Apparatus

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sensors Mode-S transponder

AD8CEC

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N972UY · AIRBUS A-321 · operated by AMERICAN AIRLINES INC

Hex
AD8CEC
Octal
53306354
Decimal
11,373,804
Country
US
Tail
N972UY
Type
A321
No current signal · last broadcast Jul 26, 23:00 UTC
Flights observed
536
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 23:00 UTC

Last known position

Most recent position reported by Mode-S AD8CEC.

Country allocation

The ICAO 24-bit address AD8CEC 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
AAL2834 American Airlines 12 2026-05-15
AAL2769 American Airlines 7 2026-05-02
AAL2720 American Airlines 7 2026-04-20
AAL1895 American Airlines 7 2026-04-16
AAL783 - 5 2026-07-06
AAL2618 American Airlines 5 2026-05-16
AAL2459 - 5 2026-07-20
AAL2367 - 5 2026-07-16
AAL2193 American Airlines 5 2026-06-10
AAL2041 American Airlines 5 2026-07-24
AAL799 American Airlines 4 2026-05-21
AAL420 American Airlines 4 2026-04-14
AAL3290 American Airlines 4 2026-06-05
AAL3012 American Airlines 4 2026-06-03
AAL2857 American Airlines 4 2026-06-08
AAL2845 American Airlines 4 2026-05-02
AAL2390 - 4 2026-06-27
AAL2003 - 4 2026-06-15
AAL1628 - 4 2026-07-14
AAL1231 American Airlines 4 2026-04-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL2656 STL → LGA Jul 26, 17:25 UTCJul 26, 23:00 UTC5h 35m
2026-07-26 AAL1707 CLT → EWR Jul 26, 13:40 UTCJul 26, 16:00 UTC2h 20m
2026-07-26 AAL1707 CLT → EWR Jul 26, 13:37 UTCJul 26, 15:55 UTC2h 18m
2026-07-26 AAL849 DFW → BOS Jul 26, 07:40 UTCJul 26, 11:25 UTC3h 45m
2026-07-26 AAL332 LGA → MIA Jul 26, 03:20 UTCJul 26, 06:15 UTC2h 55m
2026-07-25 AAL2550 PHL → BOS Jul 25, 22:05 UTCJul 26, 01:35 UTC3h 30m
2026-07-25 AAL2550 PHL → BOS Jul 25, 16:50 UTCJul 25, 20:45 UTC3h 55m
2026-07-25 AAL465 SFO → PHL Jul 25, 12:55 UTCJul 25, 15:20 UTC2h 25m
2026-07-25 AAL465 SFO → PHL Jul 25, 12:50 UTCJul 25, 15:15 UTC2h 25m
2026-07-25 AAL1336 DFW → MCO Jul 25, 01:45 UTCJul 25, 04:15 UTC2h 30m
2026-07-24 AAL2041 CLT → MSP Jul 24, 21:25 UTCJul 25, 00:10 UTC2h 45m
2026-07-24 AAL2041 CLT → MSP Jul 24, 17:30 UTCJul 24, 20:00 UTC2h 30m
2026-07-24 AAL2075 MCO → DFW Jul 24, 13:40 UTCJul 24, 15:55 UTC2h 15m
2026-07-24 AAL364 DFW → SJC Jul 24, 01:25 UTCJul 24, 03:40 UTC2h 15m
2026-07-23 AAL2356 BDL → CLT Jul 23, 21:00 UTCJul 23, 23:50 UTC2h 50m
2026-07-23 AAL2822 AUS → PHX Jul 23, 16:45 UTCJul 23, 18:55 UTC2h 10m
2026-07-23 AAL2822 AUS → PHX Jul 23, 13:20 UTCJul 23, 15:30 UTC2h 10m
2026-07-23 AAL2076 YHZ → PHL Jul 23, 00:40 UTCJul 23, 02:55 UTC2h 15m
2026-07-22 AAL1024 SFO → DFW Jul 22, 18:50 UTCJul 22, 23:20 UTC4h 30m
2026-07-22 AAL1996 LAX → ORD Jul 22, 14:35 UTCJul 22, 17:05 UTC2h 30m
2026-07-22 AAL2612 DEN → DFW Jul 22, 11:10 UTCJul 22, 12:45 UTC1h 35m
2026-07-21 AAL1832 DEN → DFW Jul 21, 20:25 UTCJul 21, 21:55 UTC1h 30m
2026-07-21 AAL1832 DEN → DFW Jul 21, 20:23 UTCJul 21, 21:53 UTC1h 30m
2026-07-21 AAL417 LGA → ORD Jul 21, 16:00 UTCJul 21, 19:01 UTC3h 1m
2026-07-21 AAL417 LGA → ORD Jul 21, 16:00 UTCJul 21, 18:55 UTC2h 55m
2026-07-21 AAL2695 DCA → ORD Jul 21, 08:20 UTCJul 21, 13:10 UTC4h 50m
2026-07-21 AAL2430 SFO → DFW Jul 21, 03:50 UTCJul 21, 06:40 UTC2h 50m
2026-07-21 AAL2430 SFO → DFW Jul 21, 03:47 UTCJul 21, 06:40 UTC2h 53m
2026-07-20 AAL2459 - Jul 20, 23:30 UTCJul 21, 02:10 UTC2h 39m
2026-07-20 AAL2459 SAN → DFW Jul 20, 23:26 UTCJul 21, 02:07 UTC2h 41m
2026-07-20 AAL2459 - Jul 20, 19:35 UTCJul 20, 22:05 UTC2h 30m
2026-07-20 AAL2904 SFO → DFW Jul 20, 15:15 UTCJul 20, 18:20 UTC3h 5m
2026-07-20 AAL2904 SFO → DFW Jul 20, 15:13 UTCJul 20, 18:20 UTC3h 7m
2026-07-20 AAL3054 IND → PHL Jul 20, 03:25 UTCJul 20, 07:10 UTC3h 45m
2026-07-19 AAL619 - Jul 19, 13:25 UTCJul 19, 23:40 UTC10h 15m
2026-07-19 AAL1148 MSC → ORD Jul 19, 07:55 UTCJul 19, 11:05 UTC3h 10m
2026-07-19 AAL1636 CLT → DEN Jul 19, 04:25 UTCJul 19, 06:25 UTC2h 0m
2026-07-18 AAL2325 - Jul 18, 22:45 UTCJul 19, 01:55 UTC3h 10m
2026-07-18 AAL2325 SFO → DFW Jul 18, 22:45 UTCJul 19, 01:51 UTC3h 6m
2026-07-18 AAL1687 SJU → AUS Jul 18, 16:20 UTCJul 18, 20:55 UTC4h 35m
2026-07-18 AAL3222 - Jul 18, 13:30 UTCJul 18, 14:50 UTC1h 20m
2026-07-18 AAL3222 ORD → CLT Jul 18, 13:29 UTCJul 18, 14:49 UTC1h 20m
2026-07-18 AAL2502 MCO → PHL Jul 18, 10:40 UTCJul 18, 11:15 UTC35m
2026-07-18 AAL2502 MCO → PHL Jul 18, 10:40 UTCJul 18, 11:19 UTC39m
2026-07-18 AAL1096 ORD → GRR Jul 18, 06:40 UTCJul 18, 07:10 UTC30m
2026-07-18 AAL1881 - Jul 18, 02:19 UTCJul 18, 05:05 UTC2h 46m
2026-07-18 AAL1881 MIA → ORD Jul 18, 02:16 UTCJul 18, 05:06 UTC2h 50m
2026-07-17 AAL1800 BOS → CLT Jul 17, 22:20 UTCJul 17, 23:39 UTC1h 20m
2026-07-17 AAL1800 BOS → CLT Jul 17, 21:30 UTCJul 17, 21:39 UTC10m
2026-07-17 AAL1800 BOS → CLT Jul 17, 21:18 UTCJul 17, 23:40 UTC2h 22m

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 N972UY page for operator, model, and routing details .

Mode-S AD8CEC frequently asked

What is Mode-S code AD8CEC?
AD8CEC is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N972UY.
Where is Mode-S AD8CEC registered?
Mode-S code AD8CEC 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 AD8CEC broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 23:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AD8CEC, octal 53306354, decimal 11,373,804.
What flights does AD8CEC operate?
Mode-S AD8CEC has broadcast 20 distinct callsigns, including AAL2834, AAL2769, AAL2720, AAL1895, AAL783.