As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW SEAT BACK LOCK CYLINDER FAILED AND MOUNTING BOLT SHEARED DURING FLIGHT TRAINING, SPIN RECOVERY. PIC SEAT BACK WENT TO HORIZONTAL POSITION. FLIGHT INSTRUCTOR GAINED CONTROL OF AIRCRAFT. UNEVENTFUL LANDING. THIS FACILITY HAS REPLACED 12 OF THESE ASSEMBLIES IN PAST 6 MONTHS AFTER INSPECTION IAW MF SB04-25-02.