Apparatus

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sensors Mode-S transponder

A0681C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N125UW · AIRBUS A-320 · operated by AMERICAN AIRLINES INC

Hex
A0681C
Octal
50064034
Decimal
10,512,412
Country
US
Tail
N125UW
Type
A320
No current signal · last broadcast 8h ago
Flights observed
515
Distinct callsigns
20
Country
US
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S A0681C.

Country allocation

The ICAO 24-bit address A0681C 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
AAL2166 - 14 2026-07-14
AAL2414 American Airlines 12 2026-06-15
AAL2421 - 11 2026-07-09
AAL3233 - 10 2026-06-19
AAL1111 - 10 2026-07-08
AAL2433 American Airlines 9 2026-05-04
AAL2142 - 9 2026-06-28
AAL1802 - 9 2026-07-13
AAL2496 American Airlines 8 2026-04-26
AAL1801 - 8 2026-07-10
AAL425 - 7 2026-07-10
AAL2288 - 7 2026-07-03
AAL1993 - 7 2026-07-01
AAL1835 American Airlines 7 2026-05-30
AAL1783 American Airlines 7 2026-05-05
AAL1351 - 6 2026-06-19
AAL1087 - 6 2026-07-12
AAL506 American Airlines 5 2026-05-18
AAL3236 American Airlines 5 2026-05-14
AAL3134 American Airlines 5 2026-05-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AAL2166 MSY → DFW Jul 14, 16:30 UTCJul 14, 17:45 UTC1h 15m
2026-07-14 AAL2166 MSY → DFW Jul 14, 16:29 UTCJul 14, 17:42 UTC1h 13m
2026-07-14 AAL2166 - Jul 14, 14:10 UTCJul 14, 15:20 UTC1h 10m
2026-07-14 AAL3274 XNA → DFW Jul 14, 05:35 UTCJul 14, 06:30 UTC55m
2026-07-14 AAL3274 - Jul 14, 03:30 UTCJul 14, 04:25 UTC55m
2026-07-13 AAL1802 - Jul 13, 23:30 UTCJul 14, 01:00 UTC1h 30m
2026-07-13 AAL1802 - Jul 13, 21:05 UTCJul 13, 22:05 UTC1h 0m
2026-07-13 AAL3275 - Jul 13, 18:35 UTCJul 13, 19:20 UTC45m
2026-07-13 AAL3275 DFW → XNA Jul 13, 16:15 UTCJul 13, 17:00 UTC45m
2026-07-13 AAL802Q - Jul 13, 13:35 UTCJul 13, 14:45 UTC1h 10m
2026-07-13 AAL802Q ELP → DFW Jul 13, 13:23 UTCJul 13, 14:41 UTC1h 18m
2026-07-12 AAL1802 - Jul 12, 19:55 UTCJul 12, 20:55 UTC1h 0m
2026-07-12 AAL1087 BFL → DFW Jul 12, 15:02 UTCJul 12, 17:50 UTC2h 48m
2026-07-12 AAL1087 BFL → DFW Jul 12, 15:05 UTCJul 12, 18:01 UTC2h 55m
2026-07-12 AAL1110 DFW → BFL Jul 12, 04:35 UTCJul 12, 07:20 UTC2h 45m
2026-07-12 AAL644 - Jul 12, 01:15 UTCJul 12, 03:10 UTC1h 55m
2026-07-11 AAL644 DFW → TYS Jul 11, 22:15 UTCJul 12, 00:01 UTC1h 45m
2026-07-11 AAL1929 - Jul 11, 00:40 UTCJul 11, 01:35 UTC55m
2026-07-10 AAL1929 - Jul 10, 22:55 UTCJul 10, 23:35 UTC40m
2026-07-10 AAL2609 - Jul 10, 20:50 UTCJul 10, 21:35 UTC45m
2026-07-10 AAL2609 SAT → DFW Jul 10, 20:48 UTCJul 10, 21:35 UTC47m
2026-07-10 AAL1539 - Jul 10, 19:05 UTCJul 10, 19:45 UTC40m
2026-07-10 AAL1801 - Jul 10, 16:25 UTCJul 10, 17:35 UTC1h 10m
2026-07-10 AAL1801 - Jul 10, 13:40 UTCJul 10, 14:40 UTC1h 0m
2026-07-10 AAL426 - Jul 10, 10:15 UTCJul 10, 11:50 UTC1h 35m
2026-07-10 AAL425 DFW → CHA Jul 10, 01:25 UTCJul 10, 03:05 UTC1h 40m
2026-07-09 AAL2421 - Jul 9, 21:50 UTCJul 9, 23:20 UTC1h 30m
2026-07-09 AAL2421 DFW → DSM Jul 9, 19:20 UTCJul 9, 20:40 UTC1h 20m
2026-07-09 AAL2166 MSY → DFW Jul 9, 16:25 UTCJul 9, 17:45 UTC1h 20m
2026-07-09 AAL2166 DFW → MSY Jul 9, 14:15 UTCJul 9, 15:20 UTC1h 5m
2026-07-09 AAL2261 STL → DFW Jul 9, 10:35 UTCJul 9, 11:55 UTC1h 20m
2026-07-09 AAL3049 DFW → STL Jul 9, 03:25 UTCJul 9, 04:45 UTC1h 20m
2026-07-08 AAL1111 - Jul 8, 22:35 UTCJul 9, 01:20 UTC2h 45m
2026-07-08 AAL1111 DFW → YYZ Jul 8, 18:30 UTCJul 8, 21:05 UTC2h 35m
2026-07-08 AAL1087 BFL → DFW Jul 8, 14:10 UTCJul 8, 16:52 UTC2h 42m
2026-07-08 AAL1087 BFL → DFW Jul 8, 14:10 UTCJul 8, 16:55 UTC2h 45m
2026-07-07 AAL1110 DFW → BFL Jul 7, 18:35 UTCJul 7, 21:15 UTC2h 40m
2026-07-07 AAL1087 BFL → DFW Jul 7, 14:07 UTCJul 7, 16:55 UTC2h 48m
2026-07-07 AAL1087 BFL → DFW Jul 7, 14:10 UTCJul 7, 17:05 UTC2h 55m
2026-07-07 AAL1110 DFW → BFL Jul 7, 03:55 UTCJul 7, 06:35 UTC2h 40m
2026-07-07 AAL1802 - Jul 7, 01:15 UTCJul 7, 02:35 UTC1h 20m
2026-07-07 AAL1802 ELP → DFW Jul 7, 00:57 UTCJul 7, 02:26 UTC1h 29m
2026-07-06 AAL1802 - Jul 6, 22:45 UTCJul 6, 23:45 UTC1h 0m
2026-07-06 AAL1413 AUS → DFW Jul 6, 20:55 UTCJul 6, 21:35 UTC40m
2026-07-06 AAL1413 DFW → AUS Jul 6, 18:55 UTCJul 6, 19:40 UTC45m
2026-07-06 AAL802Q - Jul 6, 16:05 UTCJul 6, 17:15 UTC1h 10m
2026-07-06 AAL1802 - Jul 6, 01:55 UTCJul 6, 02:20 UTC25m
2026-07-05 AAL1802 - Jul 5, 23:00 UTCJul 5, 23:25 UTC25m
2026-07-05 AAL1802 - Jul 5, 21:30 UTCJul 5, 22:30 UTC1h 0m
2026-07-05 AAL1402 AUS → DFW Jul 5, 19:25 UTCJul 5, 20:05 UTC40m

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 N125UW page for operator, model, and routing details .

Mode-S A0681C frequently asked

What is Mode-S code A0681C?
A0681C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N125UW.
Where is Mode-S A0681C registered?
Mode-S code A0681C 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 A0681C broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A0681C, octal 50064034, decimal 10,512,412.
What flights does A0681C operate?
Mode-S A0681C has broadcast 20 distinct callsigns, including AAL2166, AAL2414, AAL2421, AAL3233, AAL1111.