Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

ADB0B4

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N981UY · AIRBUS A-321 · operated by AMERICAN AIRLINES INC

Hex
ADB0B4
Octal
53330264
Decimal
11,382,964
Country
US
Tail
N981UY
Type
A321
Broadcasting now · callsign AAL3114 · 29,975 ft
Flights observed
521
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:25 UTC

Current position

ADB0B4 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address ADB0B4 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
AAL2584 - 8 2026-07-14
AAL2238 - 7 2026-07-11
AAL466 American Airlines 6 2026-07-03
AAL2635 American Airlines 5 2026-05-07
AAL2456 American Airlines 5 2026-07-03
AAL3162 American Airlines 4 2026-07-23
AAL3156 - 4 2026-06-26
AAL2830 - 4 2026-06-30
AAL2722 American Airlines 4 2026-05-18
AAL2687 American Airlines 4 2026-05-19
AAL2679 American Airlines 4 2026-05-07
AAL2601 American Airlines 4 2026-04-17
AAL2524 - 4 2026-07-08
AAL2458 American Airlines 4 2026-04-18
AAL2119 American Airlines 4 2026-07-25
AAL2087 American Airlines 4 2026-06-08
AAL1882 American Airlines 4 2026-05-01
AAL1177 - 4 2026-04-13
AAL1050 - 4 2026-07-06
AAL922 American Airlines 3 2026-05-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL1709 DFW → EWR Jul 26, 20:05 UTCJul 26, 22:15 UTC2h 10m
2026-07-26 AAL1150 EWR → DFW Jul 26, 16:55 UTCJul 26, 18:25 UTC1h 30m
2026-07-26 AAL1150 EWR → DFW Jul 26, 16:53 UTCJul 26, 18:21 UTC1h 28m
2026-07-26 AAL1150 EWR → DFW Jul 26, 14:15 UTCJul 26, 15:35 UTC1h 20m
2026-07-26 AAL2842 SFO → MIA Jul 26, 10:25 UTCJul 26, 12:15 UTC1h 50m
2026-07-26 AAL2842 SFO → MIA Jul 26, 10:23 UTCJul 26, 12:03 UTC1h 40m
2026-07-26 AAL2840 ORD → PHL Jul 26, 03:55 UTCJul 26, 05:35 UTC1h 40m
2026-07-26 AAL2443 JFK → PUJ Jul 26, 00:35 UTCJul 26, 02:05 UTC1h 30m
2026-07-25 AAL536 EWR → DFW Jul 25, 20:55 UTCJul 25, 22:20 UTC1h 25m
2026-07-25 AAL2073 DCA → MSY Jul 25, 16:00 UTCJul 25, 17:15 UTC1h 15m
2026-07-25 AAL2119 DCA → LGA Jul 25, 12:17 UTCJul 25, 14:39 UTC2h 22m
2026-07-25 AAL2119 DCA → LGA Jul 25, 12:20 UTCJul 25, 14:40 UTC2h 20m
2026-07-25 AAL1271 LAX → ORD Jul 25, 03:15 UTCJul 25, 05:15 UTC2h 0m
2026-07-24 AAL2759 PHL → DFW Jul 24, 23:40 UTCJul 25, 01:15 UTC1h 35m
2026-07-24 AAL2759 PHL → DFW Jul 24, 21:00 UTCJul 24, 22:15 UTC1h 15m
2026-07-24 AAL854 SEA → CLT Jul 24, 14:30 UTCJul 24, 18:50 UTC4h 20m
2026-07-24 AAL1487 JFK → PHX Jul 24, 04:35 UTCJul 24, 08:05 UTC3h 30m
2026-07-23 AAL2024 MIA → LGA Jul 23, 23:35 UTCJul 24, 02:20 UTC2h 45m
2026-07-23 AAL2024 MIA → LGA Jul 23, 23:33 UTCJul 24, 02:19 UTC2h 46m
2026-07-23 AAL352 CLT → DTW Jul 23, 17:55 UTCJul 23, 22:15 UTC4h 20m
2026-07-23 AAL3162 PHX → OKC Jul 23, 14:15 UTCJul 23, 16:10 UTC1h 55m
2026-07-23 AAL2209 DFW → IAH Jul 23, 06:40 UTCJul 23, 07:20 UTC40m
2026-07-23 AAL2209 DFW → IAH Jul 23, 06:37 UTCJul 23, 07:18 UTC41m
2026-07-22 AAL2459 CID → CLT Jul 22, 23:50 UTCJul 23, 02:30 UTC2h 40m
2026-07-22 AAL2459 CID → CLT Jul 22, 23:49 UTCJul 23, 02:31 UTC2h 42m
2026-07-22 AAL2459 CID → CLT Jul 22, 20:00 UTCJul 22, 22:30 UTC2h 30m
2026-07-22 AAL1241 LAS → DFW Jul 22, 15:15 UTCJul 22, 17:35 UTC2h 20m
2026-07-22 AAL2872 MCO → DFW Jul 22, 03:10 UTCJul 22, 05:25 UTC2h 15m
2026-07-22 AAL2872 MCO → DFW Jul 22, 02:50 UTCJul 22, 02:55 UTC5m
2026-07-21 AAL2594 SLC → DFW Jul 21, 23:25 UTCJul 22, 01:35 UTC2h 10m
2026-07-21 AAL2594 SLC → DFW Jul 21, 23:22 UTCJul 22, 01:30 UTC2h 8m
2026-07-21 AAL2594 - Jul 21, 20:00 UTCJul 21, 22:05 UTC2h 5m
2026-07-21 AAL3055 - Jul 21, 16:10 UTCJul 21, 18:40 UTC2h 30m
2026-07-21 AAL3055 - Jul 21, 12:25 UTCJul 21, 14:55 UTC2h 30m
2026-07-21 AAL2228 SFO → DFW Jul 21, 07:35 UTCJul 21, 10:45 UTC3h 10m
2026-07-21 AAL2228 DFW → SFO Jul 21, 03:10 UTCJul 21, 06:10 UTC3h 0m
2026-07-20 AAL2286 PHL → MIA Jul 20, 22:05 UTCJul 21, 01:25 UTC3h 20m
2026-07-20 AAL2286 PHL → MIA Jul 20, 17:35 UTCJul 20, 20:45 UTC3h 10m
2026-07-20 AAL1403 BWI → DFW Jul 20, 13:30 UTCJul 20, 16:00 UTC2h 30m
2026-07-20 AAL318Q CLT → BWI Jul 20, 11:15 UTCJul 20, 12:45 UTC1h 30m
2026-07-20 AAL318Q CLT → BWI Jul 20, 11:14 UTCJul 20, 12:14 UTC1h 0m
2026-07-19 AAL1552 - Jul 19, 23:25 UTCJul 20, 01:10 UTC1h 45m
2026-07-19 AAL1552 - Jul 19, 20:00 UTCJul 19, 21:40 UTC1h 40m
2026-07-19 AAL2074 - Jul 19, 17:00 UTCJul 19, 18:20 UTC1h 20m
2026-07-19 AAL2074 MCO → CLT Jul 19, 16:56 UTCJul 19, 18:11 UTC1h 15m
2026-07-19 AAL2074 - Jul 19, 14:20 UTCJul 19, 15:25 UTC1h 5m
2026-07-19 AAL2538 - Jul 19, 11:25 UTCJul 19, 12:40 UTC1h 15m
2026-07-19 AAL2538 TPA → CLT Jul 19, 11:21 UTCJul 19, 12:36 UTC1h 15m
2026-07-18 AAL844 DFW → TPA Jul 18, 22:34 UTCJul 19, 00:40 UTC2h 6m
2026-07-18 AAL844 DFW → TPA Jul 18, 22:35 UTCJul 19, 00:45 UTC2h 10m

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 N981UY page for operator, model, and routing details .

Mode-S ADB0B4 frequently asked

What is Mode-S code ADB0B4?
ADB0B4 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N981UY.
Where is Mode-S ADB0B4 registered?
Mode-S code ADB0B4 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 ADB0B4 broadcasting right now?
Yes. Mode-S ADB0B4 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ADB0B4, octal 53330264, decimal 11,382,964.
What flights does ADB0B4 operate?
Mode-S ADB0B4 has broadcast 20 distinct callsigns, including AAL2584, AAL2238, AAL466, AAL2635, AAL2456.