Final answer:
A 777 can be dispatched with an inoperative jumpseat if there are enough operational seats for all required crew members. Individual airline policies and aviation laws of the respective country will determine the specific conditions for this.
Step-by-step explanation:
The specific regulations regarding the dispatch of a 777 with an inoperative jumpseat vary based on individual airline policy and aviation laws in the respective country. Generally, however, a plane can still be dispatched with an inoperative jumpseat under conditions where there are enough operational seats available to accommodate all the crew members required for the flight. This is because the primary function of the jumpseat is to provide additional seating for crew members. Therefore, if all necessary crew can be accommodated without the use of the jumpseat - the flight can proceed. For example, in the story of the 767 flight from Montreal to Ottawa, the failure of engines, not seating, was the critical issue. In this manner, the inoperative jumpseat would not have impeded the dispatch of the plane, given the remaining seating was appropriately functional.
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