Apparatus

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sensors Mode-S transponder

A3C94C

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N343JS · operated by AMERICAN AIRLINES INC

Hex
A3C94C
Octal
50744514
Decimal
10,733,900
Country
US
Tail
N343JS
No current signal · last broadcast Jul 26, 23:00 UTC
Flights observed
740
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 23:00 UTC

Last known position

Most recent position reported by Mode-S A3C94C.

Country allocation

The ICAO 24-bit address A3C94C 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
ENY4171 Envoy Air 9 2026-07-26
ENY3609 Envoy Air 8 2026-06-09
ENY4046 - 7 2026-06-20
ENY3542 - 7 2026-06-30
ENY3438 Envoy Air 7 2026-07-26
ENY3803 - 6 2026-07-13
ENY3554 Envoy Air 6 2026-07-21
ENY3526 - 6 2026-06-22
ENY3516 - 6 2026-07-06
ENY4173 Envoy Air 5 2026-05-30
ENY4074 Envoy Air 5 2026-06-12
ENY4004 Envoy Air 5 2026-06-11
ENY3994 - 5 2026-07-15
ENY3976 - 5 2026-06-18
ENY3969 - 5 2026-07-15
ENY3874 Envoy Air 5 2026-05-15
ENY3819 Envoy Air 5 2026-07-25
ENY3810 - 5 2026-07-04
ENY3809 Envoy Air 5 2026-05-14
ENY3768 - 5 2026-07-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ENY3438 DFW → HRL Jul 26, 21:30 UTCJul 26, 23:00 UTC1h 30m
2026-07-26 ENY3438 DFW → HRL Jul 26, 18:15 UTCJul 26, 20:10 UTC1h 55m
2026-07-26 ENY4171 ORD → CVG Jul 26, 16:00 UTCJul 26, 17:00 UTC1h 0m
2026-07-26 ENY4171 ORD → CVG Jul 26, 16:00 UTCJul 26, 17:00 UTC1h 0m
2026-07-26 ENY4171 ORD → CVG Jul 26, 14:05 UTCJul 26, 15:00 UTC55m
2026-07-26 ENY3807 CID → ORD Jul 26, 11:10 UTCJul 26, 12:55 UTC1h 45m
2026-07-26 ENY3807 CID → ORD Jul 26, 11:09 UTCJul 26, 12:50 UTC1h 41m
2026-07-26 ENY3690 ORD → CVG Jul 26, 00:40 UTCJul 26, 01:20 UTC40m
2026-07-26 ENY3690 ORD → CVG Jul 26, 00:36 UTCJul 26, 01:17 UTC41m
2026-07-25 ENY3819 MSY → AUS Jul 25, 21:20 UTCJul 25, 22:45 UTC1h 25m
2026-07-25 ENY3819 MSY → AUS Jul 25, 21:15 UTCJul 25, 22:51 UTC1h 36m
2026-07-25 ENY3819 MSY → AUS Jul 25, 18:55 UTCJul 25, 20:15 UTC1h 20m
2026-07-25 ENY3981 DCA → PNS Jul 25, 16:00 UTCJul 25, 17:25 UTC1h 25m
2026-07-25 ENY3981 DCA → PNS Jul 25, 13:35 UTCJul 25, 14:55 UTC1h 20m
2026-07-25 ENY3704 DFW → LRD Jul 25, 11:15 UTCJul 25, 11:55 UTC40m
2026-07-25 ENY3713 BOS → STL Jul 25, 03:55 UTCJul 25, 04:30 UTC35m
2026-07-25 ENY3713 BOS → STL Jul 25, 03:47 UTCJul 25, 04:26 UTC39m
2026-07-24 ENY4023 CLT → ORD Jul 24, 20:35 UTCJul 24, 21:00 UTC25m
2026-07-24 ENY4023 CLT → ORD Jul 24, 20:31 UTCJul 24, 22:33 UTC2h 2m
2026-07-24 ENY4023 CLT → ORD Jul 24, 17:40 UTCJul 24, 19:25 UTC1h 45m
2026-07-24 ENY3872 ORD → TVC Jul 24, 13:25 UTCJul 24, 15:55 UTC2h 30m
2026-07-24 ENY3872 ORD → TVC Jul 24, 13:09 UTCJul 24, 15:54 UTC2h 45m
2026-07-24 ENY3895 SGF → ORD Jul 24, 02:50 UTCJul 24, 05:20 UTC2h 30m
2026-07-24 ENY3717 ORD → PIT Jul 24, 00:10 UTCJul 24, 00:55 UTC45m
2026-07-24 ENY3717 ORD → PIT Jul 24, 00:09 UTCJul 24, 00:46 UTC37m
2026-07-23 ENY3717 ORD → PIT Jul 23, 23:00 UTCJul 23, 23:30 UTC30m
2026-07-23 ENY3908 BNA → ORD Jul 23, 19:25 UTCJul 23, 20:50 UTC1h 25m
2026-07-23 ENY3908 BNA → ORD Jul 23, 19:09 UTCJul 23, 20:50 UTC1h 41m
2026-07-23 ENY3891 CHS → ORD Jul 23, 16:15 UTCJul 23, 17:45 UTC1h 30m
2026-07-23 ENY3736 LSE → ORD Jul 23, 12:26 UTCJul 23, 14:20 UTC1h 54m
2026-07-23 ENY3736 LSE → ORD Jul 23, 02:15 UTCJul 23, 14:25 UTC12h 10m
2026-07-22 ENY3964 SAV → DFW Jul 22, 23:20 UTCJul 23, 00:15 UTC55m
2026-07-22 ENY3964 SAV → DFW Jul 22, 21:25 UTCJul 22, 22:15 UTC50m
2026-07-22 ENY4202 ORD → STL Jul 22, 18:35 UTCJul 22, 19:55 UTC1h 20m
2026-07-22 ENY4202 ORD → STL Jul 22, 16:20 UTCJul 22, 17:40 UTC1h 20m
2026-07-22 ENY3401 STS → DFW Jul 22, 13:55 UTCJul 22, 14:35 UTC40m
2026-07-22 ENY3401 STS → DFW Jul 22, 12:25 UTCJul 22, 13:05 UTC40m
2026-07-22 ENY3579 DOM → MIA Jul 22, 00:45 UTCJul 22, 02:10 UTC1h 25m
2026-07-21 ENY3579 DOM → MIA Jul 21, 22:25 UTCJul 21, 23:50 UTC1h 25m
2026-07-21 ENY3579 DOM → MIA Jul 21, 22:24 UTCJul 21, 23:49 UTC1h 25m
2026-07-21 ENY3554 CVG → MIA Jul 21, 18:35 UTCJul 21, 20:45 UTC2h 10m
2026-07-21 ENY3554 CVG → MIA Jul 21, 15:15 UTCJul 21, 17:20 UTC2h 5m
2026-07-21 ENY4290 MSY → MIA Jul 21, 12:35 UTCJul 21, 14:10 UTC1h 35m
2026-07-21 ENY4291 ORD → FCA Jul 21, 01:15 UTCJul 21, 02:55 UTC1h 40m
2026-07-20 ENY4145 - Jul 20, 23:15 UTCJul 21, 00:00 UTC44m
2026-07-20 ENY4145 - Jul 20, 21:25 UTCJul 20, 22:00 UTC35m
2026-07-20 ENY3451 DAB → DFW Jul 20, 16:40 UTCJul 20, 18:15 UTC1h 35m
2026-07-20 ENY3451 DAB → DFW Jul 20, 14:05 UTCJul 20, 15:45 UTC1h 40m
2026-07-20 ENY3601 GRR → MIA Jul 20, 11:10 UTCJul 20, 11:50 UTC40m
2026-07-20 ENY3601 GRR → MIA Jul 20, 11:10 UTCJul 20, 11:46 UTC36m

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 N343JS page for operator, model, and routing details .

Mode-S A3C94C frequently asked

What is Mode-S code A3C94C?
A3C94C is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N343JS.
Where is Mode-S A3C94C registered?
Mode-S code A3C94C 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 A3C94C 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 A3C94C, octal 50744514, decimal 10,733,900.
What flights does A3C94C operate?
Mode-S A3C94C has broadcast 20 distinct callsigns, including ENY4171, ENY3609, ENY4046, ENY3542, ENY3438.