sensors Mode-S transponder
AB3FC4
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N824AN · BOEING 787-9 Dreamliner · operated by AMERICAN AIRLINES INC
- Hex
- AB3FC4
- Octal
- 52637704
- Decimal
- 11,222,980
- Country
- US
- Tail
- N824AN
- Type
- B789
- Flights observed
- 102
- Distinct callsigns
- 19
- Country
- US
- Last broadcast
- 2h ago
Last known position
Country allocation
The ICAO 24-bit address AB3FC4 falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.
Callsign history 19 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| AAL127 | American Airlines | 15 | 2026-05-20 |
| AAL128 | American Airlines | 14 | 2026-05-21 |
| AAL167 | American Airlines | 9 | 2026-05-23 |
| AAL950 | American Airlines | 8 | 2026-05-23 |
| AAL963 | American Airlines | 7 | 2026-05-22 |
| AAL168 | American Airlines | 6 | 2026-05-27 |
| AAL951 | American Airlines | 5 | 2026-05-28 |
| AAL27 | American Airlines | 5 | 2026-05-26 |
| AAL169 | American Airlines | 5 | 2026-05-25 |
| AAL962 | American Airlines | 4 | 2026-05-29 |
| AAL26 | American Airlines | 4 | 2026-05-24 |
| AAL123 | American Airlines | 4 | 2026-05-02 |
| AAL292 | American Airlines | 3 | 2026-05-09 |
| AAL170 | American Airlines | 3 | 2026-05-26 |
| AAL116 | American Airlines | 3 | 2026-05-03 |
| AAL951P | American Airlines | 2 | 2026-04-30 |
| AAL293 | American Airlines | 2 | 2026-05-09 |
| AAL281 | American Airlines | 2 | 2026-05-29 |
| AAL280 | American Airlines | 1 | 2026-05-19 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | AAL281 | DFW → ICN | May 29, 16:15 UTC | May 29, 23:00 UTC | 6h 45m |
| 2026-05-29 | AAL962 | GRU → DFW | May 29, 01:20 UTC | May 29, 11:10 UTC | 9h 50m |
| 2026-05-28 | AAL951 | JFK → GRU | May 28, 01:15 UTC | May 28, 09:50 UTC | 8h 35m |
| 2026-05-27 | AAL168 | PDX → CLT | May 27, 09:25 UTC | May 27, 21:30 UTC | 12h 5m |
| 2026-05-26 | AAL27 | LAX → HND | May 26, 19:25 UTC | May 27, 06:29 UTC | 11h 5m |
| 2026-05-26 | AAL170 | NRT → LAX | May 26, 03:15 UTC | May 26, 12:40 UTC | 9h 25m |
| 2026-05-25 | AAL169 | LAX → NRT | May 25, 08:20 UTC | May 25, 19:30 UTC | 11h 9m |
| 2026-05-24 | AAL26 | HND → LAX | May 24, 11:20 UTC | May 24, 20:30 UTC | 9h 10m |
| 2026-05-23 | AAL167 | JFK → HND | May 23, 14:55 UTC | May 24, 03:40 UTC | 12h 46m |
| 2026-05-23 | AAL950 | GRU → JFK | May 23, 01:40 UTC | May 23, 10:40 UTC | 8h 59m |
| 2026-05-23 | AAL950 | GRU → JFK | May 23, 01:38 UTC | May 23, 10:34 UTC | 8h 56m |
| 2026-05-22 | AAL963 | DFW → GRU | May 22, 02:13 UTC | May 22, 11:38 UTC | 9h 25m |
| 2026-05-22 | AAL963 | DFW → GRU | May 22, 02:15 UTC | May 22, 11:40 UTC | 9h 25m |
| 2026-05-21 | AAL128 | ICN → DFW | May 21, 09:30 UTC | May 21, 21:58 UTC | 12h 28m |
| 2026-05-20 | AAL128 | ICN → DFW | May 20, 23:05 UTC | May 21, 22:10 UTC | 23h 5m |
| 2026-05-20 | AAL128 | ICN → DFW | May 20, 22:10 UTC | May 21, 21:00 UTC | 22h 50m |
| 2026-05-20 | AAL127 | DFW → PVG | May 20, 19:05 UTC | May 21, 19:00 UTC | 23h 55m |
| 2026-05-20 | AAL127 | DFW → PVG | May 20, 17:05 UTC | May 21, 11:55 UTC | 18h 50m |
| 2026-05-20 | AAL127 | DFW → PVG | May 20, 16:22 UTC | May 21, 07:32 UTC | 15h 10m |
| 2026-05-20 | AAL127 | DFW → PVG | May 20, 16:25 UTC | May 21, 11:55 UTC | 19h 30m |
| 2026-05-19 | AAL280 | ICN → DFW | May 19, 09:05 UTC | May 19, 22:00 UTC | 12h 55m |
| 2026-05-18 | AAL281 | DFW → ICN | May 18, 16:10 UTC | May 19, 06:55 UTC | 14h 44m |
| 2026-05-17 | AAL128 | ICN → DFW | May 17, 09:28 UTC | May 17, 22:08 UTC | 12h 40m |
| 2026-05-16 | AAL127 | DFW → PVG | May 16, 15:55 UTC | May 17, 11:01 UTC | 19h 5m |
| 2026-05-13 | AAL128 | ICN → DFW | May 13, 03:55 UTC | May 13, 22:15 UTC | 18h 20m |
| 2026-05-12 | AAL128 | ICN → DFW | May 12, 23:05 UTC | May 13, 22:15 UTC | 23h 10m |
| 2026-05-12 | AAL128 | ICN → DFW | May 12, 21:40 UTC | May 13, 21:00 UTC | 23h 20m |
| 2026-05-12 | AAL127 | DFW → PVG | May 12, 19:05 UTC | May 13, 19:00 UTC | 23h 55m |
| 2026-05-12 | AAL127 | DFW → PVG | May 12, 17:05 UTC | May 13, 11:50 UTC | 18h 45m |
| 2026-05-12 | AAL127 | DFW → PVG | May 12, 16:15 UTC | May 13, 11:50 UTC | 19h 35m |
| 2026-05-12 | AAL962 | GRU → DFW | May 12, 05:45 UTC | May 12, 07:40 UTC | 1h 55m |
| 2026-05-12 | AAL962 | GRU → DFW | May 12, 01:12 UTC | May 12, 11:46 UTC | 10h 34m |
| 2026-05-11 | AAL951 | JFK → GRU | May 11, 01:10 UTC | May 11, 05:30 UTC | 4h 20m |
| 2026-05-11 | AAL951 | JFK → GRU | May 11, 01:06 UTC | May 11, 09:53 UTC | 8h 47m |
| 2026-05-09 | AAL293 | DEL → JFK | May 9, 18:10 UTC | May 10, 09:15 UTC | 15h 5m |
| 2026-05-09 | AAL292 | JFK → DEL | May 9, 01:05 UTC | May 9, 15:00 UTC | 13h 55m |
| 2026-05-09 | AAL292 | JFK → DEL | May 9, 01:03 UTC | May 9, 14:36 UTC | 13h 33m |
| 2026-05-08 | AAL168 | PDX → CLT | May 8, 08:53 UTC | May 8, 20:58 UTC | 12h 5m |
| 2026-05-08 | AAL168 | PDX → CLT | May 8, 08:55 UTC | May 8, 21:00 UTC | 12h 5m |
| 2026-05-07 | AAL167 | JFK → HND | May 7, 14:35 UTC | May 8, 04:04 UTC | 13h 29m |
| 2026-05-07 | AAL167 | JFK → HND | May 7, 14:33 UTC | May 8, 04:02 UTC | 13h 29m |
| 2026-05-07 | AAL950 | GRU → JFK | May 7, 01:50 UTC | May 7, 10:50 UTC | 9h 0m |
| 2026-05-06 | AAL963 | DFW → GRU | May 6, 03:10 UTC | May 6, 12:45 UTC | 9h 35m |
| 2026-05-05 | AAL128 | ICN → DFW | May 5, 09:39 UTC | May 5, 22:19 UTC | 12h 40m |
| 2026-05-04 | AAL128 | ICN → DFW | May 4, 23:05 UTC | May 5, 22:40 UTC | 23h 35m |
| 2026-05-04 | AAL128 | ICN → DFW | May 4, 21:40 UTC | May 5, 21:01 UTC | 23h 20m |
| 2026-05-04 | AAL127 | DFW → PVG | May 4, 19:05 UTC | May 5, 19:00 UTC | 23h 55m |
| 2026-05-04 | AAL127 | DFW → PVG | May 4, 17:10 UTC | May 5, 11:55 UTC | 18h 46m |
| 2026-05-04 | AAL127 | DFW → PVG | May 4, 15:55 UTC | May 5, 11:55 UTC | 20h 1m |
| 2026-05-03 | AAL116 | OGG → DFW | May 3, 08:45 UTC | May 3, 10:30 UTC | 1h 45m |
About Mode-S
A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.
Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.
Prefer a tail-number view? See the N824AN page for operator, model, and routing details .