Having arrived at Istambul Ataturk airport from Casablanca, it struck the 777-300ER while taxiing at around 18:10 on 9 August.
The Turkish airports authority says no-one was injured during the event.
Damage was sustained to the 787’s starboard wing as well as the aft structure and auxiliary power unit of the 777, which was parked and preparing for a service to New York JFK.
Flight Fleets Analyzer lists the 777 (TC-JJZ) as having been manufactured in 2015. It also indicates that both aircraft are owned by their respective operators.