Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A3C649

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N342RX · BOEING 737 MAX 8 · operated by BANK OF UTAH TRUSTEE

Hex
A3C649
Octal
50743111
Decimal
10,733,129
Country
US
Tail
N342RX
Type
B38M
No current signal · last broadcast 5h ago
Flights observed
420
Distinct callsigns
20
Country
US
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S A3C649.

Country allocation

The ICAO 24-bit address A3C649 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
AAL916 American Airlines 7 2026-05-31
AAL2644 American Airlines 7 2026-06-12
AAL913 American Airlines 6 2026-05-31
AAL915 - 5 2026-07-02
AAL2398 American Airlines 5 2026-05-15
AAL2164 - 5 2026-06-30
AAL1863 American Airlines 5 2026-05-18
AAL1130 American Airlines 5 2026-07-02
AAL952 American Airlines 4 2026-06-05
AAL3165 - 4 2026-06-27
AAL2968 American Airlines 4 2026-04-20
AAL2738 - 4 2026-07-02
AAL2668 - 4 2026-07-10
AAL2395 American Airlines 4 2026-04-23
AAL2372 - 4 2026-07-08
AAL1918 American Airlines 4 2026-06-05
AAL1900 - 4 2026-06-30
AAL1798 American Airlines 4 2026-06-08
AAL1272 American Airlines 4 2026-05-13
AAL1228 American Airlines 4 2026-05-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 AAL1359 - Jul 13, 17:20 UTCJul 14, 01:20 UTC8h 0m
2026-07-13 AAL658 - Jul 13, 03:05 UTCJul 13, 15:05 UTC12h 0m
2026-07-12 AAL3119 - Jul 12, 22:55 UTCJul 13, 01:25 UTC2h 30m
2026-07-12 AAL3119 EWR → MIA Jul 12, 22:53 UTCJul 13, 01:31 UTC2h 38m
2026-07-12 AAL1997 PHX → EWR Jul 12, 16:37 UTCJul 12, 21:00 UTC4h 23m
2026-07-12 AAL1997 PHX → EWR Jul 12, 16:40 UTCJul 12, 21:00 UTC4h 20m
2026-07-12 AAL1808 LAS → PHX Jul 12, 14:15 UTCJul 12, 15:01 UTC46m
2026-07-12 AAL1808 LAS → PHX Jul 12, 14:15 UTCJul 12, 15:05 UTC50m
2026-07-11 AAL2864 DFW → LAS Jul 11, 22:20 UTCJul 12, 00:35 UTC2h 15m
2026-07-11 AAL1653 BZN → DFW Jul 11, 17:50 UTCJul 11, 20:07 UTC2h 17m
2026-07-11 AAL1653 - Jul 11, 14:05 UTCJul 11, 20:10 UTC6h 5m
2026-07-11 AAL1959 - Jul 11, 11:20 UTCJul 11, 12:30 UTC1h 10m
2026-07-11 AAL1959 ELP → DFW Jul 11, 11:08 UTCJul 11, 12:32 UTC1h 24m
2026-07-10 AAL2034 - Jul 10, 23:45 UTCJul 11, 00:45 UTC1h 0m
2026-07-10 AAL2034 DFW → ELP Jul 10, 23:45 UTCJul 11, 00:58 UTC1h 13m
2026-07-10 AAL1845 - Jul 10, 20:10 UTCJul 10, 22:05 UTC1h 55m
2026-07-10 AAL1845 - Jul 10, 14:25 UTCJul 10, 16:25 UTC2h 0m
2026-07-10 AAL2668 - Jul 10, 01:35 UTCJul 10, 04:10 UTC2h 35m
2026-07-10 AAL2668 SNA → DFW Jul 10, 01:33 UTCJul 10, 04:04 UTC2h 31m
2026-07-09 AAL2668 - Jul 9, 21:45 UTCJul 10, 00:25 UTC2h 40m
2026-07-09 AAL2680 - Jul 9, 17:35 UTCJul 9, 20:20 UTC2h 45m
2026-07-09 AAL2680 - Jul 9, 13:35 UTCJul 9, 16:05 UTC2h 30m
2026-07-09 AAL688R SNA → DFW Jul 9, 00:25 UTCJul 9, 03:05 UTC2h 40m
2026-07-08 AAL2688 - Jul 8, 20:35 UTCJul 8, 23:05 UTC2h 30m
2026-07-08 AAL2372 - Jul 8, 15:05 UTCJul 8, 17:50 UTC2h 45m
2026-07-07 AAL519 - Jul 7, 22:30 UTCJul 8, 02:15 UTC3h 45m
2026-07-07 AAL3321 JFK → ORD Jul 7, 18:35 UTCJul 7, 20:45 UTC2h 10m
2026-07-07 AAL1289 BDA → JFK Jul 7, 15:30 UTCJul 7, 16:15 UTC45m
2026-07-07 AAL1289 BDA → JFK Jul 7, 14:24 UTCJul 7, 16:12 UTC1h 48m
2026-07-07 AAL3210 - Jul 7, 11:15 UTCJul 7, 12:00 UTC45m
2026-07-07 AAL3210 JFK → BDA Jul 7, 11:15 UTCJul 7, 13:05 UTC1h 50m
2026-07-06 AAL832 DCA → BOS Jul 6, 23:40 UTCJul 7, 04:10 UTC4h 30m
2026-07-06 AAL2829 JFK → PHX Jul 6, 17:23 UTCJul 6, 22:05 UTC4h 42m
2026-07-06 AAL2829 JFK → PHX Jul 6, 17:25 UTCJul 6, 22:05 UTC4h 40m
2026-07-05 AAL1421 BOS → PHL Jul 5, 23:00 UTCJul 6, 00:40 UTC1h 40m
2026-07-05 AAL2269 - Jul 5, 18:00 UTCJul 5, 20:45 UTC2h 45m
2026-07-05 AAL2269 PBI → ORD Jul 5, 17:56 UTCJul 5, 20:35 UTC2h 39m
2026-07-05 AAL2269 - Jul 5, 14:15 UTCJul 5, 16:45 UTC2h 30m
2026-07-05 AAL1421 BOS → PHL Jul 5, 02:10 UTCJul 5, 05:05 UTC2h 55m
2026-07-04 AAL40R LAS → ORD Jul 4, 16:00 UTCJul 4, 19:35 UTC3h 35m
2026-07-04 AAL40R LAS → ORD Jul 4, 15:58 UTCJul 4, 19:21 UTC3h 23m
2026-07-04 AAL2025 - Jul 4, 00:55 UTCJul 4, 05:35 UTC4h 40m
2026-07-03 AAL1479 - Jul 3, 21:10 UTCJul 3, 23:00 UTC1h 50m
2026-07-03 AAL1479 - Jul 3, 20:30 UTCJul 3, 21:05 UTC35m
2026-07-03 AAL636 - Jul 3, 14:10 UTCJul 3, 18:35 UTC4h 25m
2026-07-03 AAL1968 - Jul 3, 03:45 UTCJul 3, 07:50 UTC4h 5m
2026-07-03 AAL1968 MIA → PHX Jul 3, 03:41 UTCJul 3, 07:45 UTC4h 4m
2026-07-02 AAL2738 - Jul 2, 20:55 UTCJul 2, 23:15 UTC2h 20m
2026-07-02 AAL2738 STT → MIA Jul 2, 20:51 UTCJul 2, 23:13 UTC2h 22m
2026-07-02 AAL2738 - Jul 2, 19:20 UTCJul 2, 19:40 UTC20m

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 N342RX page for operator, model, and routing details .

Mode-S A3C649 frequently asked

What is Mode-S code A3C649?
A3C649 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N342RX.
Where is Mode-S A3C649 registered?
Mode-S code A3C649 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 A3C649 broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3C649, octal 50743111, decimal 10,733,129.
What flights does A3C649 operate?
Mode-S A3C649 has broadcast 20 distinct callsigns, including AAL916, AAL2644, AAL913, AAL915, AAL2398.