Apparatus

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sensors Mode-S transponder

A13541

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N177XF · AIRBUS A-319 · operated by WILMINGTON TRUST CO TRUSTEE

Hex
A13541
Octal
50232501
Decimal
10,564,929
Country
US
Tail
N177XF
Type
A319
Broadcasting now · callsign AAL1368 · 34,000 ft
Flights observed
560
Distinct callsigns
20
Country
US
Last broadcast
1h ago

Current position

A13541 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address A13541 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
AAL2029 American Airlines 11 2026-05-14
AAL1867 - 9 2026-07-11
AAL3275 - 8 2026-06-30
AAL3243 American Airlines 8 2026-05-05
AAL3173 American Airlines 8 2026-04-18
AAL2625 American Airlines 8 2026-06-24
AAL2061 - 7 2026-07-14
AAL459 American Airlines 6 2026-06-14
AAL2683 American Airlines 6 2026-05-15
AAL2489 American Airlines 6 2026-06-08
AAL2424 American Airlines 6 2026-06-05
AAL2223 - 6 2026-06-23
AAL1826 American Airlines 6 2026-06-02
AAL1394 - 6 2026-07-13
AAL1163 American Airlines 6 2026-05-19
AAL853 - 5 2026-04-13
AAL3148 American Airlines 5 2026-05-05
AAL3147 - 5 2026-07-06
AAL3006 - 5 2026-06-22
AAL2952 American Airlines 5 2026-06-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AAL1590 ATL → PHL Jul 14, 23:00 UTCJul 15, 00:50 UTC1h 50m
2026-07-14 AAL2983 PHL → ATL Jul 14, 19:40 UTCJul 14, 21:25 UTC1h 45m
2026-07-14 AAL2720 STL → PHL Jul 14, 16:15 UTCJul 14, 18:10 UTC1h 55m
2026-07-14 AAL2720 - Jul 14, 13:15 UTCJul 14, 14:55 UTC1h 40m
2026-07-14 AAL2061 MSY → PHL Jul 14, 03:15 UTCJul 14, 05:35 UTC2h 20m
2026-07-13 AAL2061 - Jul 13, 23:35 UTCJul 14, 02:00 UTC2h 25m
2026-07-13 AAL2061 PHL → PHL Jul 13, 23:15 UTCJul 13, 23:25 UTC10m
2026-07-13 AAL2061 PHL → PHL Jul 13, 23:05 UTCJul 13, 23:10 UTC5m
2026-07-13 AAL2061 PHL → PHL Jul 13, 22:30 UTCJul 13, 22:40 UTC10m
2026-07-13 AAL1423 AUS → PHL Jul 13, 19:20 UTCJul 13, 22:24 UTC3h 4m
2026-07-13 AAL1423 AUS → PHL Jul 13, 19:20 UTCJul 13, 22:25 UTC3h 5m
2026-07-13 AAL1394 PHX → AUS Jul 13, 16:08 UTCJul 13, 18:12 UTC2h 4m
2026-07-13 AAL1394 - Jul 13, 16:10 UTCJul 13, 18:15 UTC2h 5m
2026-07-13 AAL2622 TUS → PHX Jul 13, 13:05 UTCJul 13, 13:30 UTC25m
2026-07-13 AAL2622 TUS → PHX Jul 13, 13:01 UTCJul 13, 13:30 UTC29m
2026-07-13 AAL2635 - Jul 13, 05:15 UTCJul 13, 05:45 UTC30m
2026-07-13 AAL2635 PHX → TUS Jul 13, 05:11 UTCJul 13, 05:43 UTC32m
2026-07-13 AAL2053 - Jul 13, 00:25 UTCJul 13, 02:20 UTC1h 55m
2026-07-12 AAL2497 - Jul 12, 19:40 UTCJul 12, 21:30 UTC1h 50m
2026-07-12 AAL2497 PHX → SAT Jul 12, 19:36 UTCJul 12, 21:28 UTC1h 52m
2026-07-12 AAL1668 - Jul 12, 17:15 UTCJul 12, 18:20 UTC1h 5m
2026-07-12 N177XF - Jul 12, 14:35 UTCJul 12, 15:30 UTC55m
2026-07-11 AAL2423 PHX → PHX Jul 11, 23:20 UTCJul 12, 02:20 UTC3h 0m
2026-07-11 AAL3181 AUS → PHX Jul 11, 19:40 UTCJul 11, 21:35 UTC1h 55m
2026-07-11 AAL1394 PHX → AUS Jul 11, 15:58 UTCJul 11, 18:00 UTC2h 2m
2026-07-11 AAL1394 PHX → AUS Jul 11, 16:00 UTCJul 11, 18:00 UTC2h 0m
2026-07-11 AAL1867 SMF → PHX Jul 11, 13:02 UTCJul 11, 14:35 UTC1h 33m
2026-07-11 AAL1867 SMF → PHX Jul 11, 13:05 UTCJul 11, 14:40 UTC1h 35m
2026-07-11 AAL2048 PHX → SMF Jul 11, 03:55 UTCJul 11, 05:25 UTC1h 30m
2026-07-10 AAL2191 - Jul 10, 23:30 UTCJul 11, 02:15 UTC2h 45m
2026-07-10 AAL2191 PHX → MSY Jul 10, 19:45 UTCJul 10, 22:35 UTC2h 50m
2026-07-10 AAL1405 - Jul 10, 16:55 UTCJul 10, 18:10 UTC1h 15m
2026-07-10 AAL1405 RNO → PHX Jul 10, 16:48 UTCJul 10, 18:09 UTC1h 21m
2026-07-10 AAL1405 - Jul 10, 14:35 UTCJul 10, 15:55 UTC1h 20m
2026-07-10 AAL2622 - Jul 10, 12:50 UTCJul 10, 13:15 UTC25m
2026-07-10 AAL2622 TUS → PHX Jul 10, 12:46 UTCJul 10, 13:15 UTC29m
2026-07-10 AAL2635 PHX → TUS Jul 10, 05:05 UTCJul 10, 05:30 UTC25m
2026-07-10 AAL2635 PHX → TUS Jul 10, 05:03 UTCJul 10, 05:29 UTC26m
2026-07-10 AAL1378 TUS → PHX Jul 10, 01:45 UTCJul 10, 02:10 UTC25m
2026-07-10 AAL1378 TUS → PHX Jul 10, 01:44 UTCJul 10, 02:12 UTC28m
2026-07-10 AAL1378 PHX → TUS Jul 10, 00:35 UTCJul 10, 01:00 UTC25m
2026-07-09 AAL3325 - Jul 9, 21:05 UTCJul 9, 22:40 UTC1h 35m
2026-07-09 AAL3325 PHX → SJC Jul 9, 18:40 UTCJul 9, 20:10 UTC1h 30m
2026-07-09 AAL2004 - Jul 9, 17:00 UTCJul 9, 17:50 UTC50m
2026-07-09 AAL2004 LAS → PHX Jul 9, 16:58 UTCJul 9, 17:45 UTC47m
2026-07-09 AAL2004 - Jul 9, 15:00 UTCJul 9, 15:45 UTC45m
2026-07-09 AAL2622 - Jul 9, 12:50 UTCJul 9, 13:15 UTC25m
2026-07-09 AAL2635 - Jul 9, 05:20 UTCJul 9, 05:40 UTC20m
2026-07-09 AAL2884 - Jul 9, 02:10 UTCJul 9, 03:30 UTC1h 20m
2026-07-09 AAL2884 MRY → PHX Jul 9, 02:07 UTCJul 9, 03:29 UTC1h 22m

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 N177XF page for operator, model, and routing details .

Mode-S A13541 frequently asked

What is Mode-S code A13541?
A13541 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N177XF.
Where is Mode-S A13541 registered?
Mode-S code A13541 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 A13541 broadcasting right now?
Yes. Mode-S A13541 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A13541, octal 50232501, decimal 10,564,929.
What flights does A13541 operate?
Mode-S A13541 has broadcast 20 distinct callsigns, including AAL2029, AAL1867, AAL3275, AAL3243, AAL3173.