What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
The PIC of the incident aircraft stated the aircraft was blown out of its chocks and the rudder gust lock was dislodged after a night of severe winds at Pocatello regional airport. The PIC had maintenance personell inspect the aircraft for wind damage and, finding no apparent damage, the aircraft was released for flight. On the date of the incident, the aircraft was dispatched on a 14 CFR § 91 fire fighting mission with the PIC and air attack mission controller on board. Once airborne and climbing through approximately 700' AGL, the PIC noted a complete loss of rudder control, declared an emergency and, using differential engine power for yaw control, returned to land uneventfully. After inspection and tear-down, maintenance personnel determined all of the rivets securing the rudder control torque tube to the mounting collar had been sheared in the previous night's wind storm.
As the FAA filed it
THE PIC OF THE INCIDENT AIRCRAFT STATED THE AIRCRAFT WAS BLOWN OUT OF ITS CHOCKS AND THE RUDDER GUST LOCK WAS DISLODGED AFTER A NIGHT OF SEVERE WINDS AT POCATELLO REGIONAL AIRPORT. THE PIC HAD MAINTENANCE PERSONELL INSPECT THE AIRCRAFT FOR WIND DAMAGE AND, FINDING NO APPARENT DAMAGE, THE AIRCRAFT WAS RELEASED FOR FLIGHT. ON THE DATE OF THE INCIDENT, THE AIRCRAFT WAS DISPATCHED ON A 14 CFR § 91 FIRE FIGHTING MISSION WITH THE PIC AND AIR ATTACK MISSION CONTROLLER ON BOARD. ONCE AIRBORNE AND CLIMBING THROUGH APPROXIMATELY 700' AGL, THE PIC NOTED A COMPLETE LOSS OF RUDDER CONTROL, DECLARED AN EMERGENCY AND, USING DIFFERENTIAL ENGINE POWER FOR YAW CONTROL, RETURNED TO LAND UNEVENTFULLY. AFTER INSPECTION AND TEAR-DOWN, MAINTENANCE PERSONNEL DETERMINED ALL OF THE RIVETS SECURING THE RUDDER CONTROL TORQUE TUBE TO THE MOUNTING COLLAR HAD BEEN SHEARED IN THE PREVIOUS NIGHT'S WIND STORM.