Right you are Alan, I missed that. And it turns out they meant it. What really doesn’t make sense is their interpretation and implementation.
They say this about anonymous mode: “If the option is available, it can be enabled during the installation. When the aircraft is on the ground and during the first few minutes of flight (so ATC can establish a track)”
If it’s really so ATC can establish a track then prohibiting anonymous mode for 90 seconds after power up probably won’t accomplish that. I’m never airborne 90 seconds after engine start and I don’t reliably see towers while on the ground. If they really wanted to ensure ATC could establish a track (they being the govt requirements writers) they would have prohibited anonymous mode while on the ground and for 90 seconds after the ground/air bit gets flipped to “air”. Most any aircraft will be at 500ft or so after 90 seconds so would be seeing a tower.
They say this about anonymous mode: “If the option is available, it can be enabled during the installation. When the aircraft is on the ground and during the first few minutes of flight (so ATC can establish a track)”
If it’s really so ATC can establish a track then prohibiting anonymous mode for 90 seconds after power up probably won’t accomplish that. I’m never airborne 90 seconds after engine start and I don’t reliably see towers while on the ground. If they really wanted to ensure ATC could establish a track (they being the govt requirements writers) they would have prohibited anonymous mode while on the ground and for 90 seconds after the ground/air bit gets flipped to “air”. Most any aircraft will be at 500ft or so after 90 seconds so would be seeing a tower.
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