19) On July 21, 2001, at 1145 hours pacific daylight time, a Hughes 269C,N5015V, was substantially damaged when it landed hard and rolled over during an autorotation for training purposes, at the New Jerusalem Airport, Tracy, California. The flight instructor and dual student were not injured. Visual meteorological conditions prevailed for the instructional flight conducted under 14 CFR part 91 by advanced aviation, stockton, California. The helicopter departed stockton metropolitan airport approximately 1045, and no flight plan was filed. The flight instructor was interviewed by an investigator from the national transportation safety board. He stated that he and his student, a commercial pilot training for a flight instructor certificate, were practicing autorotaions when the accident occurred. He said thatthey were in a straight in autorotation to runway 30 at the New Jerusalem Airport. The descent rate was stabilized until 200 feet, when it increased slightly. The student mistimed the flare, causing the helicopter to land hard. He stated that the tail boom hit the ground first in a right yawing moment. The helicopter then rolled to the right, severing the tail boom and allowing the rotor blades to contact the ground. The helicopter came to rest on its right side. The instructor stated that wind shear may have beena factor. He noted that the winds were from 280 degrees at 8 knots with occasional gusts to 14 knots.
As the FAA filed it
(.19) ON JULY 21, 2001, AT 1145 HOURS PACIFIC DAYLIGHT TIME, A HUGHES 269C,N5015V, WAS SUBSTANTIALLY DAMAGED WHEN IT LANDED HARD AND ROLLED OVER DURING AN AUTOROTATION FOR TRAINING PURPOSES, AT THE NEW JERUSALEM AIRPORT, TRACY, CALIFORNIA. THE FLIGHT INSTRUCTOR AND DUAL STUDENT WERE NOT INJURED. VISUAL METEOROLOGICAL CONDITIONS PREVAILED FOR THE INSTRUCTIONAL FLIGHT CONDUCTED UNDER 14 CFR PART 91 BY ADVANCED AVIATION, STOCKTON, CALIFORNIA. THE HELICOPTER DEPARTED STOCKTON METROPOLITAN AIRPORT APPROXIMATELY 1045, AND NO FLIGHT PLAN WAS FILED. THE FLIGHT INSTRUCTOR WAS INTERVIEWED BY AN INVESTIGATOR FROM THE NATIONAL TRANSPORTATION SAFETY BOARD. HE STATED THAT HE AND HIS STUDENT, A COMMERCIAL PILOT TRAINING FOR A FLIGHT INSTRUCTOR CERTIFICATE, WERE PRACTICING AUTOROTAIONS WHEN THE ACCIDENT OCCURRED. HE SAID THATTHEY WERE IN A STRAIGHT IN AUTOROTATION TO RUNWAY 30 AT THE NEW JERUSALEM AIRPORT. THE DESCENT RATE WAS STABILIZED UNTIL 200 FEET, WHEN IT INCREASED SLIGHTLY. THE STUDENT MISTIMED THE FLARE, CAUSING THE HELICOPTER TO LAND HARD. HE STATED THAT THE TAIL BOOM HIT THE GROUND FIRST IN A RIGHT YAWING MOMENT. THE HELICOPTER THEN ROLLED TO THE RIGHT, SEVERING THE TAIL BOOM AND ALLOWING THE ROTOR BLADES TO CONTACT THE GROUND. THE HELICOPTER CAME TO REST ON ITS RIGHT SIDE. THE INSTRUCTOR STATED THAT WIND SHEAR MAY HAVE BEENA FACTOR. HE NOTED THAT THE WINDS WERE FROM 280 DEGREES AT 8 KNOTS WITH OCCASIONAL GUSTS TO 14 KNOTS.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.