What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
During a routine flight that departed san bernardino airport and was enroute to Chino hills the pilot began to feel a vibration that became progressively more severe until it became difficult to fly the aircraft. The pilot decided to make a precautionary landing at nearby Chino Airport. After landing an inspection was conducted at which time all three main rotor blades were showing signs of severe delamination so it was determined that the aircraft could not be flown back to home base at san bernardino. This form may be revised as needed at a future date.
As the FAA filed it
DURING A ROUTINE FLIGHT THAT DEPARTED SAN BERNARDINO AIRPORT AND WAS ENROUTE TO CHINO HILLS THE PILOT BEGAN TO FEEL A VIBRATION THAT BECAME PROGRESSIVELY MORE SEVERE UNTIL IT BECAME DIFFICULT TO FLY THE AIRCRAFT. THE PILOT DECIDED TO MAKE A PRECAUTIONARY LANDING AT NEARBY CHINO AIRPORT. AFTER LANDING AN INSPECTION WAS CONDUCTED AT WHICH TIME ALL THREE MAIN ROTOR BLADES WERE SHOWING SIGNS OF SEVERE DELAMINATION SO IT WAS DETERMINED THAT THE AIRCRAFT COULD NOT BE FLOWN BACK TO HOME BASE AT SAN BERNARDINO. THIS FORM MAY BE REVISED AS NEEDED AT A FUTURE DATE.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.