Narrative:

At cruise altitude captains front window cracked with a loud sound. Crack had multiple fingers and covered about 80% of the window. I [advised ATC] and requested immediate descent and return to kden. Pressurization system showed normal indications the entire flight. We accomplished window heat ecam and cracked window checklist in the QRH. I informed the flight attendants and passengers of the situation and advised it would be a normal approach and landing. Captain's visibility was impaired so I gave controls to first officer and he performed the landing.

Google
 

Original NASA ASRS Text

Title: A319 crew reported that the Captain's front window cracked at cruise altitude. The crew returned to the departure airport.

Narrative: At cruise altitude Captains front window cracked with a loud sound. Crack had multiple fingers and covered about 80% of the window. I [advised ATC] and requested immediate descent and return to KDEN. Pressurization system showed normal indications the entire flight. We accomplished Window Heat ecam and Cracked Window checklist in the QRH. I informed the flight attendants and passengers of the situation and advised it would be a normal approach and landing. Captain's visibility was impaired so I gave controls to first officer and he performed the landing.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.