Medium Large Transport
Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument
Flight Crew Last 90 Days 250; Flight Crew Type 15000
Troubleshooting; Time Pressure; Distraction; Communication Breakdown; Situational Awareness
ATC Issue All Types; Conflict Ground Conflict; Critical; Deviation / Discrepancy - Procedural Published Material / Policy; Ground Event / Encounter Other / Unknown
Air Traffic Control Provided Assistance; Flight Crew Requested ATC Assistance / Clarification
Human Factors; Airport; Environment - Non Weather Related
Upon arrival; our gate was occupied. Ground Control directed us to hold in the Alpha pad. The depiction on the ORD ramp page states that the entire aircraft should be behind the hold line. The size of the area is entirely too small for that to be accomplished. I pulled the aircraft in and parked as far into the pad at a 90 degree angle facing Taxiway TT. A regional and an Airbus taxied past with plenty of clearance. Ground Control directed an (other carrier) B777 to taxi on TT past us in the holding pad. The (other carrier) aircraft did not have wingtip clearance to taxi past us. With no awareness or concern he allowed his wingtip to pass over our aircraft's cockpit; missing us by a few feet. We notified Ground of the incident and they informed us we were parked incorrectly. That parking pad is not compatible for Aircraft X use. There is no way you can park an Aircraft X in that small area depicted on the diagram. The reference to Jeppesen page is not applicable to holding Pad A.
There is no ability to adequately insure aircraft separation especially with larger aircraft like the B777.
Air carrier flight crew reported after they were directed where to temporarily park on an airport pad; a larger aircraft created a critical ground conflict. The pilots contacted Ground Control regarding the near miss and were told they had parked incorrectly thus causing the ground conflict.