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
Broadcasting now · callsign AAL2131 · 34,000 ft
Flights observed
519
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:45 UTC

Current position

A0CDF3 is currently broadcasting. Map zoomed to live position.

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
AAL2562 - 7 2026-07-16
AAL2319 American Airlines 7 2026-05-03
AAL2634 American Airlines 6 2026-07-24
AAL2525 American Airlines 6 2026-07-06
AAL1849 - 6 2026-06-22
AAL717 American Airlines 5 2026-07-19
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
AAL3074 American Airlines 4 2026-07-26
AAL2786 American Airlines 4 2026-06-14
AAL2602 - 4 2026-07-02
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

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL1050 DFW → BUF Jul 26, 21:10 UTCJul 26, 22:45 UTC1h 35m
2026-07-26 AAL2012 BTV → PHL Jul 26, 15:20 UTCJul 26, 18:55 UTC3h 35m
2026-07-26 AAL2012 BTV → PHL Jul 26, 15:19 UTCJul 26, 18:51 UTC3h 32m
2026-07-26 AAL3074 ORD → RSW Jul 26, 11:50 UTCJul 26, 13:35 UTC1h 45m
2026-07-26 AAL3074 ORD → RSW Jul 26, 11:49 UTCJul 26, 13:36 UTC1h 47m
2026-07-26 AAL3163 FLL → ORD Jul 26, 00:30 UTCJul 26, 04:40 UTC4h 10m
2026-07-25 AAL3220 SBP → PHX Jul 25, 19:10 UTCJul 25, 22:55 UTC3h 45m
2026-07-25 AAL3220 SBP → PHX Jul 25, 19:09 UTCJul 25, 22:53 UTC3h 44m
2026-07-25 AAL1857 ALB → CLT Jul 25, 15:35 UTCJul 25, 17:40 UTC2h 5m
2026-07-25 AAL1857 ALB → CLT Jul 25, 15:34 UTCJul 25, 17:46 UTC2h 12m
2026-07-25 AAL1171 MIA → LGA Jul 25, 11:35 UTCJul 25, 13:55 UTC2h 20m
2026-07-25 AAL2263 CLT → ALB Jul 25, 02:25 UTCJul 25, 04:25 UTC2h 0m
2026-07-25 AAL2263 CLT → ALB Jul 25, 02:20 UTCJul 25, 04:22 UTC2h 2m
2026-07-24 AAL2634 LAX → PHL Jul 24, 22:05 UTCJul 25, 01:10 UTC3h 5m
2026-07-24 AAL2634 LAX → PHL Jul 24, 17:35 UTCJul 24, 20:35 UTC3h 0m
2026-07-24 AAL1025 TUS → DFW Jul 24, 14:10 UTCJul 24, 16:00 UTC1h 50m
2026-07-24 AAL1207 DFW → TUS Jul 24, 01:10 UTCJul 24, 02:55 UTC1h 45m
2026-07-24 AAL1207 DFW → TUS Jul 24, 01:07 UTCJul 24, 02:54 UTC1h 47m
2026-07-23 AAL3109 IND → DFW Jul 23, 20:20 UTCJul 23, 22:40 UTC2h 20m
2026-07-23 AAL3109 IND → DFW Jul 23, 20:17 UTCJul 23, 22:38 UTC2h 21m
2026-07-23 AAL3109 IND → DFW Jul 23, 16:50 UTCJul 23, 19:10 UTC2h 20m
2026-07-23 AAL1090 TUL → DFW Jul 23, 13:40 UTCJul 23, 15:05 UTC1h 25m
2026-07-22 AAL1736 DFW → MSN Jul 22, 23:30 UTCJul 23, 02:25 UTC2h 55m
2026-07-22 AAL1736 DFW → MSN Jul 22, 23:29 UTCJul 23, 02:20 UTC2h 51m
2026-07-22 AAL1463 JAX → CLT Jul 22, 18:35 UTCJul 22, 21:00 UTC2h 25m
2026-07-22 AAL1463 JAX → CLT Jul 22, 18:31 UTCJul 22, 20:59 UTC2h 28m
2026-07-22 AAL1463 JAX → CLT Jul 22, 15:35 UTCJul 22, 17:25 UTC1h 50m
2026-07-22 AAL1704 MSY → DCA Jul 22, 12:35 UTCJul 22, 14:00 UTC1h 25m
2026-07-22 AAL2022 CLT → TPA Jul 22, 03:15 UTCJul 22, 04:25 UTC1h 10m
2026-07-22 AAL2394 ORD → ATL Jul 22, 00:40 UTCJul 22, 01:10 UTC30m
2026-07-21 AAL2394 ORD → ATL Jul 21, 23:10 UTCJul 21, 23:40 UTC30m
2026-07-21 AAL2390 DFW → LAS Jul 21, 20:40 UTCJul 21, 21:15 UTC35m
2026-07-21 AAL2390 DFW → LAS Jul 21, 20:39 UTCJul 21, 21:12 UTC33m
2026-07-21 AAL2390 DFW → LAS Jul 21, 19:05 UTCJul 21, 19:35 UTC30m
2026-07-21 AAL2073 DCA → MSY Jul 21, 16:36 UTCJul 21, 17:51 UTC1h 15m
2026-07-21 AAL2073 DCA → MSY Jul 21, 16:40 UTCJul 21, 17:55 UTC1h 15m
2026-07-21 AAL2119 DCA → LGA Jul 21, 13:00 UTCJul 21, 15:20 UTC2h 20m
2026-07-21 AAL2003 DCA → LGA Jul 21, 06:40 UTCJul 21, 10:05 UTC3h 25m
2026-07-21 AAL2003 DCA → LGA Jul 21, 01:40 UTCJul 21, 05:00 UTC3h 20m
2026-07-20 AAL2356 PHL → DFW Jul 20, 21:05 UTCJul 20, 23:45 UTC2h 40m
2026-07-20 AAL2822 TPA → PHL Jul 20, 17:05 UTCJul 20, 19:15 UTC2h 10m
2026-07-20 AAL2822 TPA → PHL Jul 20, 17:02 UTCJul 20, 19:15 UTC2h 13m
2026-07-20 AAL2822 PHL → TPA Jul 20, 13:10 UTCJul 20, 15:15 UTC2h 5m
2026-07-20 AAL2727 ORD → PHL Jul 20, 10:05 UTCJul 20, 11:10 UTC1h 5m
2026-07-20 AAL2727 ORD → PHL Jul 20, 10:00 UTCJul 20, 11:08 UTC1h 8m
2026-07-20 AAL409R DFW → CLT Jul 20, 03:35 UTCJul 20, 05:35 UTC2h 0m
2026-07-19 AAL717 MUC → CLT Jul 19, 21:45 UTCJul 20, 01:20 UTC3h 35m
2026-07-19 AAL717 MUC → CLT Jul 19, 16:05 UTCJul 19, 19:40 UTC3h 35m
2026-07-19 AAL2078 JFK → CLT Jul 19, 12:55 UTCJul 19, 14:25 UTC1h 30m
2026-07-19 AAL577 DFW → DEN Jul 19, 01:35 UTCJul 19, 03:05 UTC1h 30m

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?
Yes. Mode-S A0CDF3 is currently airborne.
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, AAL2562, AAL2319, AAL2634, AAL2525.