Apparatus

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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
Broadcasting now · callsign AAL950 · 36,000 ft
Flights observed
226
Distinct callsigns
20
Country
US
Last broadcast
2h ago

Current position

AB3FC4 is currently broadcasting. Map zoomed to live 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 20 distinct

Callsign Airline Flights Last seen
AAL127 American Airlines 19 2026-05-31
AAL128 American Airlines 18 2026-06-01
AAL950 - 12 2026-07-14
AAL167 - 12 2026-06-16
AAL258 - 11 2026-07-09
AAL719 - 9 2026-07-02
AAL279 - 9 2026-07-11
AAL168 American Airlines 9 2026-06-18
AAL963 American Airlines 8 2026-06-02
AAL278 - 8 2026-07-11
AAL259 American Airlines 8 2026-07-09
AAL951 - 7 2026-07-13
AAL718 - 7 2026-07-12
AAL293 - 7 2026-06-19
AAL27 - 7 2026-06-17
AAL111 - 7 2026-07-01
AAL292 - 6 2026-06-19
AAL110 - 6 2026-07-01
AAL236 - 5 2026-06-28
AAL169 American Airlines 5 2026-05-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AAL950 - Jul 14, 01:55 UTCJul 14, 03:40 UTC1h 45m
2026-07-13 AAL951 - Jul 13, 01:20 UTCJul 13, 09:55 UTC8h 35m
2026-07-12 AAL235 - Jul 12, 10:20 UTCJul 12, 18:20 UTC8h 0m
2026-07-12 AAL718 PHL → FCO Jul 12, 00:25 UTCJul 12, 08:00 UTC7h 35m
2026-07-12 AAL718 - Jul 12, 00:25 UTCJul 12, 08:01 UTC7h 35m
2026-07-11 AAL279 - Jul 11, 10:45 UTCJul 11, 17:35 UTC6h 50m
2026-07-11 AAL279 EDI → PHL Jul 11, 10:42 UTCJul 11, 17:34 UTC6h 52m
2026-07-11 AAL278 - Jul 11, 01:05 UTCJul 11, 07:10 UTC6h 5m
2026-07-11 AAL278 PHL → PHL Jul 11, 00:30 UTCJul 11, 00:35 UTC5m
2026-07-10 AAL797 - Jul 10, 20:00 UTCJul 10, 22:25 UTC2h 25m
2026-07-10 AAL796 - Jul 10, 14:20 UTCJul 10, 16:30 UTC2h 10m
2026-07-10 AAL796 - Jul 10, 14:10 UTCJul 10, 14:15 UTC5m
2026-07-10 AAL796 PHL → MIA Jul 10, 14:20 UTCJul 10, 16:30 UTC2h 10m
2026-07-09 AAL259 LIS → PHL Jul 9, 14:20 UTCJul 9, 21:20 UTC7h 0m
2026-07-09 AAL258 PHL → LIS Jul 9, 01:25 UTCJul 9, 07:46 UTC6h 21m
2026-07-09 AAL258 PHL → LIS Jul 9, 01:25 UTCJul 9, 07:40 UTC6h 15m
2026-07-08 AAL797 - Jul 8, 19:40 UTCJul 8, 22:00 UTC2h 20m
2026-07-08 AAL797 MIA → PHL Jul 8, 19:39 UTCJul 8, 21:56 UTC2h 17m
2026-07-08 AAL796 - Jul 8, 15:10 UTCJul 8, 17:25 UTC2h 15m
2026-07-07 AAL279 DFW → SMF Jul 7, 10:35 UTCJul 7, 11:00 UTC25m
2026-07-07 AAL279 DFW → SMF Jul 7, 10:35 UTCJul 7, 17:30 UTC6h 55m
2026-07-07 AAL279 DFW → SMF Jul 7, 10:35 UTCJul 7, 17:18 UTC6h 43m
2026-07-07 AAL278 PHL → EDI Jul 7, 00:00 UTCJul 7, 05:50 UTC5h 50m
2026-07-06 AAL279 DFW → SMF Jul 6, 17:20 UTCJul 6, 17:45 UTC25m
2026-07-06 AAL279 DFW → SMF Jul 6, 10:40 UTCJul 6, 17:15 UTC6h 35m
2026-07-06 AAL278 PHL → EDI Jul 6, 00:35 UTCJul 6, 06:15 UTC5h 40m
2026-07-05 AAL259 LIS → PHL Jul 5, 12:55 UTCJul 5, 13:00 UTC5m
2026-07-05 AAL259 LIS → PHL Jul 5, 12:55 UTCJul 5, 20:08 UTC7h 13m
2026-07-05 AAL258 PHL → LIS Jul 5, 03:50 UTCJul 5, 10:25 UTC6h 35m
2026-07-05 AAL258 PHL → LIS Jul 5, 03:48 UTCJul 5, 10:26 UTC6h 38m
2026-07-04 AAL279 DFW → SMF Jul 4, 10:45 UTCJul 4, 17:35 UTC6h 50m
2026-07-04 AAL278 - Jul 4, 00:10 UTCJul 4, 01:55 UTC1h 45m
2026-07-04 AAL278 PHL → EDI Jul 4, 00:06 UTCJul 4, 06:10 UTC6h 4m
2026-07-03 AAL278 PHL → PHL Jul 3, 23:55 UTCJul 4, 00:00 UTC5m
2026-07-03 AAL755 - Jul 3, 12:30 UTCJul 3, 20:10 UTC7h 40m
2026-07-03 AAL755 CDG → PHL Jul 3, 12:27 UTCJul 3, 20:00 UTC7h 33m
2026-07-03 AAL754 - Jul 3, 02:35 UTCJul 3, 09:20 UTC6h 45m
2026-07-02 AAL719 - Jul 2, 11:20 UTCJul 2, 20:25 UTC9h 5m
2026-07-02 AAL719 FCO → PHL Jul 2, 11:18 UTCJul 2, 20:20 UTC9h 2m
2026-07-01 AAL110 - Jul 1, 23:35 UTCJul 2, 07:50 UTC8h 15m
2026-07-01 AAL111 - Jul 1, 08:55 UTCJul 1, 18:55 UTC10h 0m
2026-07-01 AAL111 FCO → ORD Jul 1, 08:52 UTCJul 1, 18:51 UTC9h 59m
2026-06-30 AAL718 - Jun 30, 21:05 UTCJul 1, 04:45 UTC7h 40m
2026-06-30 AAL259 LIS → PHL Jun 30, 11:05 UTCJun 30, 17:50 UTC6h 45m
2026-06-30 AAL258 - Jun 30, 02:45 UTCJun 30, 08:55 UTC6h 10m
2026-06-30 AAL258 PHL → LIS Jun 30, 02:44 UTCJun 30, 09:04 UTC6h 20m
2026-06-29 AAL259 LIS → PHL Jun 29, 10:24 UTCJun 29, 17:24 UTC7h 0m
2026-06-29 AAL258 - Jun 29, 01:34 UTCJun 29, 07:44 UTC6h 10m
2026-06-29 AAL258 PHL → LIS Jun 29, 01:30 UTCJun 29, 07:50 UTC6h 20m
2026-06-28 AAL719 - Jun 28, 10:39 UTCJun 28, 19:14 UTC8h 35m

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 .

Mode-S AB3FC4 frequently asked

What is Mode-S code AB3FC4?
AB3FC4 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N824AN.
Where is Mode-S AB3FC4 registered?
Mode-S code AB3FC4 is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is AB3FC4 broadcasting right now?
Yes. Mode-S AB3FC4 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB3FC4, octal 52637704, decimal 11,222,980.
What flights does AB3FC4 operate?
Mode-S AB3FC4 has broadcast 20 distinct callsigns, including AAL127, AAL128, AAL950, AAL167, AAL258.