Apparatus

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sensors Mode-S transponder

A777BF

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N580UW · AIRBUS A-321 · operated by AMERICAN AIRLINES INC

Hex
A777BF
Octal
51673677
Decimal
10,975,167
Country
US
Tail
N580UW
Type
A321
Broadcasting now · callsign AAL559 · 17,825 ft
Flights observed
459
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Current position

A777BF is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A777BF 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
AAL2642 American Airlines 6 2026-05-06
AAL605 American Airlines 5 2026-05-28
AAL2742 American Airlines 5 2026-05-09
AAL2069 - 5 2026-07-01
AAL2003 American Airlines 5 2026-05-22
AAL1056 - 5 2026-07-05
AAL903 American Airlines 4 2026-06-03
AAL702 - 4 2026-06-27
AAL3282 American Airlines 4 2026-05-12
AAL3187 - 4 2026-06-27
AAL2845 American Airlines 4 2026-05-12
AAL2458 - 4 2026-07-11
AAL2325 - 4 2026-06-29
AAL2297 American Airlines 4 2026-04-14
AAL2065 - 4 2026-07-08
AAL1595 American Airlines 4 2026-06-07
AAL1451 American Airlines 4 2026-04-16
AAL1192 - 4 2026-06-27
AAL352 American Airlines 3 2026-04-18
AAL3253 - 3 2026-04-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AAL2329 - Jul 14, 00:15 UTCJul 14, 03:45 UTC3h 30m
2026-07-13 AAL2777 - Jul 13, 22:00 UTCJul 13, 23:15 UTC1h 15m
2026-07-13 AAL2777 CLT → TPA Jul 13, 21:55 UTCJul 13, 23:12 UTC1h 17m
2026-07-13 AAL2390 - Jul 13, 19:35 UTCJul 13, 20:20 UTC45m
2026-07-13 AAL2390 RDU → CLT Jul 13, 19:33 UTCJul 13, 20:18 UTC45m
2026-07-13 AAL2390 - Jul 13, 17:45 UTCJul 13, 18:15 UTC30m
2026-07-13 AAL2381 - Jul 13, 15:30 UTCJul 13, 16:05 UTC35m
2026-07-13 AAL2381 - Jul 13, 13:30 UTCJul 13, 14:00 UTC30m
2026-07-13 AAL1439 - Jul 13, 11:00 UTCJul 13, 12:20 UTC1h 20m
2026-07-13 AAL370 - Jul 13, 03:10 UTCJul 13, 04:20 UTC1h 10m
2026-07-13 AAL2442 - Jul 13, 00:10 UTCJul 13, 01:45 UTC1h 35m
2026-07-13 AAL2442 RSW → CLT Jul 13, 00:10 UTCJul 13, 01:41 UTC1h 31m
2026-07-12 AAL2442 - Jul 12, 21:20 UTCJul 12, 23:05 UTC1h 45m
2026-07-12 AAL2279 - Jul 12, 18:20 UTCJul 12, 19:45 UTC1h 25m
2026-07-12 AAL2279 - Jul 12, 15:25 UTCJul 12, 16:50 UTC1h 25m
2026-07-12 AAL3217 - Jul 12, 12:10 UTCJul 12, 13:05 UTC55m
2026-07-12 AAL3226 - Jul 12, 03:50 UTCJul 12, 04:45 UTC55m
2026-07-12 AAL3226 CLT → CMH Jul 12, 03:46 UTCJul 12, 04:39 UTC53m
2026-07-11 AAL1735 - Jul 11, 23:35 UTCJul 12, 02:15 UTC2h 40m
2026-07-11 AAL1735 - Jul 11, 18:50 UTCJul 11, 21:50 UTC3h 0m
2026-07-11 AAL2073 - Jul 11, 16:05 UTCJul 11, 17:20 UTC1h 15m
2026-07-11 AAL2073 MCO → CLT Jul 11, 16:02 UTCJul 11, 17:21 UTC1h 19m
2026-07-11 AAL2119 - Jul 11, 12:35 UTCJul 11, 15:00 UTC2h 25m
2026-07-11 AAL2458 - Jul 11, 02:35 UTCJul 11, 05:05 UTC2h 30m
2026-07-10 AAL2458 DFW → SAN Jul 10, 22:55 UTCJul 11, 01:25 UTC2h 30m
2026-07-10 AAL909 BOS → DFW Jul 10, 17:58 UTCJul 10, 21:30 UTC3h 32m
2026-07-10 AAL909 BOS → DFW Jul 10, 18:00 UTCJul 10, 21:30 UTC3h 30m
2026-07-10 AAL1206 DFW → BOS Jul 10, 13:20 UTCJul 10, 16:45 UTC3h 25m
2026-07-10 AAL2603 PHX → DFW Jul 10, 03:40 UTCJul 10, 05:35 UTC1h 55m
2026-07-09 AAL3033 - Jul 9, 22:10 UTCJul 10, 02:00 UTC3h 50m
2026-07-09 AAL2396 - Jul 9, 16:00 UTCJul 9, 21:00 UTC5h 0m
2026-07-09 AAL3164 PHL → LAX Jul 9, 00:50 UTCJul 9, 05:45 UTC4h 55m
2026-07-09 AAL3164 PHL → LAX Jul 9, 00:55 UTCJul 9, 05:41 UTC4h 46m
2026-07-09 AAL3164 PHL → PHL Jul 9, 00:30 UTCJul 9, 00:35 UTC5m
2026-07-08 AAL2065 - Jul 8, 20:45 UTCJul 8, 23:00 UTC2h 15m
2026-07-08 AAL2065 - Jul 8, 17:50 UTCJul 8, 19:45 UTC1h 55m
2026-07-08 AAL2065 PHL → PHL Jul 8, 17:05 UTCJul 8, 17:10 UTC5m
2026-07-08 AAL2065 PHL → PHL Jul 8, 16:50 UTCJul 8, 16:55 UTC5m
2026-07-08 AAL1511 MIA → SDQ Jul 8, 12:05 UTCJul 8, 16:20 UTC4h 15m
2026-07-08 AAL2786 ORD → PHX Jul 8, 04:20 UTCJul 8, 07:15 UTC2h 55m
2026-07-08 AAL2488 - Jul 8, 00:45 UTCJul 8, 02:15 UTC1h 30m
2026-07-08 AAL2488 CLT → ORD Jul 8, 00:41 UTCJul 8, 02:09 UTC1h 28m
2026-07-07 AAL2170 - Jul 7, 20:20 UTCJul 7, 21:40 UTC1h 20m
2026-07-07 AAL2170 MSY → CLT Jul 7, 20:18 UTCJul 7, 21:41 UTC1h 23m
2026-07-07 AAL2170 - Jul 7, 17:10 UTCJul 7, 18:35 UTC1h 25m
2026-07-07 AAL2310 - Jul 7, 14:45 UTCJul 7, 15:40 UTC55m
2026-07-07 AAL2310 - Jul 7, 12:20 UTCJul 7, 13:15 UTC55m
2026-07-07 AAL849 - Jul 7, 06:50 UTCJul 7, 10:25 UTC3h 35m
2026-07-07 AAL2329 - Jul 7, 01:15 UTCJul 7, 04:55 UTC3h 40m
2026-07-06 AAL2777 - Jul 6, 21:45 UTCJul 6, 23:10 UTC1h 25m

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 N580UW page for operator, model, and routing details .

Mode-S A777BF frequently asked

What is Mode-S code A777BF?
A777BF is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N580UW.
Where is Mode-S A777BF registered?
Mode-S code A777BF 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 A777BF broadcasting right now?
Yes. Mode-S A777BF is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A777BF, octal 51673677, decimal 10,975,167.
What flights does A777BF operate?
Mode-S A777BF has broadcast 20 distinct callsigns, including AAL2642, AAL605, AAL2742, AAL2069, AAL2003.