Crj-900 first officer reported the cockpit window cracked on approach to landing.

Attributes
ACN	1650981
Time
Date	201906
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Regional Jet 900 (CRJ900)
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Flight Plan	IFR
Component
Aircraft Component	Cockpit Window
Person 1
Function	Pilot Flying First Officer
Qualification	Flight Crew Instrument Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Less Severe

Narrative:

During flight we were on final approach to runway xxr. At approximately 200 feet above ground level; I heard a loud bang and saw some motion or light refraction at the captain's window. I looked over to the left and noticed the captain's front window was cracked. ATC was notified of the cracked window. We landed normally and taxied to the gate. During post flight no evidence of a bird strike was found. We were unable to determine the cause of the cracked window. During post flight no evidence of a bird strike was found.

Original NASA ASRS Text

Title: CRJ-900 First Officer reported the cockpit window cracked on approach to landing.

Narrative: During flight we were on final approach to Runway XXR. At approximately 200 feet above ground level; I heard a loud bang and saw some motion or light refraction at the Captain's window. I looked over to the left and noticed the Captain's front window was cracked. ATC was notified of the cracked window. We landed normally and taxied to the gate. During post flight no evidence of a bird strike was found. We were unable to determine the cause of the cracked window. During post flight no evidence of a bird strike was found.

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.