Apparatus

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sensors Mode-S transponder

A7D2AE

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N603CZ · EMBRAER ERJ-170-200 (long wing) · operated by DELTA AIR LINES INC

Hex
A7D2AE
Octal
51751256
Decimal
10,998,446
Country
US
Tail
N603CZ
Type
E75L
No current signal · last broadcast Jul 22, 19:45 UTC
Flights observed
635
Distinct callsigns
20
Country
US
Last broadcast
Jul 22, 19:45 UTC

Last known position

Most recent position reported by Mode-S A7D2AE.

Country allocation

The ICAO 24-bit address A7D2AE 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
SKW4134 SkyWest Airlines 15 2026-06-01
SKW4101 SkyWest Airlines 11 2026-06-13
SKW3874 - 11 2026-07-15
SKW3767 SkyWest Airlines 10 2026-06-11
SKW4089 - 9 2026-06-25
SKW3706 - 9 2026-07-15
SKW3953 - 8 2026-07-05
SKW3841 - 8 2026-07-13
SKW3699 - 8 2026-06-27
SKW3650 - 8 2026-07-18
SKW3996 - 7 2026-06-20
SKW3934 SkyWest Airlines 7 2026-06-01
SKW3876 - 7 2026-06-18
SKW3772 SkyWest Airlines 7 2026-07-20
SKW3669 - 7 2026-07-18
SKW107K SkyWest Airlines 7 2026-07-20
SKW4155 - 6 2026-07-05
SKW4129 - 6 2026-06-20
SKW4028 - 6 2026-07-19
SKW4012 - 6 2026-06-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-22 SKW3848 - Jul 22, 18:45 UTCJul 22, 19:40 UTC55m
2026-07-22 SKW4114 - Jul 22, 15:55 UTCJul 22, 17:30 UTC1h 35m
2026-07-22 SKW4114 SLC → OMA Jul 22, 15:51 UTCJul 22, 17:40 UTC1h 49m
2026-07-22 SKW3856 - Jul 22, 02:25 UTCJul 22, 03:50 UTC1h 25m
2026-07-21 SKW3856 - Jul 21, 23:45 UTCJul 22, 01:15 UTC1h 30m
2026-07-21 SKW3908 ATL → CRW Jul 21, 19:55 UTCJul 21, 22:30 UTC2h 35m
2026-07-21 SKW3960 BNA → AUS Jul 21, 16:30 UTCJul 21, 18:25 UTC1h 55m
2026-07-21 SKW3960 AUS → BNA Jul 21, 13:35 UTCJul 21, 15:25 UTC1h 50m
2026-07-21 SKW3577 GSP → DTW Jul 21, 01:00 UTCJul 21, 02:25 UTC1h 25m
2026-07-20 SKW3577 GSP → DTW Jul 20, 22:20 UTCJul 20, 23:50 UTC1h 30m
2026-07-20 SKW3772 SFO → SEA Jul 20, 18:45 UTCJul 20, 20:50 UTC2h 5m
2026-07-20 SKW107K AUS → JAX Jul 20, 15:20 UTCJul 20, 17:25 UTC2h 5m
2026-07-20 SKW4146 - Jul 20, 12:25 UTCJul 20, 14:15 UTC1h 50m
2026-07-20 SKW4163 AUS → BNA Jul 20, 02:05 UTCJul 20, 04:15 UTC2h 10m
2026-07-19 SKW4028 CMH → AUS Jul 19, 18:15 UTCJul 19, 20:35 UTC2h 20m
2026-07-19 SKW4028 AUS → CMH Jul 19, 14:30 UTCJul 19, 17:00 UTC2h 30m
2026-07-19 SKW4088 - Jul 19, 12:05 UTCJul 19, 13:30 UTC1h 25m
2026-07-19 SKW4088 MEM → AUS Jul 19, 11:59 UTCJul 19, 13:25 UTC1h 26m
2026-07-19 SKW3952 AUS → MEM Jul 19, 01:20 UTCJul 19, 02:45 UTC1h 25m
2026-07-18 SKW3612 OMA → DTW Jul 18, 21:50 UTCJul 19, 00:05 UTC2h 15m
2026-07-18 SKW3612 OMA → DTW Jul 18, 18:10 UTCJul 18, 20:35 UTC2h 25m
2026-07-18 SKW3650 - Jul 18, 15:10 UTCJul 18, 16:35 UTC1h 25m
2026-07-18 SKW3650 MCI → AUS Jul 18, 15:11 UTCJul 18, 16:33 UTC1h 22m
2026-07-18 SKW3650 - Jul 18, 12:30 UTCJul 18, 14:15 UTC1h 45m
2026-07-18 SKW3669 DEN → AUS Jul 18, 01:50 UTCJul 18, 03:30 UTC1h 41m
2026-07-17 SKW3669 AUS → DEN Jul 17, 22:15 UTCJul 18, 00:10 UTC1h 55m
2026-07-17 SKW4028 - Jul 17, 18:15 UTCJul 17, 20:35 UTC2h 20m
2026-07-17 SKW4028 AUS → CMH Jul 17, 14:55 UTCJul 17, 17:20 UTC2h 25m
2026-07-17 SKW4088 AWM → AUS Jul 17, 12:40 UTCJul 17, 14:00 UTC1h 20m
2026-07-17 SKW3952 AUS → MEM Jul 17, 01:20 UTCJul 17, 02:50 UTC1h 30m
2026-07-16 SKW4053 - Jul 16, 22:19 UTCJul 16, 23:20 UTC1h 0m
2026-07-16 SKW4053 - Jul 16, 20:15 UTCJul 16, 21:05 UTC50m
2026-07-16 SKW3747 PHX → AUS Jul 16, 16:57 UTCJul 16, 18:46 UTC1h 49m
2026-07-16 SKW3747 - Jul 16, 16:55 UTCJul 16, 18:50 UTC1h 55m
2026-07-16 SKW3747 AUS → PHX Jul 16, 13:45 UTCJul 16, 15:49 UTC2h 5m
2026-07-16 SKW3945 BNA → AUS Jul 16, 00:00 UTCJul 16, 01:50 UTC1h 50m
2026-07-15 SKW3945 AUS → BNA Jul 15, 21:10 UTCJul 15, 22:55 UTC1h 45m
2026-07-15 SKW3955 SLC → AUS Jul 15, 17:00 UTCJul 15, 19:45 UTC2h 45m
2026-07-15 SKW3874 - Jul 15, 13:25 UTCJul 15, 15:35 UTC2h 10m
2026-07-15 SKW3874 OMA → SLC Jul 15, 13:24 UTCJul 15, 15:23 UTC1h 59m
2026-07-15 SKW3706 - Jul 15, 02:55 UTCJul 15, 04:50 UTC1h 55m
2026-07-14 SKW3820 ABQ → SLC Jul 14, 22:50 UTCJul 15, 00:05 UTC1h 15m
2026-07-14 SKW3820 SLC → ABQ Jul 14, 20:15 UTCJul 14, 21:40 UTC1h 25m
2026-07-14 SKW3681 BUR → SLC Jul 14, 16:55 UTCJul 14, 18:25 UTC1h 30m
2026-07-14 SKW3681 SLC → BUR Jul 14, 14:10 UTCJul 14, 15:45 UTC1h 35m
2026-07-14 SKW3828 - Jul 14, 00:55 UTCJul 14, 02:05 UTC1h 10m
2026-07-13 SKW3828 - Jul 13, 22:45 UTCJul 13, 23:35 UTC50m
2026-07-13 SKW3841 SBA → SLC Jul 13, 19:50 UTCJul 13, 21:20 UTC1h 30m
2026-07-13 SKW3841 SLC → SBA Jul 13, 17:05 UTCJul 13, 18:55 UTC1h 50m
2026-07-13 SKW4006 - Jul 13, 13:10 UTCJul 13, 15:15 UTC2h 5m

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 N603CZ page for operator, model, and routing details .

Mode-S A7D2AE frequently asked

What is Mode-S code A7D2AE?
A7D2AE is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N603CZ.
Where is Mode-S A7D2AE registered?
Mode-S code A7D2AE 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 A7D2AE broadcasting right now?
No active broadcast right now. Last signal was Jul 22, 19:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A7D2AE, octal 51751256, decimal 10,998,446.
What flights does A7D2AE operate?
Mode-S A7D2AE has broadcast 20 distinct callsigns, including SKW4134, SKW4101, SKW3874, SKW3767, SKW4089.