Apparatus

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sensors Mode-S transponder

ACC76B

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N922US · AIRBUS A-321 · operated by AMERICAN AIRLINES INC

Hex
ACC76B
Octal
53143553
Decimal
11,323,243
Country
US
Tail
N922US
Type
A321
No current signal · last broadcast 1h ago
Flights observed
442
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S ACC76B.

Country allocation

The ICAO 24-bit address ACC76B 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
AAL2242 American Airlines 6 2026-05-02
AAL707 American Airlines 5 2026-05-27
AAL2376 - 5 2026-07-10
AAL2221 - 5 2026-07-11
AAL750 American Airlines 4 2026-05-04
AAL487 American Airlines 4 2026-05-10
AAL381 American Airlines 4 2026-05-04
AAL2928 - 4 2026-04-13
AAL2634 American Airlines 4 2026-06-06
AAL1543 - 4 2026-04-13
AAL1373 - 4 2026-07-11
AAL765 American Airlines 3 2026-04-16
AAL624 - 3 2026-06-26
AAL492 American Airlines 3 2026-05-30
AAL3330 American Airlines 3 2026-04-20
AAL3138 American Airlines 3 2026-05-07
AAL2971 American Airlines 3 2026-04-20
AAL2910 - 3 2026-07-02
AAL2857 - 3 2026-07-14
AAL2766 - 3 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AAL674 - Jul 14, 19:05 UTCJul 14, 21:30 UTC2h 25m
2026-07-14 AAL2857 - Jul 14, 14:50 UTCJul 14, 17:15 UTC2h 25m
2026-07-14 AAL2857 MIA → CUR Jul 14, 14:47 UTCJul 14, 17:25 UTC2h 38m
2026-07-14 AAL873 BOS → MIA Jul 14, 10:15 UTCJul 14, 12:55 UTC2h 40m
2026-07-14 AAL1054 - Jul 14, 03:30 UTCJul 14, 06:20 UTC2h 50m
2026-07-14 AAL1054 MIA → BOS Jul 14, 03:27 UTCJul 14, 06:17 UTC2h 50m
2026-07-13 AAL910R ORD → MIA Jul 13, 22:38 UTCJul 14, 01:17 UTC2h 39m
2026-07-13 AAL910R ORD → MIA Jul 13, 22:40 UTCJul 14, 01:20 UTC2h 40m
2026-07-13 AAL3015 ATL → ORD Jul 13, 19:12 UTCJul 13, 21:05 UTC1h 53m
2026-07-13 AAL3015 ATL → ORD Jul 13, 19:15 UTCJul 13, 21:05 UTC1h 50m
2026-07-13 AAL2125 - Jul 13, 16:00 UTCJul 13, 17:35 UTC1h 35m
2026-07-13 AAL1672 - Jul 13, 13:30 UTCJul 13, 14:30 UTC1h 0m
2026-07-13 AAL1672 ORD → MCI Jul 13, 13:29 UTCJul 13, 14:37 UTC1h 8m
2026-07-13 AAL2919 - Jul 13, 07:50 UTCJul 13, 11:35 UTC3h 45m
2026-07-13 AAL2766 - Jul 13, 00:50 UTCJul 13, 03:20 UTC2h 30m
2026-07-12 AAL2647 - Jul 12, 21:10 UTCJul 12, 22:15 UTC1h 5m
2026-07-12 AAL2954 - Jul 12, 16:20 UTCJul 12, 17:40 UTC1h 20m
2026-07-12 AAL2954 LAX → SJD Jul 12, 16:19 UTCJul 12, 18:29 UTC2h 10m
2026-07-11 AAL2221 - Jul 11, 22:10 UTCJul 12, 02:15 UTC4h 5m
2026-07-11 AAL2221 ATL → LAX Jul 11, 22:09 UTCJul 12, 02:23 UTC4h 14m
2026-07-11 AAL2221 - Jul 11, 20:40 UTCJul 11, 20:45 UTC5m
2026-07-11 AAL1373 - Jul 11, 16:40 UTCJul 11, 18:45 UTC2h 5m
2026-07-11 AAL1373 PHX → ATL Jul 11, 16:38 UTCJul 11, 20:24 UTC3h 46m
2026-07-11 AAL625 - Jul 11, 13:45 UTCJul 11, 14:40 UTC55m
2026-07-11 AAL1011 DFW → SAN Jul 11, 03:01 UTCJul 11, 05:25 UTC2h 25m
2026-07-10 AAL2376 - Jul 10, 22:55 UTCJul 11, 01:20 UTC2h 25m
2026-07-10 AAL2376 DFW → LAS Jul 10, 18:50 UTCJul 10, 21:05 UTC2h 15m
2026-07-10 AAL1241 LAS → DFW Jul 10, 15:10 UTCJul 10, 17:25 UTC2h 15m
2026-07-10 AAL1241 LAS → DFW Jul 10, 15:08 UTCJul 10, 17:19 UTC2h 11m
2026-07-10 AAL1771 DFW → LAS Jul 10, 01:35 UTCJul 10, 03:50 UTC2h 15m
2026-07-09 AAL1415 YVR → DFW Jul 9, 20:15 UTCJul 10, 00:00 UTC3h 45m
2026-07-09 AAL1415 DFW → YVR Jul 9, 14:00 UTCJul 9, 17:55 UTC3h 55m
2026-07-09 AAL579 AUS → DFW Jul 9, 11:05 UTCJul 9, 11:45 UTC40m
2026-07-09 AAL2707 DFW → AUS Jul 9, 02:33 UTCJul 9, 03:05 UTC32m
2026-07-09 AAL2707 DFW → AUS Jul 9, 02:35 UTCJul 9, 03:05 UTC30m
2026-07-08 AAL436 - Jul 8, 22:15 UTCJul 9, 01:10 UTC2h 55m
2026-07-08 AAL436 - Jul 8, 17:50 UTCJul 8, 20:55 UTC3h 5m
2026-07-08 AAL977 DFW → MTJ Jul 8, 13:35 UTCJul 8, 16:20 UTC2h 45m
2026-07-08 AAL2469 - Jul 8, 02:20 UTCJul 8, 04:55 UTC2h 35m
2026-07-07 AAL2603 PHX → DFW Jul 7, 03:30 UTCJul 7, 05:30 UTC2h 0m
2026-07-06 AAL3033 - Jul 6, 22:20 UTCJul 7, 02:20 UTC4h 0m
2026-07-06 AAL3033 RDU → PHX Jul 6, 22:17 UTCJul 7, 02:16 UTC3h 59m
2026-07-06 AAL2396 - Jul 6, 16:10 UTCJul 6, 21:05 UTC4h 55m
2026-07-05 AAL1649 - Jul 5, 17:40 UTCJul 6, 01:05 UTC7h 25m
2026-07-05 AAL465 - Jul 5, 12:50 UTCJul 5, 15:10 UTC2h 20m
2026-07-04 AAL2117 DFW → MCO Jul 4, 20:35 UTCJul 4, 22:55 UTC2h 20m
2026-07-04 AAL484 GEG → DFW Jul 4, 12:20 UTCJul 4, 15:15 UTC2h 55m
2026-07-04 AAL1446 DFW → GEG Jul 4, 01:45 UTCJul 4, 05:00 UTC3h 15m
2026-07-04 AAL1446 DFW → GEG Jul 4, 01:45 UTCJul 4, 05:01 UTC3h 16m
2026-07-03 AAL2334 - Jul 3, 20:00 UTCJul 3, 22:45 UTC2h 45m

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 N922US page for operator, model, and routing details .

Mode-S ACC76B frequently asked

What is Mode-S code ACC76B?
ACC76B is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N922US.
Where is Mode-S ACC76B registered?
Mode-S code ACC76B 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 ACC76B broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex ACC76B, octal 53143553, decimal 11,323,243.
What flights does ACC76B operate?
Mode-S ACC76B has broadcast 20 distinct callsigns, including AAL2242, AAL707, AAL2376, AAL2221, AAL750.