Narrative:

Crew left aircraft with an engine running. Actually, a maintenance individual notified crew before they departed aircraft that an engine was still running. Crew had somehow missed this on checklist. No incident occurred.

Google
 

Original NASA ASRS Text

Title: ACR MLG CREW ABOUT TO LEAVE ACFT AT RAMP WHEN CGP GIVES THEM A WAKE UP CALL REGARDING 1 ENG STILL RUNNING.

Narrative: CREW LEFT ACFT WITH AN ENG RUNNING. ACTUALLY, A MAINT INDIVIDUAL NOTIFIED CREW BEFORE THEY DEPARTED ACFT THAT AN ENG WAS STILL RUNNING. CREW HAD SOMEHOW MISSED THIS ON CHKLIST. NO INCIDENT OCCURRED.

Data retrieved from NASA's ASRS site as of July 2007 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.