Crew left aircraft at gate not knowing that one through passenger was still on board.

Attributes
ACN	235342
Time
Date	199303
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : cvg
State Reference	OH
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	ground : parked
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 25 flight time total : 4000 flight time type : 2000
ASRS Report	235342
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time type : 60
ASRS Report	235343
Events
Anomaly	non adherence : far non adherence other
Independent Detector	other other : unspecified
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	other

Narrative:

Deplaned passenger in cvg, one through passenger deplaned while a second through passenger entered the aft lavatory unnoticed. Flight crew and cabin crew departed aircraft. After returning to aircraft new cabin crew informed flight crew that a through passenger was alone on aircraft for about 15 mins. Episode was uneventful. Crew members should check aircraft for passenger prior to deplaning.

Original NASA ASRS Text

Title: CREW LEFT ACFT AT GATE NOT KNOWING THAT ONE THROUGH PAX WAS STILL ON BOARD.

Narrative: DEPLANED PAX IN CVG, ONE THROUGH PAX DEPLANED WHILE A SECOND THROUGH PAX ENTERED THE AFT LAVATORY UNNOTICED. FLC AND CABIN CREW DEPARTED ACFT. AFTER RETURNING TO ACFT NEW CABIN CREW INFORMED FLC THAT A THROUGH PAX WAS ALONE ON ACFT FOR ABOUT 15 MINS. EPISODE WAS UNEVENTFUL. CREW MEMBERS SHOULD CHK ACFT FOR PAX PRIOR TO DEPLANING.

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.