As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) A/C WAS IN CRUISE FLIGHT AT 700 FT, AGL WHEN A SUDDEN VIBRATION BEGAN. THE CREW MADE AN IMMEDIATE LANDING IN A FIELD AND SHUTDOWN. INSPECTION FOUND THAT ONE M/R PENDULUM WEIGHT HAD SEPARATED AND STRUCK A M/R BLADE. THE DAMAGED AREA IS 3 INCHES LONG BY .1250-.2500 INCH WIDE AND A MAX DEPTH OF 0.0025 INCH. THE DAMAGE BLADE 222-015-500-105 S/N AMR06030 TT4840.7 (TC NR 20060921003)