Apparatus

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sensors Mode-S transponder

AB8112

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N840NN · BOEING 737-800 · operated by WILMINGTON TRUST CO TRUSTEE

Hex
AB8112
Octal
52700422
Decimal
11,239,698
Country
US
Tail
N840NN
Type
B738
No current signal · last broadcast Jul 26, 22:30 UTC
Flights observed
523
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:30 UTC

Last known position

Most recent position reported by Mode-S AB8112.

Country allocation

The ICAO 24-bit address AB8112 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
AAL2211 - 6 2026-07-14
AAL866 American Airlines 5 2026-07-21
AAL2413 - 5 2026-07-13
AAL2412 - 5 2026-07-11
AAL2194 - 5 2026-06-16
AAL1111 American Airlines 5 2026-04-18
AAL3327 - 4 2026-07-07
AAL3167 - 4 2026-06-29
AAL2941 - 4 2026-04-20
AAL2755 American Airlines 4 2026-05-23
AAL2541 - 4 2026-07-19
AAL2488 - 4 2026-04-13
AAL243 - 4 2026-07-19
AAL2419 American Airlines 4 2026-05-23
AAL1855 American Airlines 4 2026-07-25
AAL1360 - 4 2026-07-17
AAL887 - 3 2026-07-08
AAL808 American Airlines 3 2026-07-26
AAL706 - 3 2026-07-06
AAL387 American Airlines 3 2026-05-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL1563 DFW → LGA Jul 26, 22:00 UTCJul 26, 22:30 UTC30m
2026-07-26 AAL1563 DFW → LGA Jul 26, 18:15 UTCJul 26, 20:05 UTC1h 50m
2026-07-26 AAL1041 PHL → LAX Jul 26, 14:47 UTCJul 26, 16:32 UTC1h 45m
2026-07-26 AAL1041 PHL → LAX Jul 26, 14:50 UTCJul 26, 16:30 UTC1h 40m
2026-07-26 AAL2358 DFW → BOS Jul 26, 10:20 UTCJul 26, 13:10 UTC2h 50m
2026-07-26 AAL808 DFW → PHL Jul 26, 01:20 UTCJul 26, 04:00 UTC2h 40m
2026-07-26 AAL808 DFW → PHL Jul 26, 01:16 UTCJul 26, 04:03 UTC2h 47m
2026-07-25 AAL1855 ORD → LAS Jul 25, 20:40 UTCJul 25, 23:30 UTC2h 50m
2026-07-25 AAL1855 ORD → LAS Jul 25, 16:45 UTCJul 25, 19:20 UTC2h 35m
2026-07-25 AAL3063 SJU → PHL Jul 25, 13:40 UTCJul 25, 15:00 UTC1h 20m
2026-07-25 AAL3063 SJU → PHL Jul 25, 11:15 UTCJul 25, 11:25 UTC10m
2026-07-25 AAL3065 DFW → ORD Jul 25, 03:15 UTCJul 25, 03:40 UTC25m
2026-07-24 AAL3065 DFW → ORD Jul 24, 23:35 UTCJul 25, 01:40 UTC2h 5m
2026-07-24 AAL2439 PHL → MIA Jul 24, 18:47 UTCJul 24, 21:05 UTC2h 18m
2026-07-24 AAL2439 PHL → MIA Jul 24, 18:50 UTCJul 24, 21:10 UTC2h 20m
2026-07-24 AAL2439 PHL → MIA Jul 24, 15:15 UTCJul 24, 17:40 UTC2h 25m
2026-07-24 AAL1240 SDF → CLT Jul 24, 11:10 UTCJul 24, 13:30 UTC2h 20m
2026-07-24 AAL3238 DFW → SLC Jul 24, 00:45 UTCJul 24, 03:05 UTC2h 20m
2026-07-23 AAL2740 DFW → TPA Jul 23, 21:00 UTCJul 23, 22:50 UTC1h 50m
2026-07-23 AAL2747 MKE → PHX Jul 23, 16:25 UTCJul 23, 19:10 UTC2h 45m
2026-07-23 AAL2747 MKE → PHX Jul 23, 16:22 UTCJul 23, 19:05 UTC2h 43m
2026-07-23 AAL2747 MKE → PHX Jul 23, 12:15 UTCJul 23, 14:45 UTC2h 30m
2026-07-23 AAL2472 DTW → PHX Jul 23, 07:10 UTCJul 23, 09:55 UTC2h 45m
2026-07-23 AAL3174 CLT → BWI Jul 23, 04:40 UTCJul 23, 05:45 UTC1h 5m
2026-07-23 AAL2639 ORD → SFO Jul 23, 02:15 UTCJul 23, 03:10 UTC55m
2026-07-23 AAL2639 ORD → SFO Jul 23, 02:13 UTCJul 23, 03:09 UTC56m
2026-07-23 AAL2639 ORD → SFO Jul 23, 00:15 UTCJul 23, 01:05 UTC50m
2026-07-22 AAL1750 CUN → DFW Jul 22, 20:05 UTCJul 22, 22:50 UTC2h 45m
2026-07-22 AAL1750 CUN → DFW Jul 22, 20:04 UTCJul 22, 22:55 UTC2h 51m
2026-07-22 AAL1750 CUN → DFW Jul 22, 16:10 UTCJul 22, 18:50 UTC2h 40m
2026-07-22 AAL1829 - Jul 22, 03:10 UTCJul 22, 04:15 UTC1h 5m
2026-07-22 AAL1829 FAT → PHX Jul 22, 03:00 UTCJul 22, 04:14 UTC1h 14m
2026-07-21 AAL1223 DFW → FAT Jul 21, 22:45 UTCJul 22, 01:30 UTC2h 45m
2026-07-21 AAL1397 BOS → MIA Jul 21, 20:05 UTCJul 21, 20:50 UTC45m
2026-07-21 AAL1397 BOS → MIA Jul 21, 20:01 UTCJul 21, 20:47 UTC46m
2026-07-21 AAL691P - Jul 21, 15:15 UTCJul 21, 17:05 UTC1h 50m
2026-07-21 AAL866 PHX → ORD Jul 21, 06:55 UTCJul 21, 07:40 UTC45m
2026-07-21 AAL866 PHX → ORD Jul 21, 06:42 UTCJul 21, 07:39 UTC57m
2026-07-21 AAL866 PHX → ORD Jul 21, 00:30 UTCJul 21, 04:40 UTC4h 10m
2026-07-20 AAL1833 - Jul 20, 19:55 UTCJul 20, 22:30 UTC2h 35m
2026-07-20 AAL1833 - Jul 20, 15:10 UTCJul 20, 17:35 UTC2h 25m
2026-07-20 AAL3106 IAH → ORD Jul 20, 11:25 UTCJul 20, 13:35 UTC2h 10m
2026-07-19 AAL2541 - Jul 19, 23:55 UTCJul 20, 02:00 UTC2h 5m
2026-07-19 AAL2541 MIA → IAH Jul 19, 23:53 UTCJul 20, 02:02 UTC2h 9m
2026-07-19 AAL1175 DFW → SFO Jul 19, 20:05 UTCJul 19, 21:40 UTC1h 35m
2026-07-19 AAL1917 - Jul 19, 17:05 UTCJul 19, 17:25 UTC20m
2026-07-19 AAL1917 MIA → STI Jul 19, 17:04 UTCJul 19, 18:49 UTC1h 45m
2026-07-19 AAL243 - Jul 19, 14:55 UTCJul 19, 15:25 UTC30m
2026-07-19 AAL243 HAV → MIA Jul 19, 14:42 UTCJul 19, 15:21 UTC39m
2026-07-19 AAL242 - Jul 19, 12:30 UTCJul 19, 13:00 UTC30m

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 N840NN page for operator, model, and routing details .

Mode-S AB8112 frequently asked

What is Mode-S code AB8112?
AB8112 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N840NN.
Where is Mode-S AB8112 registered?
Mode-S code AB8112 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 AB8112 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AB8112, octal 52700422, decimal 11,239,698.
What flights does AB8112 operate?
Mode-S AB8112 has broadcast 20 distinct callsigns, including AAL2211, AAL866, AAL2413, AAL2412, AAL2194.