NTSB Identification: CHI83IA269A.
The docket is stored on NTSB microfiche number 24178.
Scheduled 14 CFR UNITED AIRLINES
Incident occurred Monday, June 20, 1983 in CHICAGO, IL
Aircraft: BOEING B-747, registration: N4717U
Injuries: 440 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.
THE UNITED AIRLINES B747 WAS STANDING IN THE RUN UP AREA ADJACENT TO THE RUNWAY. A FLYING TIGERS B747 WAS PASSING TO HIS LEFT. THE CREW OF THE PARKED B747 OPENED THEIR OVERHEAD ESCAPE HATCH AND INDICATED TO THE TAXIING B747 WITH A THUMBS UP SIGN THAT THERE WAS ADEQUATE CLEARANCE. THE TAXIING B747 THEN PROCEEDED FORWARD AND HIT THE NOSE AREA OF THE PARKED B747 WITH THEIR RIGHT WING TIP. BOTH ACFT THEN TAXIED BACK TO THE RAMP WITHOUT FURTHER INCIDENT.
The National Transportation Safety Board determines the probable cause(s) of this incident to be:CLEARANCE..MISJUDGED..FLIGHT ENGINEER
OBJECT..AIRCRAFT MOVING ON GROUND
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