As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER ROTATION MASTER CAUTION, HYD PRESS ON AND ATTENUATOR UNLOCKED RT ILLUMINATED. THE CREW SELECTED STOW WITH NO EFFECT AND THE ATTENUATOR COULD BE HEARD OPENING AND CLOSING IN FLIGHT. CREW NOTIFIED TOWER THEY HAD AN EMERGENCY AND REQUESTED RETURN TO ROCHESTER AIRPORT. AIRCRAFT LANDED UNEVENTFUL AND IS CURRENTLY BEING CHECKED BY LOCAL MAINTENANCE VENDOR. THRUST ATTENUATORS MEL'D AND AIRCRAFT RELOCATED TO REPAIR FACILITY.