ADS-B Out vs ADS-B In Explained
The broadcast your plane sends versus the traffic picture it can receive.
ADS-B Out vs ADS-B In Explained
The broadcast your plane sends versus the traffic picture it can receive.
Plain-English definition
ADS-B Out broadcasts your aircraft's GPS position and identity so ATC and trackers can see you. ADS-B In receives traffic/weather broadcasts onto the flight deck (or an EFB). Consumer flight trackers mostly observe Out.
Why travelers should care
When your map updates smoothly, you are usually seeing ADS-B-derived position (sometimes blended with other feeds). Gaps can mean coverage holes, not that the plane vanished.
How it appears in a flight tracker
- Status or ETA can change before SMS arrives
- The map may look normal while the clock slips (holds, metering, gate returns)
- Aircraft swaps and new departure times often precede a clear PA explanation
What to do when it hits your trip
- Pin the flight in FlightyFlow
- Read the newest ETA + delay prediction
- If connecting, decide early whether to rebook
- Keep the airline app ready for official reaccommodation
- Save timestamps if you may file a delay claim or card benefit
Related explainers
Educational note: general aviation literacy for travelers — not operational advice for flight crews.
Frequently asked
ADS-B Out vs ADS-B In?+
The broadcast your plane sends versus the traffic picture it can receive.
Will my flight tracker explain this in-app?+
Good trackers surface the symptom (new ETA, hold, gate return). Pair that with guides like this for the why.
Does this mean my flight will be cancelled?+
Not necessarily. Many of these conditions cause delays or reroutes rather than cancellations. Watch live status.
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