Apparatus

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sensors Mode-S transponder

AA4903

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N762AN · BOEING 777-200 · operated by AMERICAN AIRLINES INC

Hex
AA4903
Octal
52444403
Decimal
11,159,811
Country
US
Tail
N762AN
Type
B772
Broadcasting now · callsign AAL239 · 32,900 ft
Flights observed
244
Distinct callsigns
20
Country
US
Last broadcast
13m ago

Current position

AA4903 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address AA4903 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
AAL733 - 10 2026-06-28
AAL705 American Airlines 10 2026-04-14
AAL95 - 9 2026-07-12
AAL123 American Airlines 8 2026-05-27
AAL116 American Airlines 8 2026-05-28
AAL720 - 7 2026-07-14
AAL786 - 6 2026-06-28
AAL784 - 6 2026-07-10
AAL732 - 6 2026-06-28
AAL721 American Airlines 6 2026-05-31
AAL69 - 6 2026-06-19
AAL334 - 6 2026-07-12
AAL199 - 6 2026-06-21
AAL109 American Airlines 6 2026-06-10
AAL94 - 5 2026-07-08
AAL787 - 5 2026-07-10
AAL785 - 5 2026-07-11
AAL748 - 5 2026-07-11
AAL704 American Airlines 5 2026-04-13
AAL325 - 5 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AAL239 - Jul 14, 12:30 UTCJul 14, 14:45 UTC2h 15m
2026-07-14 AAL720 - Jul 14, 01:35 UTCJul 14, 10:10 UTC8h 35m
2026-07-13 AAL325 - Jul 13, 09:15 UTCJul 13, 20:20 UTC11h 5m
2026-07-13 AAL325 ATH → CLT Jul 13, 09:13 UTCJul 13, 20:18 UTC11h 5m
2026-07-12 AAL334 - Jul 12, 21:50 UTCJul 12, 22:40 UTC50m
2026-07-12 AAL334 JFK → ATH Jul 12, 21:50 UTCJul 13, 06:49 UTC8h 59m
2026-07-12 AAL95 MAD → JFK Jul 12, 08:40 UTCJul 12, 15:45 UTC7h 5m
2026-07-12 AAL95 MAD → JFK Jul 12, 08:38 UTCJul 12, 15:40 UTC7h 2m
2026-07-11 AAL748 - Jul 11, 21:15 UTCJul 11, 22:45 UTC1h 30m
2026-07-11 AAL748 CLT → MAD Jul 11, 21:12 UTCJul 12, 04:17 UTC7h 5m
2026-07-11 AAL785 - Jul 11, 07:55 UTCJul 11, 17:05 UTC9h 10m
2026-07-10 AAL784 - Jul 10, 21:55 UTCJul 11, 00:10 UTC2h 15m
2026-07-10 AAL784 CLT → MUC Jul 10, 21:53 UTCJul 11, 05:55 UTC8h 2m
2026-07-10 AAL787 - Jul 10, 09:30 UTCJul 10, 17:50 UTC8h 20m
2026-07-10 AAL787 CDG → CLT Jul 10, 09:25 UTCJul 10, 17:50 UTC8h 25m
2026-07-09 AAL42 - Jul 9, 22:15 UTCJul 10, 04:45 UTC6h 30m
2026-07-09 AAL95 - Jul 9, 08:30 UTCJul 9, 08:45 UTC15m
2026-07-09 AAL95 MAD → JFK Jul 9, 08:30 UTCJul 9, 15:48 UTC7h 18m
2026-07-08 AAL94 JFK → MAD Jul 8, 20:43 UTCJul 9, 03:10 UTC6h 27m
2026-07-08 AAL94 - Jul 8, 20:45 UTCJul 9, 03:15 UTC6h 30m
2026-07-08 AAL95 MAD → JFK Jul 8, 08:40 UTCJul 8, 15:45 UTC7h 5m
2026-07-07 AAL748 CLT → MAD Jul 7, 19:50 UTCJul 8, 03:10 UTC7h 20m
2026-07-06 AAL787 - Jul 6, 09:25 UTCJul 6, 17:50 UTC8h 25m
2026-07-05 AAL42 JFK → CDG Jul 5, 22:45 UTCJul 6, 05:05 UTC6h 20m
2026-07-05 AAL783D - Jul 5, 15:15 UTCJul 5, 20:10 UTC4h 55m
2026-07-03 AAL9602 - Jul 3, 16:20 UTCJul 4, 02:55 UTC10h 35m
2026-07-03 AAL9602 LAX → LHR Jul 3, 01:39 UTCJul 3, 11:17 UTC9h 38m
2026-07-03 AAL9602 - Jul 3, 01:40 UTCJul 3, 11:10 UTC9h 30m
2026-07-02 AAL3288 PHX → GJT Jul 2, 14:15 UTCJul 2, 18:55 UTC4h 40m
2026-07-02 AAL904 - Jul 2, 01:45 UTCJul 2, 09:20 UTC7h 35m
2026-07-01 AAL905 - Jul 1, 03:35 UTCJul 1, 10:40 UTC7h 5m
2026-07-01 AAL905 MIA → GIG Jul 1, 03:31 UTCJul 1, 11:12 UTC7h 41m
2026-06-30 AAL113 - Jun 30, 11:55 UTCJun 30, 20:55 UTC9h 0m
2026-06-29 AAL192 DFW → BCN Jun 29, 21:50 UTCJun 30, 07:25 UTC9h 35m
2026-06-29 AAL49 - Jun 29, 16:15 UTCJun 29, 18:10 UTC1h 55m
2026-06-29 AAL49 - Jun 29, 08:19 UTCJun 29, 16:10 UTC7h 50m
2026-06-28 AAL786 - Jun 28, 22:10 UTCJun 29, 05:20 UTC7h 10m
2026-06-28 AAL733 - Jun 28, 11:25 UTCJun 28, 12:39 UTC1h 15m
2026-06-28 AAL733 LHR → CLT Jun 28, 11:24 UTCJun 28, 19:28 UTC8h 4m
2026-06-28 AAL733 LHR → CLT Jun 28, 11:24 UTCJun 28, 19:34 UTC8h 10m
2026-06-28 AAL732 - Jun 28, 01:40 UTCJun 28, 08:59 UTC7h 20m
2026-06-27 AAL325 - Jun 27, 09:44 UTCJun 27, 20:19 UTC10h 35m
2026-06-26 AAL334 - Jun 26, 21:30 UTCJun 27, 02:45 UTC5h 15m
2026-06-26 AAL334 JFK → ATH Jun 26, 21:25 UTCJun 27, 06:03 UTC8h 38m
2026-06-26 AAL95 MAD → JFK Jun 26, 08:34 UTCJun 26, 16:05 UTC7h 30m
2026-06-26 AAL95 MAD → JFK Jun 26, 08:31 UTCJun 26, 16:04 UTC7h 33m
2026-06-25 AAL748 CLT → MAD Jun 25, 19:59 UTCJun 26, 03:00 UTC7h 0m
2026-06-25 AAL748 CLT → MAD Jun 25, 19:55 UTCJun 26, 02:58 UTC7h 3m
2026-06-24 AAL733 - Jun 24, 11:24 UTCJun 24, 19:49 UTC8h 25m
2026-06-24 AAL732 - Jun 24, 01:44 UTCJun 24, 08:49 UTC7h 5m

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 N762AN page for operator, model, and routing details .

Mode-S AA4903 frequently asked

What is Mode-S code AA4903?
AA4903 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N762AN.
Where is Mode-S AA4903 registered?
Mode-S code AA4903 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 AA4903 broadcasting right now?
Yes. Mode-S AA4903 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AA4903, octal 52444403, decimal 11,159,811.
What flights does AA4903 operate?
Mode-S AA4903 has broadcast 20 distinct callsigns, including AAL733, AAL705, AAL95, AAL123, AAL116.