October 6, 20214 yr 34 minutes ago, jcomm said: Above 18000' we all get 29.92 because they use the USA default transition altitude allover the World... Would be great, since they have access to all of that data through Navigraph, if they could use the published transition altitudes depending on where you're flying, same regarding transition levels, unless stated as "assigned by ATC" which might in that case become generated based on MSA + local transition altitude. Not that complex to implement I believe ... What I never could understand is why the Transition levels in Europe for instance change between one country and another. Sounds like lots of room for confusion.
October 6, 20214 yr I may be wrong but I don't believe they do. They transition at FL180 like the rest of the world. However, what is different is that some countries will use flight level assignations for lower altitudes (FL080 for 8,000, FL100 for 10,000, etc.), but you still wouldn't change the BP to standard until FL180. Randall Rocke
October 6, 20214 yr 13 minutes ago, RandallR said: I may be wrong but I don't believe they do. They transition at FL180 like the rest of the world. However, what is different is that some countries will use flight level assignations for lower altitudes (FL080 for 8,000, FL100 for 10,000, etc.), but you still wouldn't change the BP to standard until FL180. In Europe, if the transition altitude is (for example) 6000 feet, that is indeed the altitude where the altimeter is set to STD. Jim BarrettLicensed Airframe & Powerplant Mechanic, Avionics, Electrical & Air Data Systems Specialist. Qualified on: Falcon 900, CRJ-200, Dornier 328-100, Hawker 850XP and 1000, Lear 35, 45, 55 and 60, Gulfstream IV and 550, Embraer 135, Beech Premiere and 400A, MD-80.
October 6, 20214 yr 16 minutes ago, RandallR said: I may be wrong but I don't believe they do. They transition at FL180 like the rest of the world. However, what is different is that some countries will use flight level assignations for lower altitudes (FL080 for 8,000, FL100 for 10,000, etc.), but you still wouldn't change the BP to standard until FL180. Negative, here in Portugal, where I fly, for instance in Lisbon TMA transition altitude is 4000', so we do set our altimeters to 1013.2 ( 29.92 ) passing that altitude... Transition Levels are assigned by ATC, but in Lisbon is usually 5000' Transition Levels are always limited by MSA though. Edited October 6, 20214 yr by jcomm Flying gliders since 1980 Flightsimming since 1992 AMD Ryzen 5600x, 32GB RAM, GPU Nvidia RTX 3060 Ti 8 GB, 1 TB and 500 GB nvme2 SSD drives, HP 27" 60Hz LED monitor @ 1920x1080, T16000, Hotas from old X52 Pro, Saitek Combat Rudder Pro (2010 model)
October 6, 20214 yr Thanks for the info - I was not aware of varying transition levels. I've been aware of the different use of flight level nomenclature in Europe for some time, so I thought that was confusing some users. I must say that I much prefer the US system of using a unified altitude system. It seems that it is adding unnecessary complexity and work-load to an already complex endeavor (not having to reset altimeters constantly removes workload, but having to include new transition levels in flight-planning for different regions, especially if they are fairly close together would raise the workload). Edited October 6, 20214 yr by RandallR Randall Rocke
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