Apparatus

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sensors Mode-S transponder

A3CDE4

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N344TS · BOEING 737 MAX 8 · operated by AMERICAN AIRLINES INC

Hex
A3CDE4
Octal
50746744
Decimal
10,735,076
Country
US
Tail
N344TS
Type
B38M
No current signal · last broadcast Jul 26, 23:00 UTC
Flights observed
479
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 23:00 UTC

Last known position

Most recent position reported by Mode-S A3CDE4.

Country allocation

The ICAO 24-bit address A3CDE4 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
AAL888 American Airlines 7 2026-04-15
AAL2908 American Airlines 7 2026-05-08
AAL2627 - 6 2026-06-15
AAL763 - 5 2026-07-02
AAL3262 American Airlines 5 2026-06-19
AAL3213 American Airlines 5 2026-04-16
AAL2880 American Airlines 5 2026-05-13
AAL2035 American Airlines 5 2026-07-23
AAL922 - 4 2026-07-08
AAL872 American Airlines 4 2026-04-15
AAL654 - 4 2026-07-12
AAL628 - 4 2026-07-11
AAL3165 American Airlines 4 2026-04-17
AAL2685 American Airlines 4 2026-07-01
AAL2672 American Airlines 4 2026-07-04
AAL2101 American Airlines 4 2026-04-14
AAL1782 American Airlines 4 2026-06-04
AAL1781 American Airlines 4 2026-05-05
AAL1019 American Airlines 4 2026-07-26
AAL913 - 3 2026-06-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL2868 DCA → LGA Jul 26, 21:25 UTCJul 26, 23:00 UTC1h 35m
2026-07-26 AAL3151 LAX → PIT Jul 26, 17:50 UTCJul 26, 19:00 UTC1h 10m
2026-07-26 AAL3151 LAX → PIT Jul 26, 17:50 UTCJul 26, 19:43 UTC1h 53m
2026-07-26 AAL1019 SJC → DFW Jul 26, 13:15 UTCJul 26, 16:25 UTC3h 10m
2026-07-26 AAL1197 MKE → CLT Jul 26, 04:03 UTCJul 26, 05:30 UTC1h 27m
2026-07-26 AAL1197 MKE → CLT Jul 26, 04:05 UTCJul 26, 05:35 UTC1h 30m
2026-07-25 AAL2624 JFK → CLT Jul 25, 21:10 UTCJul 26, 00:25 UTC3h 15m
2026-07-25 AAL319 PHL → CLT Jul 25, 16:25 UTCJul 25, 19:35 UTC3h 10m
2026-07-25 AAL1816 CMH → CLT Jul 25, 10:30 UTCJul 25, 15:00 UTC4h 30m
2026-07-24 AAL1823 PHX → IND Jul 24, 23:05 UTCJul 25, 01:50 UTC2h 45m
2026-07-24 AAL369 - Jul 24, 14:35 UTCJul 24, 19:45 UTC5h 10m
2026-07-23 AAL2035 MIA → SFO Jul 23, 23:10 UTCJul 24, 04:20 UTC5h 10m
2026-07-23 AAL1136 MIA → SXM Jul 23, 13:00 UTCJul 23, 21:20 UTC8h 20m
2026-07-23 AAL2996 - Jul 23, 06:35 UTCJul 23, 10:55 UTC4h 20m
2026-07-23 AAL1798 BUR → PHX Jul 23, 02:40 UTCJul 23, 05:15 UTC2h 35m
2026-07-22 AAL2979 PHL → MCO Jul 22, 20:00 UTCJul 23, 00:50 UTC4h 50m
2026-07-22 AAL2979 PHL → MCO Jul 22, 13:15 UTCJul 22, 18:00 UTC4h 45m
2026-07-21 AAL1760 PHX → AUS Jul 21, 20:10 UTCJul 21, 22:05 UTC1h 55m
2026-07-21 AAL3100 LGA → ORD Jul 21, 14:40 UTCJul 21, 17:05 UTC2h 25m
2026-07-20 AAL2086 SNA → ORD Jul 20, 22:20 UTCJul 21, 00:00 UTC1h 39m
2026-07-20 AAL831 ALB → CLT Jul 20, 17:00 UTCJul 20, 19:45 UTC2h 45m
2026-07-20 AAL831 ALB → CLT Jul 20, 16:36 UTCJul 20, 19:38 UTC3h 2m
2026-07-20 AAL831 ALB → CLT Jul 20, 12:05 UTCJul 20, 14:25 UTC2h 20m
2026-07-20 AAL1009 LAX → ORD Jul 20, 06:05 UTCJul 20, 09:50 UTC3h 45m
2026-07-19 AAL3283 LAX → DCA Jul 19, 22:40 UTCJul 20, 03:20 UTC4h 40m
2026-07-18 AAL591 SAN → PHL Jul 18, 20:40 UTCJul 19, 01:45 UTC5h 5m
2026-07-18 AAL1966 GUC → DFW Jul 18, 13:38 UTCJul 18, 18:16 UTC4h 38m
2026-07-18 AAL1966 GUC → DFW Jul 18, 13:40 UTCJul 18, 18:15 UTC4h 35m
2026-07-18 AAL1542 PHX → DCA Jul 18, 07:25 UTCJul 18, 11:20 UTC3h 55m
2026-07-18 AAL1968 HWO → PHX Jul 18, 02:00 UTCJul 18, 06:00 UTC4h 1m
2026-07-17 AAL505 - Jul 17, 20:25 UTCJul 17, 23:14 UTC2h 50m
2026-07-17 AAL2995 JFK → MEX Jul 17, 14:04 UTCJul 17, 18:15 UTC4h 10m
2026-07-17 AAL1727 - Jul 17, 01:45 UTCJul 17, 02:59 UTC1h 15m
2026-07-17 AAL1727 CLT → JFK Jul 17, 01:39 UTCJul 17, 03:01 UTC1h 22m
2026-07-16 AAL2911 - Jul 16, 21:55 UTCJul 16, 22:49 UTC55m
2026-07-16 AAL2911 CVG → CLT Jul 16, 21:50 UTCJul 16, 22:52 UTC1h 2m
2026-07-16 AAL1954 - Jul 16, 17:20 UTCJul 16, 20:35 UTC3h 15m
2026-07-16 AAL3143 MSP → PHX Jul 16, 13:00 UTCJul 16, 15:40 UTC2h 40m
2026-07-16 AAL3142 PHX → MSP Jul 16, 02:23 UTCJul 16, 05:07 UTC2h 44m
2026-07-16 AAL3142 - Jul 16, 02:25 UTCJul 16, 05:10 UTC2h 45m
2026-07-15 AAL2470 SAN → PHX Jul 15, 23:34 UTCJul 16, 00:27 UTC53m
2026-07-15 AAL2470 - Jul 15, 23:35 UTCJul 16, 00:30 UTC55m
2026-07-15 AAL2470 PHX → SAN Jul 15, 21:30 UTCJul 15, 22:20 UTC50m
2026-07-15 AAL377 BOS → PHX Jul 15, 15:09 UTCJul 15, 19:49 UTC4h 40m
2026-07-15 AAL377 BOS → PHX Jul 15, 15:10 UTCJul 15, 19:55 UTC4h 45m
2026-07-15 AAL9787 ORD → BOS Jul 15, 10:35 UTCJul 15, 12:25 UTC1h 50m
2026-07-15 AAL3243 - Jul 15, 06:45 UTCJul 15, 08:15 UTC1h 30m
2026-07-15 AAL3243 MDT → ORD Jul 15, 06:40 UTCJul 15, 08:11 UTC1h 31m
2026-07-15 AAL3243 - Jul 15, 04:20 UTCJul 15, 05:40 UTC1h 20m
2026-07-14 AAL2437 RSW → ORD Jul 14, 23:40 UTCJul 15, 02:05 UTC2h 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 N344TS page for operator, model, and routing details .

Mode-S A3CDE4 frequently asked

What is Mode-S code A3CDE4?
A3CDE4 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N344TS.
Where is Mode-S A3CDE4 registered?
Mode-S code A3CDE4 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 A3CDE4 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 23:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3CDE4, octal 50746744, decimal 10,735,076.
What flights does A3CDE4 operate?
Mode-S A3CDE4 has broadcast 20 distinct callsigns, including AAL888, AAL2908, AAL2627, AAL763, AAL3262.