NTSB Identification: BFO85IA074.
The docket is stored on NTSB microfiche number 31924.
Scheduled 14 CFR operation of UNITED AIRLINES
Incident occurred Sunday, September 08, 1985 in WASHINGTON, DC
Probable Cause Approval Date: 08/30/1994
Aircraft: MCDONNELL DOUGLAS DC-10-10, registration: N1842U
Injuries: 1 Minor,175 Uninjured.

NTSB investigators used data provided by various sources and may not have traveled in support of this investigation to prepare this aircraft incident report.

NORTHWEST FLIGHT 78 (NW78), A B-757, WAS PARKED AT GATE 17 FACING EAST WITH MOBILE PASSENGER LOUNGE (MPL) DOCKED AT L1 DOOR. UNITED 52, A DC-10, TAXIED IN EASTERLY DIRECTION BY LEFT SIDE OF NW78, THEN TURNED RIGHT TO SOUTHEASTERLY HEADING TO FOLLOW LEAD-IN LINE TO GATE 15. DC-10 WAS ON LEAD-IN HEADING WITH NOSEWHEEL ABOUT 3' TO 6' RIGHT OF LINE & FOLLOWING SIGNALS FROM GUIDEMAN, WHEN RIGHT WINGTIP STRUCK AFT END OF MPL. DRIVER OF MPL WAS STANDING ON GANGWAY & FELL BACKWARD INTO 757 & RECEIVED MINOR INJURY. BOTH PLANES RECEIVED MINOR DAMAGE; MPL WAS SUBSTANTIALLY DAMAGED. UNITED HAD RECENTLY BEGUN TO USE GATE 15 FOR DC-10'S. AT THAT TIME, NW WAS USING DC-10 ON FLT 78, WHICH DEPLANED THRU L2 DOOR, BUT A WEEK BEFORE INCIDENT, DC-10 WAS REPLACED WITH 757 THAT NORMALLY DEPLANED THRU L1 DOOR. NW78'S ARRIVAL WAS LATE THAT DAY, SO DEPLANING WAS STILL IN PROGRESS WHEN FLIGHT 52 ARRIVED. MEASUREMENTS CONFIRMED INSUFFICIENT CLEARANCE EXISTED FOR DC-10 AT GATE 15, WHEN MPL WAS DOCKED WITH 757 AT GATE 17.

The National Transportation Safety Board determines the probable cause(s) of this incident to be:

CREW/GROUP COORDINATION..INADEQUATE..GROUND PERSONNEL

The National Transportation Safety Board determines the probable cause(s) of this incident to be:

CLEARANCE..NOT MAINTAINED



Contributing Factors

PROCEDURE INADEQUATE..COMPANY/OPERATOR MANAGEMENT

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