Hi to Everyone I Would Like to know Your Opinion: Air Traffic Controllers,Pilots, about the next issue.
I Work as an En route Control Center Controller and at the Center in which I Work the new procedures indicate that We Have to put the Aircrafts in trail 10 miles one behind each other and then Clear them for an Arrival which Starts at FL 300 and with an Indicated Airspeed of 280kts. in order to get the Aircraft formed We have to issue a lot of Vectors, Because the Aircrafts are leveled at Cruising Speeds amounting for a workload . These Procedures have Big Mistakes because normally at a FL250 or higher you should Use Mach Speeds as indicated by ICAO how is it possible to publish a procedure at FL300 and 280kts IAS? and secondly, because the difference in Temperature,density of the Air, Wind Speed and Direction You Cannot adjust the Speed of the Aircrafts because they are flying at different Flight Levels ,and You Cannot use the Mach Number Speed Technique because the aircrafts are at different levels only giving You The Option of issuing Vectors like Crazy, imagine to try and put a B747 behind in trail of a Fokker 100. Any Opinions about This ?