Narrative:

This was a quick turn on a scheduled flight cle atl cle. At some point 1 flight attendant left the aircraft to make a phone call. Aircraft was boarded. Ground security coordinator indicated all was well and ready to close. Captain agreed to close if flight attendants were ready. Flight service manager agreed and door was closed. It was assumed that the third flight attendant was on board, perhaps in the bathroom. Error was discovered as aircraft pushed back. Returned to gate. Picked up flight attendant and departed.

Google
 

Original NASA ASRS Text

Title: ACFT IS PUSHED BACK FROM THE GATE WHILE 1 OF THE CABIN ATTENDANTS IS STILL IN THE TERMINAL.

Narrative: THIS WAS A QUICK TURN ON A SCHEDULED FLT CLE ATL CLE. AT SOME POINT 1 FLT ATTENDANT LEFT THE ACFT TO MAKE A PHONE CALL. ACFT WAS BOARDED. GND SECURITY COORDINATOR INDICATED ALL WAS WELL AND READY TO CLOSE. CAPT AGREED TO CLOSE IF FLT ATTENDANTS WERE READY. FLT SVC MGR AGREED AND DOOR WAS CLOSED. IT WAS ASSUMED THAT THE THIRD FLT ATTENDANT WAS ON BOARD, PERHAPS IN THE BATHROOM. ERROR WAS DISCOVERED AS ACFT PUSHED BACK. RETURNED TO GATE. PICKED UP FLT ATTENDANT AND DEPARTED.

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.