Apparatus

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sensors Mode-S transponder

A3FCD6

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N356TX · operated by AMERICAN AIRLINES INC

Hex
A3FCD6
Octal
50776326
Decimal
10,747,094
Country
US
Tail
N356TX
Type
B38M
No current signal · last broadcast Jul 26, 21:30 UTC
Flights observed
508
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:30 UTC

Last known position

Most recent position reported by Mode-S A3FCD6.

Country allocation

The ICAO 24-bit address A3FCD6 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
AAL3058 - 7 2026-06-28
AAL829 American Airlines 6 2026-06-26
AAL828 - 6 2026-06-26
AAL448 - 6 2026-07-10
AAL3316 - 6 2026-06-24
AAL2049 American Airlines 6 2026-04-18
AAL1289 - 6 2026-07-17
AAL920 - 5 2026-06-15
AAL3210 - 5 2026-07-17
AAL2510 American Airlines 5 2026-07-20
AAL2505 - 5 2026-06-27
AAL2399 - 5 2026-07-18
AAL916 American Airlines 4 2026-07-24
AAL766 - 4 2026-06-22
AAL519 - 4 2026-07-17
AAL3321 - 4 2026-07-17
AAL3171 - 4 2026-06-25
AAL2968 American Airlines 4 2026-05-14
AAL2912 American Airlines 4 2026-05-19
AAL2738 American Airlines 4 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL1617 TUS → ORD Jul 26, 20:10 UTCJul 26, 21:30 UTC1h 20m
2026-07-26 AAL1617 TUS → ORD Jul 26, 16:15 UTCJul 26, 18:50 UTC2h 35m
2026-07-26 AAL1780 EGE → JFK Jul 26, 12:20 UTCJul 26, 14:30 UTC2h 10m
2026-07-26 AAL3076 UVF → JFK Jul 26, 03:00 UTCJul 26, 07:15 UTC4h 16m
2026-07-26 AAL3076 UVF → JFK Jul 26, 02:57 UTCJul 26, 07:15 UTC4h 18m
2026-07-25 AAL2738 PHL → SLC Jul 25, 21:30 UTCJul 25, 23:50 UTC2h 20m
2026-07-25 AAL2738 PHL → SLC Jul 25, 21:24 UTCJul 25, 23:44 UTC2h 20m
2026-07-25 AAL2738 PHL → SLC Jul 25, 20:05 UTCJul 25, 20:25 UTC20m
2026-07-25 AAL2738 PHL → SLC Jul 25, 18:10 UTCJul 25, 18:30 UTC20m
2026-07-25 AAL932 UIO → MIA Jul 25, 13:10 UTCJul 25, 15:30 UTC2h 20m
2026-07-25 AAL2259 BOS → CLT Jul 25, 01:05 UTCJul 25, 02:50 UTC1h 45m
2026-07-25 AAL2259 BOS → CLT Jul 25, 01:04 UTCJul 25, 04:47 UTC3h 43m
2026-07-24 AAL916 BOG → MIA Jul 24, 19:45 UTCJul 24, 22:50 UTC3h 5m
2026-07-24 AAL913 MIA → BOG Jul 24, 14:55 UTCJul 24, 15:15 UTC20m
2026-07-24 AAL913 MIA → BOG Jul 24, 14:54 UTCJul 24, 18:10 UTC3h 16m
2026-07-24 AAL1342 PHL → PHX Jul 24, 10:55 UTCJul 24, 13:00 UTC2h 5m
2026-07-24 AAL1342 PHL → PHX Jul 24, 10:50 UTCJul 24, 12:50 UTC2h 0m
2026-07-24 AAL1721 PWM → DCA Jul 24, 04:15 UTCJul 24, 06:05 UTC1h 50m
2026-07-24 AAL1721 PWM → DCA Jul 24, 04:11 UTCJul 24, 05:59 UTC1h 48m
2026-07-23 AAL654 LAS → DFW Jul 23, 20:20 UTCJul 24, 01:35 UTC5h 15m
2026-07-23 AAL654 LAS → DFW Jul 23, 13:00 UTCJul 23, 18:50 UTC5h 50m
2026-07-23 AAL654 LAS → DFW Jul 23, 12:57 UTCJul 23, 18:45 UTC5h 48m
2026-07-23 AAL2162 ORD → DSM Jul 23, 04:59 UTCJul 23, 08:49 UTC3h 50m
2026-07-22 AAL833 MIA → UIO Jul 22, 23:15 UTCJul 23, 08:50 UTC9h 35m
2026-07-22 AAL1260 DFW → CLE Jul 22, 18:43 UTCJul 22, 21:27 UTC2h 44m
2026-07-22 AAL1260 DFW → CLE Jul 22, 14:25 UTCJul 22, 21:35 UTC7h 10m
2026-07-22 AAL1047 IND → MIA Jul 22, 11:10 UTCJul 22, 12:45 UTC1h 35m
2026-07-22 AAL2230 MIA → IAH Jul 22, 02:35 UTCJul 22, 04:40 UTC2h 5m
2026-07-21 AAL2638 ORF → DFW Jul 21, 22:27 UTCJul 22, 00:38 UTC2h 11m
2026-07-21 AAL2638 ORF → DFW Jul 21, 18:40 UTCJul 22, 00:40 UTC6h 0m
2026-07-21 AAL3211 SAN → CLT Jul 21, 14:30 UTCJul 21, 17:00 UTC2h 30m
2026-07-21 AAL1083 PHX → AUS Jul 21, 11:10 UTCJul 21, 12:10 UTC1h 0m
2026-07-21 AAL1083 PHX → AUS Jul 21, 11:05 UTCJul 21, 12:09 UTC1h 4m
2026-07-21 AAL3178 LAS → CLT Jul 21, 02:15 UTCJul 21, 02:45 UTC30m
2026-07-21 AAL3178 LAS → CLT Jul 21, 02:11 UTCJul 21, 02:41 UTC30m
2026-07-20 AAL2626 SNA → DFW Jul 20, 19:23 UTCJul 20, 23:04 UTC3h 41m
2026-07-20 AAL2626 SNA → DFW Jul 20, 19:25 UTCJul 20, 23:00 UTC3h 35m
2026-07-20 AAL2626 SNA → DFW Jul 20, 13:15 UTCJul 20, 17:45 UTC4h 30m
2026-07-20 AAL2420 DFW → IAH Jul 20, 11:20 UTCJul 20, 11:50 UTC30m
2026-07-20 AAL2420 DFW → IAH Jul 20, 11:16 UTCJul 20, 11:47 UTC31m
2026-07-20 AAL2361 DEN → ORD Jul 20, 02:30 UTCJul 20, 04:55 UTC2h 25m
2026-07-20 AAL2361 DEN → ORD Jul 20, 02:28 UTCJul 20, 04:55 UTC2h 27m
2026-07-20 AAL2510 LGA → MIA Jul 20, 00:10 UTCJul 20, 01:10 UTC1h 0m
2026-07-19 AAL2510 LGA → MIA Jul 19, 20:15 UTCJul 19, 23:05 UTC2h 50m
2026-07-19 AAL2510 LGA → MIA Jul 19, 16:15 UTCJul 19, 18:55 UTC2h 40m
2026-07-19 AAL1515 BNA → DFW Jul 19, 13:20 UTCJul 19, 14:50 UTC1h 30m
2026-07-19 AAL1515 BNA → DFW Jul 19, 13:20 UTCJul 19, 14:47 UTC1h 27m
2026-07-19 AAL2750 MCO → PHX Jul 19, 03:15 UTCJul 19, 04:40 UTC1h 25m
2026-07-18 AAL2399 - Jul 18, 20:25 UTCJul 19, 01:40 UTC5h 15m
2026-07-18 AAL554 - Jul 18, 16:45 UTCJul 18, 18:50 UTC2h 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 N356TX page for operator, model, and routing details .

Mode-S A3FCD6 frequently asked

What is Mode-S code A3FCD6?
A3FCD6 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N356TX.
Where is Mode-S A3FCD6 registered?
Mode-S code A3FCD6 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 A3FCD6 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3FCD6, octal 50776326, decimal 10,747,094.
What flights does A3FCD6 operate?
Mode-S A3FCD6 has broadcast 20 distinct callsigns, including AAL3058, AAL829, AAL828, AAL448, AAL3316.