Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AB79DE

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N839AW · AIRBUS A-319 · operated by AMERICAN AIRLINES INC

Hex
AB79DE
Octal
52674736
Decimal
11,237,854
Country
US
Tail
N839AW
Type
A319
No current signal · last broadcast Jul 26, 21:30 UTC
Flights observed
709
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:30 UTC

Last known position

Most recent position reported by Mode-S AB79DE.

Country allocation

The ICAO 24-bit address AB79DE 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
AAL1556 American Airlines 12 2026-07-21
AAL1348 American Airlines 11 2026-06-08
AAL2227 American Airlines 10 2026-06-08
AAL3198 - 8 2026-07-06
AAL2347 - 8 2026-06-30
AAL1440 - 8 2026-07-16
AAL3325 American Airlines 7 2026-06-06
AAL2625 American Airlines 7 2026-07-16
AAL2486 - 7 2026-07-03
AAL2398 American Airlines 7 2026-07-21
AAL2948 - 6 2026-07-19
AAL1873 American Airlines 6 2026-07-26
AAL531 American Airlines 5 2026-05-04
AAL397 American Airlines 5 2026-06-25
AAL3309 American Airlines 5 2026-04-18
AAL3170 - 5 2026-07-02
AAL3164 American Airlines 5 2026-05-03
AAL2909 - 5 2026-06-23
AAL2489 - 5 2026-07-10
AAL1973 American Airlines 5 2026-04-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL3207 DCA → BOS Jul 26, 21:10 UTCJul 26, 21:30 UTC20m
2026-07-26 AAL1873 ORD → LAS Jul 26, 18:00 UTCJul 26, 20:15 UTC2h 15m
2026-07-26 AAL1873 ORD → LAS Jul 26, 14:50 UTCJul 26, 16:50 UTC2h 0m
2026-07-26 AAL2906 PVD → DCA Jul 26, 12:30 UTCJul 26, 13:30 UTC1h 0m
2026-07-26 AAL1804 CLT → IAH Jul 26, 00:50 UTCJul 26, 01:30 UTC40m
2026-07-26 AAL1804 CLT → IAH Jul 26, 00:47 UTCJul 26, 01:34 UTC47m
2026-07-25 AAL343 CLT → SFO Jul 25, 22:45 UTCJul 25, 23:50 UTC1h 5m
2026-07-25 AAL343 CLT → SFO Jul 25, 22:43 UTCJul 25, 23:49 UTC1h 6m
2026-07-25 AAL337 DFW → SJC Jul 25, 21:00 UTCJul 25, 21:55 UTC55m
2026-07-25 AAL337 DFW → SJC Jul 25, 20:56 UTCJul 25, 21:50 UTC54m
2026-07-25 AAL2448 DFW → EWR Jul 25, 17:50 UTCJul 25, 19:55 UTC2h 5m
2026-07-25 AAL2448 DFW → EWR Jul 25, 14:30 UTCJul 25, 16:55 UTC2h 25m
2026-07-24 AAL949 - Jul 24, 15:50 UTCJul 24, 17:20 UTC1h 30m
2026-07-24 AAL2916 - Jul 24, 13:00 UTCJul 24, 14:50 UTC1h 50m
2026-07-24 AAL1248 EWR → DFW Jul 24, 10:15 UTCJul 24, 11:05 UTC50m
2026-07-24 AAL2083 CLT → SMF Jul 24, 01:00 UTCJul 24, 01:40 UTC40m
2026-07-23 AAL1557 IND → PHL Jul 23, 22:55 UTCJul 24, 00:05 UTC1h 10m
2026-07-23 AAL1557 IND → PHL Jul 23, 20:40 UTCJul 23, 21:40 UTC1h 0m
2026-07-23 AAL1873 ORD → LAS Jul 23, 16:00 UTCJul 23, 18:35 UTC2h 35m
2026-07-23 AAL1873 ORD → LAS Jul 23, 12:45 UTCJul 23, 15:00 UTC2h 15m
2026-07-23 AAL2985 SAN → ORD Jul 23, 10:30 UTCJul 23, 11:10 UTC40m
2026-07-23 AAL2985 SAN → ORD Jul 23, 10:29 UTCJul 23, 11:09 UTC40m
2026-07-23 AAL2167 PVD → ORD Jul 23, 02:50 UTCJul 23, 04:30 UTC1h 40m
2026-07-23 AAL2167 PVD → ORD Jul 23, 02:48 UTCJul 23, 04:24 UTC1h 36m
2026-07-22 AAL3317 DFW → LAX Jul 22, 22:40 UTCJul 23, 00:45 UTC2h 5m
2026-07-22 AAL3317 DFW → LAX Jul 22, 20:00 UTCJul 22, 21:40 UTC1h 40m
2026-07-22 AAL1363 CLT → MSN Jul 22, 17:00 UTCJul 22, 18:40 UTC1h 40m
2026-07-22 AAL1363 CLT → MSN Jul 22, 14:30 UTCJul 22, 15:55 UTC1h 25m
2026-07-22 AAL1926 MSY → CLT Jul 22, 12:00 UTCJul 22, 12:45 UTC45m
2026-07-22 AAL1004 BOS → CLT Jul 22, 04:54 UTCJul 22, 05:34 UTC40m
2026-07-22 AAL1004 BOS → CLT Jul 22, 04:55 UTCJul 22, 05:25 UTC30m
2026-07-22 AAL1913 - Jul 22, 00:35 UTCJul 22, 02:40 UTC2h 5m
2026-07-22 AAL1913 IAH → ORD Jul 22, 00:32 UTCJul 22, 02:39 UTC2h 7m
2026-07-21 AAL1913 - Jul 21, 21:50 UTCJul 21, 23:45 UTC1h 55m
2026-07-21 AAL2398 DCA → BGR Jul 21, 18:10 UTCJul 21, 20:00 UTC1h 50m
2026-07-21 AAL1556 JFK → CLT Jul 21, 15:45 UTCJul 21, 17:10 UTC1h 25m
2026-07-21 AAL1556 JFK → CLT Jul 21, 15:42 UTCJul 21, 17:09 UTC1h 27m
2026-07-21 AAL1556 JFK → CLT Jul 21, 12:55 UTCJul 21, 14:00 UTC1h 5m
2026-07-21 AAL2159 BOS → DCA Jul 21, 10:20 UTCJul 21, 11:30 UTC1h 10m
2026-07-21 AAL1874 PHL → BNH Jul 21, 03:10 UTCJul 21, 04:05 UTC55m
2026-07-21 AAL1874 PHL → BOS Jul 21, 03:09 UTCJul 21, 04:00 UTC51m
2026-07-20 AAL2714 PHL → MIA Jul 20, 22:55 UTCJul 21, 00:45 UTC1h 49m
2026-07-20 AAL2714 PHL → MIA Jul 20, 22:54 UTCJul 21, 00:44 UTC1h 50m
2026-07-20 AAL2714 PHL → MIA Jul 20, 19:40 UTCJul 20, 21:35 UTC1h 55m
2026-07-20 AAL3043 JFK → STT Jul 20, 16:55 UTCJul 20, 17:54 UTC59m
2026-07-20 AAL3043 JFK → STT Jul 20, 17:00 UTCJul 20, 18:00 UTC1h 0m
2026-07-20 AAL1582 DFW → BOS Jul 20, 14:50 UTCJul 20, 15:30 UTC40m
2026-07-20 AAL1582 DFW → BOS Jul 20, 14:49 UTCJul 20, 16:02 UTC1h 13m
2026-07-20 AAL1977 - Jul 20, 12:40 UTCJul 20, 13:30 UTC50m
2026-07-20 AAL365 - Jul 20, 09:15 UTCJul 20, 10:10 UTC55m

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 N839AW page for operator, model, and routing details .

Mode-S AB79DE frequently asked

What is Mode-S code AB79DE?
AB79DE is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N839AW.
Where is Mode-S AB79DE registered?
Mode-S code AB79DE 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 AB79DE broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB79DE, octal 52674736, decimal 11,237,854.
What flights does AB79DE operate?
Mode-S AB79DE has broadcast 20 distinct callsigns, including AAL1556, AAL1348, AAL2227, AAL3198, AAL2347.