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 Jul 26, 21:30 UTC
Flights observed
471
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:30 UTC

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 9 2026-07-25
AAL913 American Airlines 7 2026-07-25
AAL2644 American Airlines 7 2026-06-12
AAL2164 - 7 2026-07-17
AAL1129 - 6 2026-07-16
AAL915 - 5 2026-07-02
AAL658 American Airlines 5 2026-07-18
AAL2688 American Airlines 5 2026-07-21
AAL2398 American Airlines 5 2026-05-15
AAL2372 - 5 2026-07-21
AAL1863 American Airlines 5 2026-05-18
AAL1130 American Airlines 5 2026-07-02
AAL952 American Airlines 4 2026-06-05
AAL369 - 4 2026-07-16
AAL3210 American Airlines 4 2026-07-19
AAL3165 - 4 2026-06-27
AAL2968 American Airlines 4 2026-04-20
AAL2738 - 4 2026-07-02
AAL2668 - 4 2026-07-10
AAL2646 American Airlines 4 2026-07-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AAL1639 CLT → LGA Jul 26, 19:00 UTCJul 26, 21:30 UTC2h 30m
2026-07-26 AAL518 SAN → ORD Jul 26, 13:35 UTCJul 26, 17:15 UTC3h 40m
2026-07-26 AAL2463 SNA → PHX Jul 26, 01:20 UTCJul 26, 05:50 UTC4h 30m
2026-07-25 AAL916 BOG → MIA Jul 25, 19:45 UTCJul 25, 23:10 UTC3h 25m
2026-07-25 AAL916 BOG → MIA Jul 25, 19:50 UTCJul 25, 23:15 UTC3h 25m
2026-07-25 AAL913 MIA → BOG Jul 25, 15:10 UTCJul 25, 18:10 UTC3h 0m
2026-07-25 AAL401 PHL → CLT Jul 25, 10:10 UTCJul 25, 12:10 UTC2h 0m
2026-07-24 AAL1092 AUS → JFK Jul 24, 21:55 UTCJul 25, 01:54 UTC3h 59m
2026-07-24 AAL1092 AUS → JFK Jul 24, 21:55 UTCJul 25, 01:55 UTC4h 0m
2026-07-23 AAL2685 RDU → PHL Jul 23, 02:40 UTCJul 23, 03:40 UTC1h 0m
2026-07-23 AAL2685 RDU → PHL Jul 23, 00:35 UTCJul 23, 01:25 UTC50m
2026-07-22 AAL2646 CLT → EWR Jul 22, 21:20 UTCJul 22, 22:15 UTC55m
2026-07-22 AAL2646 CLT → EWR Jul 22, 20:37 UTCJul 22, 22:14 UTC1h 37m
2026-07-22 AAL2646 CLT → EWR Jul 22, 17:25 UTCJul 22, 18:20 UTC55m
2026-07-22 AAL2646 CLT → EWR Jul 22, 17:21 UTCJul 22, 19:02 UTC1h 41m
2026-07-22 AAL1741 - Jul 22, 13:10 UTCJul 22, 14:30 UTC1h 20m
2026-07-22 AAL1273 PHX → BOS Jul 22, 04:30 UTCJul 22, 05:25 UTC55m
2026-07-21 AAL688R SNA → DFW Jul 21, 23:45 UTCJul 22, 02:20 UTC2h 35m
2026-07-21 AAL688R SNA → DFW Jul 21, 23:41 UTCJul 22, 02:19 UTC2h 38m
2026-07-21 AAL2688 RDU → CLT Jul 21, 19:50 UTCJul 21, 22:25 UTC2h 35m
2026-07-21 AAL2688 RDU → CLT Jul 21, 19:49 UTCJul 21, 22:22 UTC2h 33m
2026-07-21 AAL2372 - Jul 21, 15:55 UTCJul 21, 18:35 UTC2h 40m
2026-07-20 AAL519 BGI → CLT Jul 20, 23:10 UTCJul 21, 02:45 UTC3h 35m
2026-07-20 AAL3321 - Jul 20, 19:20 UTCJul 20, 21:15 UTC1h 55m
2026-07-20 AAL1289 JFK → JFK Jul 20, 11:20 UTCJul 20, 17:45 UTC6h 25m
2026-07-19 AAL1409 AUS → JFK Jul 19, 23:15 UTCJul 20, 03:00 UTC3h 45m
2026-07-19 AAL1409 JFK → AUS Jul 19, 18:35 UTCJul 19, 21:55 UTC3h 20m
2026-07-19 AAL1289 - Jul 19, 15:35 UTCJul 19, 16:45 UTC1h 10m
2026-07-19 AAL3210 PHX → ELP Jul 19, 11:20 UTCJul 19, 12:05 UTC45m
2026-07-19 AAL3210 PHX → ELP Jul 19, 11:20 UTCJul 19, 13:04 UTC1h 44m
2026-07-18 AAL1359 ORD → PHL Jul 18, 17:50 UTCJul 19, 01:30 UTC7h 40m
2026-07-18 AAL658 LGA → DFW Jul 18, 12:15 UTCJul 18, 15:35 UTC3h 20m
2026-07-18 AAL658 LGA → DFW Jul 18, 11:08 UTCJul 18, 15:32 UTC4h 24m
2026-07-18 AAL1869 PHX → CLT Jul 18, 02:09 UTCJul 18, 03:55 UTC1h 46m
2026-07-18 AAL1869 PHX → CLT Jul 18, 02:07 UTCJul 18, 05:51 UTC3h 44m
2026-07-17 AAL3118 DEN → MIA Jul 17, 18:44 UTCJul 17, 22:45 UTC4h 0m
2026-07-17 AAL1739 - Jul 17, 13:35 UTCJul 17, 17:05 UTC3h 30m
2026-07-17 AAL1739 MIA → DEN Jul 17, 13:30 UTCJul 17, 17:05 UTC3h 35m
2026-07-17 AAL2164 - Jul 17, 08:04 UTCJul 17, 08:35 UTC30m
2026-07-17 AAL2164 - Jul 17, 05:45 UTCJul 17, 05:55 UTC10m
2026-07-16 AAL1129 - Jul 16, 22:25 UTCJul 16, 22:40 UTC15m
2026-07-16 AAL1129 MIA → MDE Jul 16, 22:21 UTCJul 17, 01:23 UTC3h 2m
2026-07-16 AAL369 - Jul 16, 14:50 UTCJul 16, 20:00 UTC5h 10m
2026-07-16 AAL2799 - Jul 16, 00:05 UTCJul 16, 05:25 UTC5h 20m
2026-07-15 AAL2231 - Jul 15, 21:10 UTCJul 15, 22:40 UTC1h 30m
2026-07-15 AAL2231 CLT → MIA Jul 15, 21:05 UTCJul 15, 22:39 UTC1h 34m
2026-07-15 AAL1877 - Jul 15, 18:10 UTCJul 15, 19:40 UTC1h 30m
2026-07-15 AAL1877 - Jul 15, 15:10 UTCJul 15, 16:40 UTC1h 30m
2026-07-14 AAL828 - Jul 14, 18:55 UTCJul 14, 22:10 UTC3h 15m
2026-07-14 AAL829 - Jul 14, 14:05 UTCJul 14, 17:25 UTC3h 20m

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 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 A3C649, octal 50743111, decimal 10,733,129.
What flights does A3C649 operate?
Mode-S A3C649 has broadcast 20 distinct callsigns, including AAL916, AAL913, AAL2644, AAL2164, AAL1129.