Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AC7A52

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N903AA · AIRBUS A-321 · operated by AMERICAN AIRLINES INC

Hex
AC7A52
Octal
53075122
Decimal
11,303,506
Country
US
Tail
N903AA
Type
A321
No current signal · last broadcast Jul 26, 22:30 UTC
Flights observed
496
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 22:30 UTC

Last known position

Most recent position reported by Mode-S AC7A52.

Country allocation

The ICAO 24-bit address AC7A52 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
AAL2633 - 6 2026-07-20
AAL870 American Airlines 5 2026-05-29
AAL2993 American Airlines 5 2026-04-18
AAL2876 American Airlines 5 2026-07-21
AAL2534 American Airlines 5 2026-06-09
AAL2430 - 5 2026-06-29
AAL2407 - 5 2026-07-09
AAL2109 American Airlines 5 2026-06-13
AAL1850 American Airlines 5 2026-06-23
AAL613 American Airlines 4 2026-07-26
AAL2900 - 4 2026-06-23
AAL2852 American Airlines 4 2026-04-24
AAL2845 American Airlines 4 2026-05-01
AAL2615 - 4 2026-06-25
AAL2319 - 4 2026-06-26
AAL2284 - 4 2026-06-22
AAL1919 - 4 2026-06-25
AAL1886 - 4 2026-07-10
AAL1407 American Airlines 4 2026-04-26
AAL1277 American Airlines 4 2026-05-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL1803 DCA → MIA Jul 26, 21:10 UTCJul 26, 22:30 UTC1h 20m
2026-07-26 AAL3079 PHL → MSY Jul 26, 16:25 UTCJul 26, 19:20 UTC2h 55m
2026-07-26 AAL2919 EWR → ORD Jul 26, 11:15 UTCJul 26, 14:50 UTC3h 35m
2026-07-26 AAL613 DFW → EWR Jul 26, 05:10 UTCJul 26, 08:55 UTC3h 46m
2026-07-26 AAL613 DFW → EWR Jul 26, 05:08 UTCJul 26, 08:50 UTC3h 42m
2026-07-25 AAL619 SLC → MIA Jul 25, 15:40 UTCJul 26, 01:35 UTC9h 55m
2026-07-25 AAL581 SFO → MIA Jul 25, 11:00 UTCJul 25, 13:40 UTC2h 40m
2026-07-25 AAL581 SFO → MIA Jul 25, 10:56 UTCJul 25, 13:36 UTC2h 40m
2026-07-25 AAL2942 MIA → BOS Jul 25, 04:05 UTCJul 25, 08:45 UTC4h 40m
2026-07-25 AAL2930 PWM → CLT Jul 25, 00:35 UTCJul 25, 01:30 UTC55m
2026-07-24 AAL3203 ORD → FLL Jul 24, 18:10 UTCJul 24, 22:45 UTC4h 35m
2026-07-24 AAL585R PHX → PHL Jul 24, 12:21 UTCJul 24, 16:45 UTC4h 24m
2026-07-24 AAL585R PHX → PHL Jul 24, 12:25 UTCJul 24, 16:40 UTC4h 15m
2026-07-24 AAL1321 LGA → ORD Jul 24, 04:30 UTCJul 24, 06:05 UTC1h 35m
2026-07-23 AAL2997 BOS → DFW Jul 23, 23:45 UTCJul 24, 03:00 UTC3h 15m
2026-07-23 AAL1583 CMH → DFW Jul 23, 17:20 UTCJul 23, 20:45 UTC3h 25m
2026-07-23 AAL1583 CMH → DFW Jul 23, 12:30 UTCJul 23, 15:45 UTC3h 15m
2026-07-21 AAL2876 PHL → DEN Jul 21, 22:35 UTCJul 22, 00:15 UTC1h 40m
2026-07-21 AAL2876 PHL → DEN Jul 21, 19:25 UTCJul 21, 21:05 UTC1h 40m
2026-07-21 AAL2305 SFO → DFW Jul 21, 14:30 UTCJul 21, 17:30 UTC3h 0m
2026-07-20 AAL2810 EWR → MIA Jul 20, 22:50 UTCJul 21, 01:45 UTC2h 55m
2026-07-20 AAL2633 - Jul 20, 18:15 UTCJul 20, 21:20 UTC3h 5m
2026-07-20 AAL2633 SMF → DFW Jul 20, 18:14 UTCJul 20, 21:19 UTC3h 5m
2026-07-20 AAL2633 DFW → SMF Jul 20, 13:55 UTCJul 20, 16:40 UTC2h 45m
2026-07-18 AAL681 CUN → DFW Jul 18, 00:15 UTCJul 18, 02:35 UTC2h 20m
2026-07-17 AAL1507 - Jul 17, 20:55 UTCJul 17, 23:05 UTC2h 10m
2026-07-17 AAL1507 DFW → CUN Jul 17, 20:53 UTCJul 17, 23:04 UTC2h 11m
2026-07-17 AAL3019 - Jul 17, 16:49 UTCJul 17, 19:20 UTC2h 30m
2026-07-17 AAL3290 DFW → MIA Jul 17, 12:25 UTCJul 17, 15:15 UTC2h 50m
2026-07-17 AAL727 SEA → DFW Jul 17, 03:45 UTCJul 17, 07:14 UTC3h 30m
2026-07-16 AAL727 DFW → SEA Jul 16, 22:45 UTCJul 17, 02:20 UTC3h 35m
2026-07-16 AAL2874 TPA → DFW Jul 16, 11:15 UTCJul 16, 13:20 UTC2h 5m
2026-07-15 AAL844 DFW → TPA Jul 15, 23:05 UTCJul 16, 01:10 UTC2h 5m
2026-07-15 AAL2607 SLC → DFW Jul 15, 18:40 UTCJul 15, 20:55 UTC2h 15m
2026-07-15 AAL2607 DFW → SLC Jul 15, 15:05 UTCJul 15, 17:10 UTC2h 5m
2026-07-15 AAL760 - Jul 15, 10:45 UTCJul 15, 12:30 UTC1h 45m
2026-07-15 AAL760 ORD → DFW Jul 15, 10:43 UTCJul 15, 12:35 UTC1h 52m
2026-07-15 AAL3137 PHX → ORD Jul 15, 02:30 UTCJul 15, 05:45 UTC3h 15m
2026-07-14 AAL2986 - Jul 14, 22:45 UTCJul 15, 01:10 UTC2h 25m
2026-07-14 AAL2986 PDX → PHX Jul 14, 22:43 UTCJul 15, 01:09 UTC2h 26m
2026-07-14 AAL2545 ORD → PDX Jul 14, 17:30 UTCJul 14, 21:00 UTC3h 30m
2026-07-14 AAL1059 DFW → ORD Jul 14, 13:44 UTCJul 14, 15:42 UTC1h 58m
2026-07-14 AAL1059 DFW → ORD Jul 14, 13:45 UTCJul 14, 15:40 UTC1h 55m
2026-07-14 AAL2605 - Jul 14, 09:30 UTCJul 14, 11:45 UTC2h 15m
2026-07-14 AAL542 DFW → RDU Jul 14, 05:15 UTCJul 14, 07:40 UTC2h 25m
2026-07-13 AAL2041 - Jul 13, 21:05 UTCJul 14, 00:15 UTC3h 10m
2026-07-13 AAL2041 DFW → LAX Jul 13, 17:00 UTCJul 13, 19:30 UTC2h 30m
2026-07-13 AAL484 GEG → DFW Jul 13, 12:30 UTCJul 13, 15:35 UTC3h 5m
2026-07-13 AAL1446 DFW → GEG Jul 13, 01:50 UTCJul 13, 04:55 UTC3h 5m
2026-07-12 AAL1199 HWO → DFW Jul 12, 20:25 UTCJul 12, 23:40 UTC3h 15m

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 N903AA page for operator, model, and routing details .

Mode-S AC7A52 frequently asked

What is Mode-S code AC7A52?
AC7A52 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N903AA.
Where is Mode-S AC7A52 registered?
Mode-S code AC7A52 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 AC7A52 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AC7A52, octal 53075122, decimal 11,303,506.
What flights does AC7A52 operate?
Mode-S AC7A52 has broadcast 20 distinct callsigns, including AAL2633, AAL870, AAL2993, AAL2876, AAL2534.