Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A0CDF3

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N151AN · AIRBUS A-321 · operated by AMERICAN AIRLINES INC

Hex
A0CDF3
Octal
50146763
Decimal
10,538,483
Country
US
Tail
N151AN
Type
A321
Transponder active on ground
Flights observed
437
Distinct callsigns
20
Country
US
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S A0CDF3.

Country allocation

The ICAO 24-bit address A0CDF3 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
AAL870 American Airlines 7 2026-06-20
AAL2319 American Airlines 7 2026-05-03
AAL2525 American Airlines 6 2026-07-06
AAL1849 - 6 2026-06-22
AAL2759 American Airlines 5 2026-06-15
AAL1880 American Airlines 5 2026-05-07
AAL793 - 4 2026-06-29
AAL3162 American Airlines 4 2026-04-16
AAL2786 American Airlines 4 2026-06-14
AAL2634 American Airlines 4 2026-05-07
AAL2602 - 4 2026-07-02
AAL2562 American Airlines 4 2026-04-14
AAL1486 - 4 2026-07-05
AAL1075 - 4 2026-07-03
AAL857 American Airlines 3 2026-07-03
AAL777 American Airlines 3 2026-06-04
AAL413 American Airlines 3 2026-05-12
AAL3234 American Airlines 3 2026-04-22
AAL3062 American Airlines 3 2026-05-18
AAL3052 American Airlines 3 2026-04-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AAL3242 DFW → PHL Jul 14, 02:15 UTCJul 14, 05:00 UTC2h 45m
2026-07-13 AAL2219 CUN → DFW Jul 13, 20:30 UTCJul 13, 23:20 UTC2h 50m
2026-07-13 AAL2219 CUN → DFW Jul 13, 20:26 UTCJul 13, 23:06 UTC2h 40m
2026-07-13 AAL2874 DFW → CUN Jul 13, 16:47 UTCJul 13, 19:10 UTC2h 23m
2026-07-13 AAL2874 DFW → CUN Jul 13, 16:50 UTCJul 13, 19:15 UTC2h 25m
2026-07-12 AAL1090 DEN → DFW Jul 12, 20:47 UTCJul 12, 22:16 UTC1h 29m
2026-07-12 AAL1090 DEN → DFW Jul 12, 20:50 UTCJul 12, 22:20 UTC1h 30m
2026-07-12 AAL662 DFW → DEN Jul 12, 04:45 UTCJul 12, 06:20 UTC1h 35m
2026-07-12 AAL662 DFW → DEN Jul 12, 04:45 UTCJul 12, 06:20 UTC1h 35m
2026-07-11 AAL1595 BOS → DFW Jul 11, 23:35 UTCJul 12, 03:15 UTC3h 40m
2026-07-11 AAL1595 DFW → BOS Jul 11, 18:15 UTCJul 11, 21:30 UTC3h 15m
2026-07-11 AAL2521 YYC → DFW Jul 11, 13:05 UTCJul 11, 16:15 UTC3h 10m
2026-07-11 AAL511 DFW → YYC Jul 11, 00:30 UTCJul 11, 03:40 UTC3h 10m
2026-07-10 AAL2287 PDX → DFW Jul 10, 19:40 UTCJul 10, 22:50 UTC3h 10m
2026-07-10 AAL2287 DFW → PDX Jul 10, 15:10 UTCJul 10, 18:35 UTC3h 25m
2026-07-10 AAL2268 TPA → DFW Jul 10, 09:50 UTCJul 10, 12:10 UTC2h 20m
2026-07-10 AAL2268 TPA → DFW Jul 10, 09:48 UTCJul 10, 12:01 UTC2h 13m
2026-07-10 AAL2256 DFW → TPA Jul 10, 02:20 UTCJul 10, 04:25 UTC2h 5m
2026-07-09 AAL2113 PHX → DFW Jul 9, 22:25 UTCJul 10, 00:35 UTC2h 10m
2026-07-09 AAL2113 PHX → DFW Jul 9, 22:25 UTCJul 10, 00:29 UTC2h 4m
2026-07-09 AAL2113 DFW → PHX Jul 9, 18:55 UTCJul 9, 20:50 UTC1h 55m
2026-07-09 AAL373 - Jul 9, 14:35 UTCJul 9, 17:10 UTC2h 35m
2026-07-09 AAL373 SAN → DFW Jul 9, 14:31 UTCJul 9, 17:09 UTC2h 38m
2026-07-09 AAL1011 DFW → SAN Jul 9, 02:45 UTCJul 9, 05:15 UTC2h 30m
2026-07-09 AAL1011 DFW → SAN Jul 9, 02:45 UTCJul 9, 05:10 UTC2h 25m
2026-07-08 AAL2594 SLC → DFW Jul 8, 23:10 UTCJul 9, 01:15 UTC2h 5m
2026-07-08 AAL2594 DFW → SLC Jul 8, 19:45 UTCJul 8, 22:00 UTC2h 15m
2026-07-08 AAL1055 - Jul 8, 15:45 UTCJul 8, 18:25 UTC2h 40m
2026-07-07 AAL2056 - Jul 7, 21:35 UTCJul 8, 02:00 UTC4h 25m
2026-07-07 AAL2279 - Jul 7, 18:10 UTCJul 7, 19:40 UTC1h 30m
2026-07-07 AAL2279 - Jul 7, 15:15 UTCJul 7, 16:50 UTC1h 35m
2026-07-07 AAL346 - Jul 7, 12:15 UTCJul 7, 13:20 UTC1h 5m
2026-07-07 AAL3087 - Jul 7, 03:55 UTCJul 7, 05:05 UTC1h 10m
2026-07-06 AAL2525 ORD → MCO Jul 6, 19:55 UTCJul 7, 00:35 UTC4h 40m
2026-07-06 AAL2525 ORD → MCO Jul 6, 13:30 UTCJul 6, 18:30 UTC5h 0m
2026-07-05 AAL1486 - Jul 5, 20:00 UTCJul 5, 20:55 UTC55m
2026-07-05 AAL1486 BNA → CLT Jul 5, 20:00 UTCJul 5, 20:53 UTC53m
2026-07-05 AAL3073 - Jul 5, 15:55 UTCJul 5, 18:55 UTC3h 0m
2026-07-04 AAL1984 - Jul 4, 23:20 UTCJul 5, 03:55 UTC4h 35m
2026-07-04 AAL1984 PHL → PHX Jul 4, 23:15 UTCJul 5, 03:52 UTC4h 37m
2026-07-04 AAL1984 PHL → PHL Jul 4, 22:30 UTCJul 4, 22:45 UTC15m
2026-07-04 AAL2175 CUN → PHL Jul 4, 17:40 UTCJul 4, 21:05 UTC3h 25m
2026-07-04 AAL2175 CUN → PHL Jul 4, 17:39 UTCJul 4, 20:55 UTC3h 16m
2026-07-04 AAL1262 PHL → CUN Jul 4, 12:55 UTCJul 4, 16:05 UTC3h 10m
2026-07-04 AAL2500 - Jul 4, 06:55 UTCJul 4, 10:15 UTC3h 20m
2026-07-04 AAL2500 - Jul 4, 01:35 UTCJul 4, 05:20 UTC3h 45m
2026-07-04 AAL2500 PHL → PHL Jul 4, 01:20 UTCJul 4, 01:25 UTC5m
2026-07-03 AAL857 PHL → MBJ Jul 3, 21:35 UTCJul 3, 23:50 UTC2h 15m
2026-07-03 AAL857 PHL → MBJ Jul 3, 20:38 UTCJul 3, 23:50 UTC3h 12m
2026-07-03 AAL1075 - Jul 3, 16:00 UTCJul 3, 18:10 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 N151AN page for operator, model, and routing details .

Mode-S A0CDF3 frequently asked

What is Mode-S code A0CDF3?
A0CDF3 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N151AN.
Where is Mode-S A0CDF3 registered?
Mode-S code A0CDF3 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 A0CDF3 broadcasting right now?
Mode-S A0CDF3 is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A0CDF3, octal 50146763, decimal 10,538,483.
What flights does A0CDF3 operate?
Mode-S A0CDF3 has broadcast 20 distinct callsigns, including AAL870, AAL2319, AAL2525, AAL1849, AAL2759.