Narrative:

There is so much tar build up on 28L in the first 3;000 feet that it is difficult to see the runway centerline; even in the day.

Google
 

Original NASA ASRS Text

Title: B757 First Officer believes that the rubber build up on Runway 28L at SFO is excessive and needs to be removed.

Narrative: There is so much tar build up on 28L in the first 3;000 feet that it is difficult to see the runway centerline; even in the day.

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.