What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
At 10:35AM, 8/18/22, privacy data omitted was taxiing into its assigned gate (D1) at Seatac and was being marshaled into the gate. There was a fire truck (port of Seattle) positioned in front of C3 that was responding to an inbound call at C9. The plane was making a 90 degree left turn and as the fire truck was trying to reverse to get completely out of the way of the aircraft. While in the left turn to the gate and as the fire truck was backing up, the right wing scimitar made contact with the driver side window of the fire truck, which shattered the window and bent the tip of the wing. There was a wing walker in place to monitor clearance of the right wing; however, the crew reported that they never received a signal to stop from the marshaler or wing walkers. The crew remained at the aircraft for several minutes, during the deplaning process, and never received any indication from ground crew, fire crew, or operations that a collision had occurred. The capt. did not learn of the collision until arriving home, receiving a call from his base chief pilot and returning to the airport for a debrief.
As the FAA filed it
AT 10:35AM, 8/18/22, ^PRIVACY DATA OMITTED^ WAS TAXIING INTO ITS ASSIGNED GATE (D1) AT SEATAC AND WAS BEING MARSHALED INTO THE GATE. THERE WAS A FIRE TRUCK (PORT OF SEATTLE) POSITIONED IN FRONT OF C3 THAT WAS RESPONDING TO AN INBOUND CALL AT C9. THE PLANE WAS MAKING A 90 DEGREE LEFT TURN AND AS THE FIRE TRUCK WAS TRYING TO REVERSE TO GET COMPLETELY OUT OF THE WAY OF THE AIRCRAFT. WHILE IN THE LEFT TURN TO THE GATE AND AS THE FIRE TRUCK WAS BACKING UP, THE RIGHT WING SCIMITAR MADE CONTACT WITH THE DRIVER SIDE WINDOW OF THE FIRE TRUCK, WHICH SHATTERED THE WINDOW AND BENT THE TIP OF THE WING. THERE WAS A WING WALKER IN PLACE TO MONITOR CLEARANCE OF THE RIGHT WING; HOWEVER, THE CREW REPORTED THAT THEY NEVER RECEIVED A SIGNAL TO STOP FROM THE MARSHALER OR WING WALKERS. THE CREW REMAINED AT THE AIRCRAFT FOR SEVERAL MINUTES, DURING THE DEPLANING PROCESS, AND NEVER RECEIVED ANY INDICATION FROM GROUND CREW, FIRE CREW, OR OPERATIONS THAT A COLLISION HAD OCCURRED. THE CAPT. DID NOT LEARN OF THE COLLISION UNTIL ARRIVING HOME, RECEIVING A CALL FROM HIS BASE CHIEF PILOT AND RETURNING TO THE AIRPORT FOR A DEBRIEF.