14

Green Dot (GD) speed is a term used by Airbus. It is named after the symbol on the speed tape. It refers to the speed that results in the best climb gradient in case of an engine failure, but it is close the speed resulting in best L/D ratio with all engines operating. Airbus defines it as follows: Definition GD speed is the engine-out operating ...


7

In some cases airlines will follow the "what goes around comes around" principle and will loan or sell parts, and consumables like tires, to another operator that is "AOG" (Aircraft On Ground) to the extent they can without jeopardizing their own operation. What that means is, in an airline's spares inventory it will have a baseline minimum inventory ...


6

Short answer: Yes. You need to distinguish between short-haul and long-haul fleets. For example, when it is 4 a.m. in Central Europe, almost all the aircraft which fly short-haul routes throughout Europe during the day will be on the ground somewhere in Europe simultaneously and there must, therefore, be ample parking for all those aircraft (though not ...


3

The simple answer is that no one has shut down any airspaces yet and that is what stops planes from moving. While many governments have put travel bans in place for people airplanes often carry other things like mail and cargo and it may still be viable and profitable to fly them. There is also the compounded fact that many people are trying to get home to ...


2

I know that in the Netherlands this procedure is open and not obscured behind a login portal. In the Netherlands the commercial airports are operated by the Schiphol Group, the number of flight movements or slots per airport is determined in collaboration with the government. For Schiphol this is now 500,000 per year. The allocation of the slots is governed ...


1

Possibly not at the origin or destination, especially if the grounding is sudden and unbalanced as happened after 9/11. Hub airports may not have enough pavement to hold all outbound and inbound planes; it's assumed only half will be there on average. However, with a modicum of planning or if ferry flights are allowed, both of which should be true in the ...


1

Under FAR Part 117, only certified "air carriers" are allowed to sell "aviation services" to the general public. Certification means that the FAA has determined the proposed operations, whatever they may be, will be reasonably safe. FAR Part 121 covers most scheduled air carriers, which are commonly called "airlines". These are the only air carriers that ...


Only top voted, non community-wiki answers of a minimum length are eligible