What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) N351EV, s/n 2930, AS350-B2 located on high island platform A350. At approximately 11:30 a.m. on 02/26/2005, with light winds (15MPH) the pilot engaged the starter. At approximately 25-35% ng engine speed, he felt a sudden rotor imbalance and immediately shut down. While applying the rotor brake he noticed one blade out of track by about 6 inches (lower). He did not notice any unusual noises but others in the quarters below the deck reported hearing a loud bang. The pilot reported failure of one of the starflex arms. Unable to determine the cause of the starflex failure. Assy will be sent to the manufacturers lab in france. The complete main rotor assy was replaced. Track and balance was accomplished with the aircraft being returned to service.
As the FAA filed it
(-23) N351EV, S/N 2930, AS350-B2 LOCATED ON HIGH ISLAND PLATFORM A350. AT APPROXIMATELY 11:30 A.M. ON 02/26/2005, WITH LIGHT WINDS (15MPH) THE PILOT ENGAGED THE STARTER. AT APPROXIMATELY 25-35% NG ENGINE SPEED, HE FELT A SUDDEN ROTOR IMBALANCE AND IMMEDIATELY SHUT DOWN. WHILE APPLYING THE ROTOR BRAKE HE NOTICED ONE BLADE OUT OF TRACK BY ABOUT 6 INCHES (LOWER). HE DID NOT NOTICE ANY UNUSUAL NOISES BUT OTHERS IN THE QUARTERS BELOW THE DECK REPORTED HEARING A LOUD BANG. THE PILOT REPORTED FAILURE OF ONE OF THE STARFLEX ARMS. UNABLE TO DETERMINE THE CAUSE OF THE STARFLEX FAILURE. ASSY WILL BE SENT TO THE MANUFACTURERS LAB IN FRANCE. THE COMPLETE MAIN ROTOR ASSY WAS REPLACED. TRACK AND BALANCE WAS ACCOMPLISHED WITH THE AIRCRAFT BEING RETURNED TO SERVICE.