Apparatus

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sensors Mode-S transponder

A76DF8

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N578UW · AIRBUS A-321 · operated by AMERICAN AIRLINES INC

Hex
A76DF8
Octal
51666770
Decimal
10,972,664
Country
US
Tail
N578UW
Type
A321
Transponder active on ground
Flights observed
459
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S A76DF8.

Country allocation

The ICAO 24-bit address A76DF8 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
AAL727 - 7 2026-07-09
AAL1960 - 6 2026-07-12
AAL1866 - 6 2026-07-08
AAL2719 American Airlines 5 2026-04-15
AAL2486 American Airlines 5 2026-04-16
AAL2409 - 5 2026-07-13
AAL3320 - 4 2026-06-26
AAL2988 - 4 2026-07-08
AAL2857 - 4 2026-06-27
AAL2715 American Airlines 4 2026-05-25
AAL2571 American Airlines 4 2026-05-11
AAL2444 - 4 2026-06-19
AAL1973 American Airlines 4 2026-06-07
AAL1463 American Airlines 4 2026-06-03
AAL1385 - 4 2026-06-15
AAL1262 American Airlines 4 2026-04-23
AAL1188 - 4 2026-07-14
AAL466 American Airlines 3 2026-05-28
AAL3251 American Airlines 3 2026-05-18
AAL2945 American Airlines 3 2026-05-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AAL3203 - Jul 14, 17:40 UTCJul 14, 21:40 UTC4h 0m
2026-07-14 AAL1188 DFW → PHL Jul 14, 12:20 UTCJul 14, 15:10 UTC2h 50m
2026-07-14 AAL1188 PHX → DFW Jul 14, 09:10 UTCJul 14, 11:00 UTC1h 50m
2026-07-14 AAL1022 - Jul 14, 05:15 UTCJul 14, 06:10 UTC55m
2026-07-14 AAL1022 CLT → BUF Jul 14, 05:12 UTCJul 14, 06:10 UTC58m
2026-07-14 AAL1022 - Jul 14, 03:00 UTCJul 14, 03:45 UTC45m
2026-07-13 AAL1155 DFW → PHX Jul 13, 22:40 UTCJul 14, 00:35 UTC1h 55m
2026-07-13 AAL283R PDX → DFW Jul 13, 17:13 UTCJul 13, 20:55 UTC3h 42m
2026-07-13 AAL283R PDX → DFW Jul 13, 17:15 UTCJul 13, 20:55 UTC3h 40m
2026-07-13 AAL620R - Jul 13, 12:50 UTCJul 13, 16:00 UTC3h 10m
2026-07-13 AAL620R DFW → PDX Jul 13, 12:47 UTCJul 13, 16:01 UTC3h 14m
2026-07-13 AAL2409 - Jul 13, 03:50 UTCJul 13, 05:10 UTC1h 20m
2026-07-12 AAL2409 - Jul 12, 22:15 UTCJul 13, 01:35 UTC3h 20m
2026-07-12 AAL1960 - Jul 12, 16:01 UTCJul 12, 20:30 UTC4h 30m
2026-07-12 AAL1960 SFO → CLT Jul 12, 15:56 UTCJul 12, 20:30 UTC4h 34m
2026-07-11 AAL2810 DFW → SFO Jul 11, 22:10 UTCJul 12, 01:20 UTC3h 10m
2026-07-11 AAL3284 - Jul 11, 17:40 UTCJul 11, 20:00 UTC2h 20m
2026-07-11 AAL3284 PHX → DFW Jul 11, 17:38 UTCJul 11, 19:45 UTC2h 7m
2026-07-11 AAL1282 EWR → PHX Jul 11, 11:30 UTCJul 11, 16:00 UTC4h 30m
2026-07-11 AAL2156 - Jul 11, 05:55 UTCJul 11, 10:00 UTC4h 5m
2026-07-11 AAL1073 - Jul 11, 00:55 UTCJul 11, 04:35 UTC3h 40m
2026-07-10 AAL1486 - Jul 10, 20:20 UTCJul 10, 21:15 UTC55m
2026-07-10 AAL1486 BNA → CLT Jul 10, 20:19 UTCJul 10, 21:12 UTC53m
2026-07-10 AAL3073 MSC → BNA Jul 10, 15:50 UTCJul 10, 18:45 UTC2h 55m
2026-07-10 AAL474 DFW → PHX Jul 10, 12:20 UTCJul 10, 14:20 UTC2h 0m
2026-07-10 AAL2732 - Jul 10, 03:00 UTCJul 10, 05:45 UTC2h 45m
2026-07-09 AAL2732 - Jul 9, 21:50 UTCJul 10, 00:25 UTC2h 35m
2026-07-09 AAL2238 - Jul 9, 17:30 UTCJul 9, 20:10 UTC2h 40m
2026-07-09 AAL2238 DFW → ONT Jul 9, 13:35 UTCJul 9, 16:00 UTC2h 25m
2026-07-09 AAL727 SEA → DFW Jul 9, 01:45 UTCJul 9, 05:00 UTC3h 15m
2026-07-08 AAL727 DFW → SEA Jul 8, 20:05 UTCJul 9, 00:00 UTC3h 55m
2026-07-08 AAL1866 - Jul 8, 16:00 UTCJul 8, 18:30 UTC2h 30m
2026-07-08 AAL1866 FLL → DFW Jul 8, 15:57 UTCJul 8, 18:23 UTC2h 26m
2026-07-08 AAL1866 DFW → FLL Jul 8, 12:20 UTCJul 8, 14:45 UTC2h 25m
2026-07-08 AAL2988 ORD → DFW Jul 8, 00:50 UTCJul 8, 02:35 UTC1h 45m
2026-07-07 AAL2988 - Jul 7, 18:40 UTCJul 7, 20:30 UTC1h 50m
2026-07-07 AAL2216 PDX → DFW Jul 7, 13:50 UTCJul 7, 17:05 UTC3h 15m
2026-07-07 AAL2298 DFW → PDX Jul 7, 01:40 UTCJul 7, 05:10 UTC3h 30m
2026-07-06 AAL767 SEA → DFW Jul 6, 19:20 UTCJul 6, 22:45 UTC3h 25m
2026-07-06 AAL767 DFW → SEA Jul 6, 14:15 UTCJul 6, 17:50 UTC3h 35m
2026-07-06 AAL3281 - Jul 6, 08:45 UTCJul 6, 11:40 UTC2h 55m
2026-07-06 AAL2430 - Jul 6, 03:50 UTCJul 6, 07:05 UTC3h 15m
2026-07-06 AAL2430 DFW → SFO Jul 6, 03:49 UTCJul 6, 07:05 UTC3h 16m
2026-07-05 AAL2385 MCO → DFW Jul 5, 23:45 UTCJul 6, 02:20 UTC2h 35m
2026-07-05 AAL2385 MCO → DFW Jul 5, 23:44 UTCJul 6, 02:05 UTC2h 21m
2026-07-05 AAL1660 - Jul 5, 21:15 UTCJul 5, 22:30 UTC1h 15m
2026-07-05 AAL854 - Jul 5, 14:25 UTCJul 5, 19:00 UTC4h 35m
2026-07-05 AAL854 SEA → CLT Jul 5, 14:25 UTCJul 5, 18:57 UTC4h 32m
2026-07-04 AAL2525 ORD → MCO Jul 4, 16:15 UTCJul 4, 21:10 UTC4h 55m
2026-07-04 AAL2569 - Jul 4, 14:00 UTCJul 4, 14:30 UTC30m

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 N578UW page for operator, model, and routing details .

Mode-S A76DF8 frequently asked

What is Mode-S code A76DF8?
A76DF8 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N578UW.
Where is Mode-S A76DF8 registered?
Mode-S code A76DF8 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 A76DF8 broadcasting right now?
Mode-S A76DF8 is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A76DF8, octal 51666770, decimal 10,972,664.
What flights does A76DF8 operate?
Mode-S A76DF8 has broadcast 20 distinct callsigns, including AAL727, AAL1960, AAL1866, AAL2719, AAL2486.