Narrative:

While leveling at 4;000 feet; an object struck our aircraft and became stuck. The object appeared to be a thick rubber or plastic strip; approximately 3-4 feet in length and was semi-rigid. The object appeared to be stuck just forward of the captain's side windscreen and was beating against the windscreen. We decided to return as we were unsure of any damage aside from the scratching on the windscreen. We requested this from approach and decided not to declare an emergency at the time. Once transferred to tower we decided to declare an emergency. All aircraft controls and functions appeared normal.

Google
 

Original NASA ASRS Text

Title: SF340 flight crew reports striking an unknown object during climbout which becomes lodged on the left windshield ice guard. A decision to return is reached but the object gradually disintegrates during the approach and normal landing.

Narrative: While leveling at 4;000 feet; an object struck our aircraft and became stuck. The object appeared to be a thick rubber or plastic strip; approximately 3-4 feet in length and was semi-rigid. The object appeared to be stuck just forward of the Captain's side windscreen and was beating against the windscreen. We decided to return as we were unsure of any damage aside from the scratching on the windscreen. We requested this from approach and decided not to declare an emergency at the time. Once transferred to Tower we decided to declare an emergency. All aircraft controls and functions appeared normal.

Data retrieved from NASA's ASRS site as of April 2012 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.