Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

A7EF08

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N610CZ · EMBRAER ERJ-170-200 (long wing) · operated by DELTA AIR LINES INC

Hex
A7EF08
Octal
51767410
Decimal
11,005,704
Country
US
Tail
N610CZ
Type
E75L
No current signal · last broadcast Jul 26, 21:00 UTC
Flights observed
670
Distinct callsigns
20
Country
US
Last broadcast
Jul 26, 21:00 UTC

Last known position

Most recent position reported by Mode-S A7EF08.

Country allocation

The ICAO 24-bit address A7EF08 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
SKW3536 - 16 2026-07-14
SKW4012 - 14 2026-07-15
SKW3951 - 12 2026-07-07
SKW4028 SkyWest Airlines 10 2026-06-13
SKW3999 SkyWest Airlines 9 2026-07-25
SKW3824 SkyWest Airlines 9 2026-05-07
SKW4145 SkyWest Airlines 8 2026-07-23
SKW3750 SkyWest Airlines 8 2026-05-10
SKW4170 SkyWest Airlines 7 2026-04-26
SKW4119 - 7 2026-07-04
SKW4099 - 7 2026-07-05
SKW3902 SkyWest Airlines 7 2026-05-13
SKW3765 - 7 2026-07-22
SKW3693 SkyWest Airlines 7 2026-06-02
SKW4449 SkyWest Airlines 6 2026-06-01
SKW4127 SkyWest Airlines 6 2026-07-26
SKW4032 - 6 2026-06-25
SKW3937 SkyWest Airlines 6 2026-07-20
SKW3832 SkyWest Airlines 6 2026-04-30
SKW3767 - 6 2026-06-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 SKW3959 MSP → BIS Jul 26, 19:45 UTCJul 26, 21:00 UTC1h 15m
2026-07-26 SKW3695 ORD → BOS Jul 26, 15:45 UTCJul 26, 18:00 UTC2h 15m
2026-07-26 SKW3932 MSP → MOT Jul 26, 02:50 UTCJul 26, 05:20 UTC2h 30m
2026-07-26 SKW4127 MSP → PIT Jul 26, 00:10 UTCJul 26, 01:25 UTC1h 15m
2026-07-25 SKW4127 MSP → PIT Jul 25, 22:15 UTCJul 25, 23:10 UTC55m
2026-07-25 SKW3736 SJC → SEA Jul 25, 18:50 UTCJul 25, 20:25 UTC1h 35m
2026-07-25 SKW3736 SJC → SEA Jul 25, 15:45 UTCJul 25, 17:40 UTC1h 55m
2026-07-25 SKW4036 HPN → ATL Jul 25, 13:20 UTCJul 25, 14:10 UTC50m
2026-07-25 SKW4036 HPN → ATL Jul 25, 13:28 UTCJul 25, 14:04 UTC36m
2026-07-25 SKW4047 HPN → DTW Jul 25, 05:00 UTCJul 25, 05:50 UTC50m
2026-07-25 SKW3999 MSN → DTW Jul 25, 01:00 UTCJul 25, 03:15 UTC2h 15m
2026-07-25 SKW3999 MSN → DTW Jul 25, 00:56 UTCJul 25, 03:12 UTC2h 16m
2026-07-24 SKW3999 MSN → DTW Jul 24, 21:35 UTCJul 25, 00:05 UTC2h 30m
2026-07-24 SKW183T BOI → SEA Jul 24, 19:00 UTCJul 24, 20:05 UTC1h 5m
2026-07-24 SKW3678 BOS → CLE Jul 24, 16:25 UTCJul 24, 17:25 UTC1h 0m
2026-07-24 SKW4471 PDX → SEA Jul 24, 14:30 UTCJul 24, 15:05 UTC35m
2026-07-24 SKW4472 SEA → PDX Jul 24, 06:10 UTCJul 24, 06:40 UTC30m
2026-07-24 SKW3923 OAK → LAX Jul 24, 04:10 UTCJul 24, 04:45 UTC35m
2026-07-24 SKW3923 OAK → LAX Jul 24, 02:35 UTCJul 24, 03:05 UTC30m
2026-07-24 SKW4165 MSN → MSP Jul 24, 00:25 UTCJul 24, 01:05 UTC40m
2026-07-23 SKW4145 DTW → YUL Jul 23, 22:50 UTCJul 23, 23:35 UTC45m
2026-07-23 SKW4145 DTW → YUL Jul 23, 22:55 UTCJul 23, 23:30 UTC35m
2026-07-23 SKW3878 CLE → LGA Jul 23, 20:45 UTCJul 23, 21:45 UTC1h 0m
2026-07-23 SKW3806 LAX → OAK Jul 23, 18:15 UTCJul 23, 19:50 UTC1h 35m
2026-07-23 SKW4038 SEA → SJC Jul 23, 01:25 UTCJul 23, 02:25 UTC1h 0m
2026-07-22 SKW4615 SMF → SFO Jul 22, 23:30 UTCJul 23, 00:25 UTC55m
2026-07-22 SKW3765 - Jul 22, 21:40 UTCJul 22, 22:15 UTC35m
2026-07-22 SKW3765 - Jul 22, 19:50 UTCJul 22, 20:15 UTC25m
2026-07-22 SKW3777 HPN → ATL Jul 22, 04:50 UTCJul 22, 05:25 UTC35m
2026-07-22 SKW3777 HPN → ATL Jul 22, 04:46 UTCJul 22, 05:29 UTC43m
2026-07-22 SKW3777 HPN → ATL Jul 22, 01:05 UTCJul 22, 03:35 UTC2h 30m
2026-07-21 SKW3777 HPN → ATL Jul 21, 22:00 UTCJul 21, 23:30 UTC1h 30m
2026-07-21 SKW3833 - Jul 21, 19:25 UTCJul 21, 20:35 UTC1h 10m
2026-07-21 SKW3833 - Jul 21, 17:05 UTCJul 21, 18:05 UTC1h 0m
2026-07-21 SWM4029 - Jul 21, 13:45 UTCJul 21, 15:50 UTC2h 5m
2026-07-21 SKW3703 BOS → EWR Jul 21, 04:30 UTCJul 21, 06:25 UTC1h 55m
2026-07-20 SKW3820 ABQ → SLC Jul 20, 23:15 UTCJul 21, 00:30 UTC1h 14m
2026-07-20 SKW3820 SLC → ABQ Jul 20, 21:05 UTCJul 20, 22:20 UTC1h 15m
2026-07-20 SKW4444 GEG → SLC Jul 20, 17:00 UTCJul 20, 18:25 UTC1h 25m
2026-07-20 SKW4444 SLC → GEG Jul 20, 14:25 UTCJul 20, 15:50 UTC1h 25m
2026-07-20 SKW3937 SEA → MFR Jul 20, 03:00 UTCJul 20, 04:30 UTC1h 30m
2026-07-20 SKW3937 SEA → MFR Jul 20, 00:50 UTCJul 20, 02:15 UTC1h 25m
2026-07-19 SKW3765 - Jul 19, 21:50 UTCJul 19, 22:20 UTC30m
2026-07-19 SKW3765 IDA → SLC Jul 19, 21:47 UTCJul 19, 22:20 UTC33m
2026-07-19 SKW3765 - Jul 19, 20:05 UTCJul 19, 20:30 UTC25m
2026-07-19 SKW3681 BUR → SLC Jul 19, 17:50 UTCJul 19, 19:15 UTC1h 25m
2026-07-19 SKW3681 - Jul 19, 15:25 UTCJul 19, 16:55 UTC1h 30m
2026-07-19 SKW4230 - Jul 19, 14:00 UTCJul 19, 14:20 UTC20m
2026-07-19 SKW4234 SLC → GJT Jul 19, 03:02 UTCJul 19, 03:30 UTC28m
2026-07-19 SKW4234 - Jul 19, 02:55 UTCJul 19, 03:15 UTC20m

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 N610CZ page for operator, model, and routing details .

Mode-S A7EF08 frequently asked

What is Mode-S code A7EF08?
A7EF08 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N610CZ.
Where is Mode-S A7EF08 registered?
Mode-S code A7EF08 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 A7EF08 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 A7EF08, octal 51767410, decimal 11,005,704.
What flights does A7EF08 operate?
Mode-S A7EF08 has broadcast 20 distinct callsigns, including SKW3536, SKW4012, SKW3951, SKW4028, SKW3999.