Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A7D665

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N604CZ · EMBRAER ERJ-170-200 (long wing) · operated by DELTA AIR LINES INC

Hex
A7D665
Octal
51753145
Decimal
10,999,397
Country
US
Tail
N604CZ
Type
E75L
No current signal · last broadcast 11d ago
Flights observed
476
Distinct callsigns
20
Country
US
Last broadcast
11d ago

Last known position

Most recent position reported by Mode-S A7D665.

Country allocation

The ICAO 24-bit address A7D665 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
SKW4068 SkyWest Airlines 8 2026-06-01
SKW3699 - 8 2026-06-29
SKW4153 SkyWest Airlines 7 2026-06-01
SKW3804 - 7 2026-06-15
SKW3902 SkyWest Airlines 6 2026-05-20
SKW3828 - 6 2026-06-21
SKW3685 SkyWest Airlines 6 2026-05-16
SKW4462 SkyWest Airlines 5 2026-06-29
SKW4141 - 5 2026-06-19
SKW4070 SkyWest Airlines 5 2026-05-17
SKW4063 SkyWest Airlines 5 2026-04-18
SKW3967 SkyWest Airlines 5 2026-06-11
SKW3896 SkyWest Airlines 5 2026-06-05
SKW3876 SkyWest Airlines 5 2026-04-29
SKW3841 SkyWest Airlines 5 2026-06-06
SKW3785 SkyWest Airlines 5 2026-05-07
SKW3561 SkyWest Airlines 5 2026-07-01
SKW4609 SkyWest Airlines 4 2026-06-11
SKW4177 SkyWest Airlines 4 2026-04-24
SKW4144 SkyWest Airlines 4 2026-04-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-02 SKW4608 MSP → BNA Jul 2, 20:05 UTCJul 2, 22:00 UTC1h 55m
2026-07-02 SKW3844 OKC → MSP Jul 2, 15:10 UTCJul 2, 16:55 UTC1h 45m
2026-07-01 SKW3791 MSP → OKC Jul 1, 23:40 UTCJul 2, 01:25 UTC1h 45m
2026-07-01 SKW3686 - Jul 1, 21:30 UTCJul 1, 22:00 UTC30m
2026-07-01 SKW3686 - Jul 1, 19:30 UTCJul 1, 19:55 UTC25m
2026-07-01 SKW3561 BOI → SEA Jul 1, 16:15 UTCJul 1, 16:50 UTC35m
2026-07-01 SKW3561 BOI → SEA Jul 1, 14:35 UTCJul 1, 15:25 UTC50m
2026-07-01 SKW3899 - Jul 1, 11:10 UTCJul 1, 13:25 UTC2h 15m
2026-07-01 SKW4035 MSP → MEM Jul 1, 01:20 UTCJul 1, 03:00 UTC1h 40m
2026-06-30 SKW4012 - Jun 30, 22:25 UTCJun 30, 23:50 UTC1h 25m
2026-06-30 SKW4012 MSP → XNA Jun 30, 19:45 UTCJun 30, 21:15 UTC1h 30m
2026-06-30 SKW3536 RST → MSP Jun 30, 17:05 UTCJun 30, 18:25 UTC1h 20m
2026-06-30 SKW3536 RST → MSP Jun 30, 14:35 UTCJun 30, 16:05 UTC1h 30m
2026-06-30 SKW3899 - Jun 30, 11:10 UTCJun 30, 13:05 UTC1h 55m
2026-06-30 SKW4035 - Jun 30, 01:19 UTCJun 30, 03:00 UTC1h 41m
2026-06-29 SKW4005 YWG → MSP Jun 29, 22:44 UTCJun 29, 23:49 UTC1h 5m
2026-06-29 SKW182J MSP → YWG Jun 29, 20:30 UTCJun 29, 21:34 UTC1h 5m
2026-06-29 SKW3699 IAD → MSP Jun 29, 15:54 UTCJun 29, 18:10 UTC2h 15m
2026-06-29 SKW3699 MSP → IAD Jun 29, 12:39 UTCJun 29, 14:39 UTC2h 0m
2026-06-29 SKW3914 SEA → SMF Jun 29, 10:20 UTCJun 29, 11:10 UTC50m
2026-06-29 SKW3834 GTF → MSP Jun 29, 03:10 UTCJun 29, 04:00 UTC50m
2026-06-29 SKW4462 MSP → MKE Jun 29, 00:14 UTCJun 29, 01:10 UTC55m
2026-06-28 SKW4462 MSP → MKE Jun 28, 22:10 UTCJun 28, 22:55 UTC45m
2026-06-28 SKW4032 - Jun 28, 19:55 UTCJun 28, 20:45 UTC50m
2026-06-28 SKW4032 MSP → MSN Jun 28, 18:25 UTCJun 28, 18:59 UTC35m
2026-06-28 SKW4458 SEA → SUN Jun 28, 14:39 UTCJun 28, 15:24 UTC45m
2026-06-28 SKW4458 SEA → SUN Jun 28, 13:29 UTCJun 28, 15:14 UTC1h 45m
2026-06-28 SKW4458 SEA → SUN Jun 28, 13:28 UTCJun 28, 14:21 UTC53m
2026-06-28 SKW4468 GSO → DTW Jun 28, 01:34 UTCJun 28, 02:25 UTC50m
2026-06-27 SKW3526 YWG → MSP Jun 27, 21:19 UTCJun 27, 22:20 UTC1h 0m
2026-06-27 SKW192E MSP → YWG Jun 27, 18:54 UTCJun 27, 20:04 UTC1h 10m
2026-06-27 SKW3813 AUS → MSP Jun 27, 14:54 UTCJun 27, 17:29 UTC2h 35m
2026-06-27 SKW4015 - Jun 27, 11:35 UTCJun 27, 13:49 UTC2h 15m
2026-06-27 SKW3731 AUS → IND Jun 27, 00:29 UTCJun 27, 02:39 UTC2h 10m
2026-06-26 SKW4016 MSY → AUS Jun 26, 21:04 UTCJun 26, 22:14 UTC1h 10m
2026-06-26 SKW4016 MSY → AUS Jun 26, 21:01 UTCJun 26, 22:13 UTC1h 12m
2026-06-26 SKW141E AUS → MSY Jun 26, 18:39 UTCJun 26, 19:55 UTC1h 15m
2026-06-26 SKW4015 - Jun 26, 11:30 UTCJun 26, 13:40 UTC2h 10m
2026-06-26 SKW3731 AUS → IND Jun 26, 00:35 UTCJun 26, 02:40 UTC2h 5m
2026-06-25 SKW4016 MSY → AUS Jun 25, 21:25 UTCJun 25, 22:34 UTC1h 10m
2026-06-25 SKW141E AUS → MSY Jun 25, 18:55 UTCJun 25, 20:05 UTC1h 10m
2026-06-25 SKW3650 FAR → MSP Jun 25, 15:10 UTCJun 25, 16:45 UTC1h 35m
2026-06-25 SKW3650 FAR → MSP Jun 25, 12:25 UTCJun 25, 14:04 UTC1h 40m
2026-06-25 SKW3669 DEN → AUS Jun 25, 02:49 UTCJun 25, 04:35 UTC1h 45m
2026-06-24 SKW3669 AUS → DEN Jun 24, 23:50 UTCJun 25, 01:44 UTC1h 55m
2026-06-24 SKW4028 - Jun 24, 18:39 UTCJun 24, 21:04 UTC2h 25m
2026-06-24 SKW4028 AUS → CMH Jun 24, 15:05 UTCJun 24, 17:29 UTC2h 25m
2026-06-24 SKW4088 - Jun 24, 12:50 UTCJun 24, 14:09 UTC1h 20m
2026-06-24 SKW3952 - Jun 24, 00:40 UTCJun 24, 01:55 UTC1h 15m
2026-06-23 SKW4053 ATL → EVV Jun 23, 22:34 UTCJun 23, 23:24 UTC50m

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 N604CZ page for operator, model, and routing details .

Mode-S A7D665 frequently asked

What is Mode-S code A7D665?
A7D665 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N604CZ.
Where is Mode-S A7D665 registered?
Mode-S code A7D665 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 A7D665 broadcasting right now?
No active broadcast right now. Last signal was 11d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A7D665, octal 51753145, decimal 10,999,397.
What flights does A7D665 operate?
Mode-S A7D665 has broadcast 20 distinct callsigns, including SKW4068, SKW3699, SKW4153, SKW3804, SKW3902.