Narrative:

Gear retracted after landing.

Google
 

Original NASA ASRS Text

Title: A Viking 17-30 landing gear collapsed after landing.

Narrative: Gear retracted after landing.

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.