Apparatus

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sensors Mode-S transponder

A3A4ED

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N334CR · operated by AMERICAN AIRLINES INC

Hex
A3A4ED
Octal
50722355
Decimal
10,724,589
Country
US
Tail
N334CR
No current signal · last broadcast Jul 26, 21:00 UTC
Flights observed
745
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:00 UTC

Last known position

Most recent position reported by Mode-S A3A4ED.

Country allocation

The ICAO 24-bit address A3A4ED 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
ENY4104 - 9 2026-06-22
ENY3977 Envoy Air 8 2026-06-15
ENY4155 Envoy Air 7 2026-05-16
ENY3652 Envoy Air 7 2026-07-25
ENY3600 Envoy Air 7 2026-07-21
ENY3455 - 7 2026-07-02
ENY4110 Envoy Air 6 2026-06-01
ENY4101 - 6 2026-07-06
ENY3556 - 6 2026-06-28
ENY3454 Envoy Air 6 2026-06-30
ENY3439 - 6 2026-07-07
ENY3409 - 6 2026-07-07
ENY3361 Envoy Air 6 2026-07-21
ENY4176 - 5 2026-06-27
ENY4068 Envoy Air 5 2026-04-30
ENY4009 - 5 2026-06-22
ENY3981 - 5 2026-06-26
ENY3934 - 5 2026-06-27
ENY3930 - 5 2026-07-05
ENY3803 Envoy Air 5 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 ENY3400 GRR → ORD Jul 26, 20:20 UTCJul 26, 20:55 UTC35m
2026-07-26 ENY3661 DFW → SGF Jul 26, 17:25 UTCJul 26, 18:35 UTC1h 10m
2026-07-26 ENY3661 DFW → SGF Jul 26, 15:10 UTCJul 26, 16:20 UTC1h 10m
2026-07-26 ENY3370 BNA → TPA Jul 26, 11:50 UTCJul 26, 13:20 UTC1h 30m
2026-07-26 ENY4254 ATW → CLT Jul 26, 02:10 UTCJul 26, 03:50 UTC1h 40m
2026-07-26 ENY3803 DFW → MSY Jul 26, 00:05 UTCJul 26, 01:00 UTC55m
2026-07-26 ENY3803 DFW → MSY Jul 26, 00:01 UTCJul 26, 00:58 UTC57m
2026-07-25 ENY3803 DFW → MSY Jul 25, 21:50 UTCJul 25, 22:45 UTC55m
2026-07-25 ENY3652 ORD → MCI Jul 25, 19:55 UTCJul 25, 20:35 UTC40m
2026-07-25 ENY3652 ORD → MCI Jul 25, 19:40 UTCJul 25, 20:34 UTC54m
2026-07-25 ENY3652 ORD → MCI Jul 25, 17:40 UTCJul 25, 18:40 UTC1h 0m
2026-07-25 ENY3389 CVG → ORD Jul 25, 15:25 UTCJul 25, 16:10 UTC45m
2026-07-25 ENY3389 CVG → ORD Jul 25, 13:35 UTCJul 25, 14:15 UTC40m
2026-07-25 ENY3988 MSN → DCA Jul 25, 10:10 UTCJul 25, 10:50 UTC40m
2026-07-25 ENY4037 LRD → DFW Jul 25, 02:37 UTCJul 25, 04:45 UTC2h 8m
2026-07-25 ENY4037 LRD → DFW Jul 25, 02:40 UTCJul 25, 04:50 UTC2h 10m
2026-07-24 ENY4165 PHX → XNA Jul 24, 23:30 UTCJul 25, 01:00 UTC1h 30m
2026-07-24 ENY4165 PHX → XNA Jul 24, 21:15 UTCJul 24, 22:35 UTC1h 20m
2026-07-24 ENY4070 ORD → BMI Jul 24, 18:15 UTCJul 24, 20:00 UTC1h 45m
2026-07-24 ENY3766 - Jul 24, 15:15 UTCJul 24, 16:55 UTC1h 40m
2026-07-24 ENY3766 ORD → RAP Jul 24, 15:10 UTCJul 24, 17:04 UTC1h 54m
2026-07-24 ENY3590 RDU → DCA Jul 24, 11:50 UTCJul 24, 13:15 UTC1h 25m
2026-07-24 ENY4037 LRD → DFW Jul 24, 02:35 UTCJul 24, 04:45 UTC2h 10m
2026-07-24 ENY4204 DFW → CMH Jul 24, 00:10 UTCJul 24, 01:05 UTC55m
2026-07-23 ENY4204 DFW → CMH Jul 23, 22:25 UTCJul 23, 23:15 UTC50m
2026-07-23 ENY3720 MSN → CMH Jul 23, 19:50 UTCJul 23, 21:15 UTC1h 25m
2026-07-23 ENY3720 MSN → CMH Jul 23, 19:49 UTCJul 23, 21:20 UTC1h 31m
2026-07-23 ENY3720 MSN → CMH Jul 23, 17:35 UTCJul 23, 18:55 UTC1h 20m
2026-07-23 ENY4033 XNA → PHX Jul 23, 14:05 UTCJul 23, 16:25 UTC2h 20m
2026-07-23 ENY4033 XNA → PHX Jul 23, 14:04 UTCJul 23, 16:22 UTC2h 18m
2026-07-23 ENY4049 ORD → ABQ Jul 23, 01:40 UTCJul 23, 04:10 UTC2h 30m
2026-07-23 ENY4049 ORD → ABQ Jul 23, 01:39 UTCJul 23, 03:58 UTC2h 19m
2026-07-22 ENY3517 ATL → CLT Jul 22, 23:55 UTCJul 23, 00:20 UTC25m
2026-07-22 ENY3517 ATL → CLT Jul 22, 22:15 UTCJul 22, 22:35 UTC20m
2026-07-22 ENY4108 DFW → XNA Jul 22, 15:40 UTCJul 22, 15:55 UTC15m
2026-07-22 ENY4108 DFW → XNA Jul 22, 15:31 UTCJul 22, 15:34 UTC3m
2026-07-22 ENY4108 DFW → XNA Jul 22, 14:10 UTCJul 22, 14:20 UTC10m
2026-07-22 ENY3806 GSP → MIA Jul 22, 11:10 UTCJul 22, 12:10 UTC1h 0m
2026-07-22 ENY3435 ORD → RST Jul 22, 02:05 UTCJul 22, 03:25 UTC1h 20m
2026-07-22 ENY3435 ORD → RST Jul 22, 02:00 UTCJul 22, 03:29 UTC1h 29m
2026-07-21 ENY4085 MIA → MSN Jul 21, 22:30 UTCJul 22, 00:40 UTC2h 10m
2026-07-21 ENY3361 BNA → ORD Jul 21, 20:30 UTCJul 21, 21:20 UTC50m
2026-07-21 ENY3600 CMH → CLT Jul 21, 16:45 UTCJul 21, 18:50 UTC2h 5m
2026-07-21 ENY3600 CMH → CLT Jul 21, 13:35 UTCJul 21, 15:10 UTC1h 35m
2026-07-21 ENY4088 XNA → ORD Jul 21, 10:15 UTCJul 21, 11:35 UTC1h 20m
2026-07-21 ENY3960 CVG → ORD Jul 21, 04:00 UTCJul 21, 05:15 UTC1h 15m
2026-07-21 ENY3458 - Jul 21, 01:05 UTCJul 21, 02:10 UTC1h 5m
2026-07-20 ENY3458 - Jul 20, 23:30 UTCJul 21, 00:15 UTC44m
2026-07-20 ENY3711 BOS → ORD Jul 20, 18:45 UTCJul 20, 20:55 UTC2h 10m
2026-07-20 ENY3814 STL → BOS Jul 20, 15:10 UTCJul 20, 17:25 UTC2h 15m

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 N334CR page for operator, model, and routing details .

Mode-S A3A4ED frequently asked

What is Mode-S code A3A4ED?
A3A4ED is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N334CR.
Where is Mode-S A3A4ED registered?
Mode-S code A3A4ED 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 A3A4ED broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A3A4ED, octal 50722355, decimal 10,724,589.
What flights does A3A4ED operate?
Mode-S A3A4ED has broadcast 20 distinct callsigns, including ENY4104, ENY3977, ENY4155, ENY3652, ENY3600.