B787 flight crew reported a near collision with a B777 on a taxiway.

Attributes
ACN	1731197
Time
Date	202002
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	B787-900
Operating Under FAR Part	Part 121
Flight Phase	Taxi
Flight Plan	IFR
Aircraft 2
Make Model Name	B777 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Taxi
Flight Plan	IFR
Person 1
Function	Relief Pilot First Officer
Qualification	Flight Crew Air Transport Pilot (ATP)
Person 2
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	ATC Issue All Types Conflict Ground Conflict Critical

Narrative:

Cleared to push at ZZZ. ATC taxi instructions were to follow narrow body and proceed for [runway] xxr. In the right turn we observed a B777 taxiing eastbound on B. We immediately stopped taxi; however aircraft Y did not and they continued to taxi on a collision course with our aircraft. We yelled on ground (ground) freq for aircraft Y to stop and they complied. Subsequently; and unbelievably; ground instructed them to continue taxiing to which a clear collision would occur. They began to taxi forward and we again had to yell on ground freq for them to stop. We were then in very close proximity with neither aircraft could move. We called ground and operations. A tug was sent out to push us back onto C. Proceeded without further incident. Ground controller acknowledged his mistake several times while taxiing out.

Original NASA ASRS Text

Title: B787 flight crew reported a near collision with a B777 on a taxiway.

Narrative: Cleared to push at ZZZ. ATC taxi instructions were to follow narrow body and proceed for [Runway] XXR. In the right turn we observed a B777 taxiing eastbound on B. We immediately stopped taxi; however Aircraft Y did not and they continued to taxi on a collision course with our aircraft. We yelled on GND (Ground) freq for Aircraft Y to stop and they complied. Subsequently; and unbelievably; GND instructed them to continue taxiing to which a clear collision would occur. They began to taxi forward and we again had to yell on GND freq for them to stop. We were then in very close proximity with neither aircraft could move. We called GND and OPS. A tug was sent out to push us back onto C. Proceeded without further incident. Ground Controller acknowledged his mistake several times while taxiing out.

Data retrieved from NASA's ASRS site 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.