6.
MEL requirements

7.
ATC Filing - Formats and Times

8.
ETOPS - Routes and en route alternates

9.
Restricted airspace areas, Special use areas

10.
 Aircraft Performance requirements

That same carrier also listed the following as situations that change the importance of flight planning goals:
1.
Airline dependability performance (scheduled block times)

2.
Payload capability

3.
Airport status / curfews

4.
Passenger connections

5.
Aircraft status (MEL)

6.
Crew legality

Package Carrier
One major package carrier was sampled as part of this program. The carrier has requested to remain anonymous.
World View (Goals/Constraints) Safety, carrying all the volume as efficiently as possible. The primary business objective for the package carrier is to fly as much cargo as fast as possible to the next station in order to satisfy delivery schedules, whether connecting cargo, sorting cargo at the main distribution center, or flying the cargo to regional distribution centers for delivery. Extra volume may cause the plan to be filed for a slow airspeed because the extra weight reduces the amount of fuel that can be carried. Also, some airports are landing weight-restricted. Their schedule is driven by the sorting requirements; inbound flights from the west coast are most critical. They protect some flights more than others because of the priority of the volume, where it’s going, or how much time they have.
Constraints: Many of the package carrier constraints are shared with other operator classes (e.g., Airport conditions, clutter on the runway, snow, ice, en route weather, alternates weather, drift down requirements, type of aircraft, airport altitude, temperature, pressure, MELs and CDLs, crew time, crew qualifications, traffic densities). Unique constraints include problems with the sort: For example, having a conveyor belt break, can cause problems across the board. Sometimes, the biggest problems can happen during good weather conditions because everyone departs on time and arrives at once and everyone has minimum fuel on board because no one expects to hold; if a problem develops, such as a flat tire on the runway, people don’t have enough fuel to hold and everyone has to divert. One such incident can counteract many flights’ worth of fuel saving practices, so this company carries a little extra fuel for unexpected events. One decision dispatchers have to make is, when an aircraft is holding and the holding time is unknown, should they divert and put on more fuel so they can get in when conditions clear at the expense of losing their place in line if conditions clear sooner. Also, ground support at an airport can affect diversion decisions: do they have the necessary loading equipment, fueling, electrical, air, etc., and do they meet the aircraft’s airport performance and Navaid requirements?
　
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