No flightpath produced outside LA Basin


#1

Trying to recover data from this flight: https://flightaware.com/live/flight/N152BS/history/20171001/2215Z

Flight following was requested… and I don’t know if it makes a difference that the aircraft is equipped with only a mode-c transponder. We were able to produce flightaware tracking maps from the previous leg with flight following.


#2

I will put in a ticket to see if we can made the positions visible. Im not sure what caused us to not assume a destination for the flight.


#3

Thanks for looking into this. This aircraft is equipped with a Mode-C transponder. Could that cause the problem? I imagine if flightaware needs to cross check with ADS-B or MLAT it could cause a problem in the recording. Curious to know how this works.


#4

Doesn’t appear to be any MLAT positions. Looks like it was all radar from the FAA. Im assuming you picked up flight following.


#5

Note that a Mode C transponder won’t generate mlat positions - we need Mode S for that.


#6

Yes we picked up flight following.


#7

Unfortunately we will not be able to have the track appear on the site, but the issue is being tracked to hopefully prevent a situation similar to this. Thank you for bringing the issue to our attention.


#8

Thanks for your response. Out of curiosity, what caused the problem?


#9

There could have been a few things that caused it. My UsWAG is we dont have a destination (or assumed destination) for the flight, so with that missing, it likely would not show on the map.


#10

The destination is provided by ATC if we are using a Mode C transponder?


#11

For flight following, we usually do not receive an origin or destination from ATC anymore. We do not receive any data from your mode c transponder.


#12

Ok-- how are the data collected from N152BS? There are a few flight paths
produced from other flights.


#13

Once we begin to receive positions from the FAA, we infer an origin if the positions are close enough to a nearby airport. If they are not, we simply state the flight departed, “Near (City name)”


#14

That’s interesting. Does FlightAware use the feed from FAA ASDI?


#15

That is one source of data that we use.