Sorry about the confusion. The schedule I was looking at is:
April 1: JFK-LHR, 182 is the only flight shows operated by 777 jet.
April 8: LHR-JFK, 179 is the only flight shows operated by 777 jet.
Would that be a rotation of 772 and 773 for those flights, or we will see more 773 operating those two flights?
Everything else on those two days shows 747 jet.