Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AB1203

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N812NN · BOEING 737-800 · operated by WILMINGTON TRUST CO TRUSTEE

Hex
AB1203
Octal
52611003
Decimal
11,211,267
Country
US
Tail
N812NN
Type
B738
Broadcasting now · callsign AAL551 · 37,000 ft
Flights observed
519
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:45 UTC

Current position

AB1203 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AB1203 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
AAL2768 - 9 2026-07-09
AAL1998 - 8 2026-07-17
AAL2544 American Airlines 7 2026-05-09
AAL2413 - 6 2026-07-17
AAL1492 - 6 2026-07-04
AAL999 - 5 2026-07-18
AAL2582 American Airlines 5 2026-07-26
AAL1529 - 5 2026-07-03
AAL831 American Airlines 4 2026-07-01
AAL526 American Airlines 4 2026-06-10
AAL3300 American Airlines 4 2026-07-25
AAL3169 - 4 2026-06-14
AAL2899 - 4 2026-06-19
AAL2309 - 4 2026-06-15
AAL2128 American Airlines 4 2026-04-14
AAL1975 American Airlines 4 2026-06-12
AAL1915 American Airlines 4 2026-06-08
AAL1697 - 4 2026-06-24
AAL1614 American Airlines 4 2026-06-05
AAL1076 - 4 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL1634 AUS → PHL Jul 26, 20:55 UTCJul 26, 22:45 UTC1h 50m
2026-07-26 AAL2582 IND → CLT Jul 26, 17:50 UTCJul 26, 18:25 UTC35m
2026-07-26 AAL2582 IND → CLT Jul 26, 16:05 UTCJul 26, 16:20 UTC15m
2026-07-26 AAL2582 IND → CLT Jul 26, 16:02 UTCJul 26, 18:22 UTC2h 20m
2026-07-26 AAL2582 IND → CLT Jul 26, 14:35 UTCJul 26, 14:45 UTC10m
2026-07-26 AAL2582 IND → CLT Jul 26, 12:30 UTCJul 26, 12:55 UTC25m
2026-07-26 AAL1165 BOS → PHL Jul 26, 09:30 UTCJul 26, 11:00 UTC1h 30m
2026-07-26 AAL1212 PHL → PHX Jul 26, 02:50 UTCJul 26, 04:25 UTC1h 35m
2026-07-25 AAL3300 DFW → LIT Jul 25, 22:45 UTCJul 26, 01:05 UTC2h 20m
2026-07-25 AAL3300 DFW → LIT Jul 25, 21:10 UTCJul 25, 21:35 UTC25m
2026-07-25 AAL3300 DFW → LIT Jul 25, 19:20 UTCJul 25, 19:40 UTC20m
2026-07-25 AAL3300 DFW → LIT Jul 25, 19:18 UTCJul 25, 21:34 UTC2h 16m
2026-07-25 AAL924 MDE → MIA Jul 25, 14:35 UTCJul 25, 17:30 UTC2h 55m
2026-07-25 AAL923 MIA → MDE Jul 25, 03:10 UTCJul 25, 06:00 UTC2h 50m
2026-07-25 AAL2963 DFW → SDF Jul 25, 00:50 UTCJul 25, 01:20 UTC30m
2026-07-24 AAL2963 DFW → SDF Jul 24, 23:43 UTCJul 25, 01:19 UTC1h 36m
2026-07-24 AAL2890 PHL → CMH Jul 24, 18:00 UTCJul 24, 20:20 UTC2h 20m
2026-07-24 AAL2890 PHL → CMH Jul 24, 17:56 UTCJul 24, 21:16 UTC3h 20m
2026-07-24 AAL2190 ORD → FLL Jul 24, 04:20 UTCJul 24, 16:25 UTC12h 5m
2026-07-24 AAL1728 DTW → PHX Jul 24, 00:55 UTCJul 24, 02:45 UTC1h 50m
2026-07-23 AAL1728 DTW → PHX Jul 23, 21:40 UTCJul 23, 23:30 UTC1h 50m
2026-07-23 AAL937 BOS → LGA Jul 23, 15:35 UTCJul 23, 15:40 UTC5m
2026-07-23 AAL1379 PVD → PHL Jul 23, 03:20 UTCJul 23, 04:55 UTC1h 35m
2026-07-23 AAL1379 PVD → PHL Jul 23, 00:30 UTCJul 23, 02:10 UTC1h 40m
2026-07-22 AAL394 MSN → CLT Jul 22, 19:45 UTCJul 22, 21:50 UTC2h 5m
2026-07-22 AAL393 DFW → MEX Jul 22, 16:15 UTCJul 22, 18:25 UTC2h 10m
2026-07-22 AAL393 DFW → MEX Jul 22, 16:10 UTCJul 22, 18:20 UTC2h 10m
2026-07-22 AAL1217 CLT → MSN Jul 22, 12:00 UTCJul 22, 14:20 UTC2h 20m
2026-07-22 AAL1217 CLT → MSN Jul 22, 11:56 UTCJul 22, 14:18 UTC2h 22m
2026-07-21 AAL2371 ORD → LGA Jul 21, 18:15 UTCJul 21, 20:30 UTC2h 15m
2026-07-21 AAL1374 LGA → DTW Jul 21, 13:45 UTCJul 21, 15:50 UTC2h 5m
2026-07-20 AAL2233 DFW → MEX Jul 20, 23:16 UTCJul 21, 01:18 UTC2h 2m
2026-07-20 AAL2233 DFW → MEX Jul 20, 23:20 UTCJul 21, 01:20 UTC1h 59m
2026-07-20 AAL1911 CLT → PHX Jul 20, 18:25 UTCJul 20, 21:20 UTC2h 55m
2026-07-20 AAL1911 CLT → PHX Jul 20, 14:25 UTCJul 20, 17:00 UTC2h 35m
2026-07-20 AAL3291 - Jul 20, 10:55 UTCJul 20, 13:00 UTC2h 5m
2026-07-20 AAL1316 DFW → JFK Jul 20, 04:30 UTCJul 20, 06:40 UTC2h 10m
2026-07-19 AAL2144 BOS → DCA Jul 19, 19:20 UTCJul 20, 02:30 UTC7h 10m
2026-07-19 AAL602 - Jul 19, 16:35 UTCJul 19, 17:40 UTC1h 5m
2026-07-19 AAL602 - Jul 19, 14:10 UTCJul 19, 15:20 UTC1h 10m
2026-07-19 AAL2787 - Jul 19, 11:05 UTCJul 19, 12:30 UTC1h 25m
2026-07-18 AAL1076 - Jul 18, 23:50 UTCJul 19, 01:15 UTC1h 25m
2026-07-18 AAL2211 - Jul 18, 20:45 UTCJul 18, 22:20 UTC1h 35m
2026-07-18 AAL2211 - Jul 18, 18:00 UTCJul 18, 19:25 UTC1h 25m
2026-07-18 AAL999 - Jul 18, 15:00 UTCJul 18, 16:25 UTC1h 25m
2026-07-18 AAL2564 DFW → ABQ Jul 18, 04:55 UTCJul 18, 06:10 UTC1h 15m
2026-07-18 AAL1945 - Jul 18, 00:55 UTCJul 18, 02:40 UTC1h 45m
2026-07-17 AAL1945 DFW → IND Jul 17, 22:05 UTCJul 17, 23:50 UTC1h 45m
2026-07-17 AAL1998 - Jul 17, 18:40 UTCJul 17, 20:44 UTC2h 5m
2026-07-17 AAL1998 - Jul 17, 15:29 UTCJul 17, 17:25 UTC1h 55m

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 N812NN page for operator, model, and routing details .

Mode-S AB1203 frequently asked

What is Mode-S code AB1203?
AB1203 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N812NN.
Where is Mode-S AB1203 registered?
Mode-S code AB1203 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 AB1203 broadcasting right now?
Yes. Mode-S AB1203 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB1203, octal 52611003, decimal 11,211,267.
What flights does AB1203 operate?
Mode-S AB1203 has broadcast 20 distinct callsigns, including AAL2768, AAL1998, AAL2544, AAL2413, AAL1492.