Apparatus

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sensors Mode-S transponder

600840

ICAO 24-bit transponder address · allocated to Azerbaijan

Currently assigned to 4K-AZ64 · EMBRAER ERJ-190-100

Hex
600840
Octal
30004100
Decimal
6,293,568
Country
AZ
Tail
4K-AZ64
Type
E190
No current signal · last broadcast 7h ago
Flights observed
171
Distinct callsigns
20
Country
AZ
Last broadcast
7h ago

Last known position

Most recent position reported by Mode-S 600840.

Country allocation

The ICAO 24-bit address 600840 falls within the block assigned to Azerbaijan (AZ) by ICAO Annex 10, Volume III. Every aircraft registered in Azerbaijan 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
AHY265 - 7 2026-07-13
AHY257 - 7 2026-07-15
AHY8230 - 6 2026-07-15
AHY261 - 6 2026-07-12
AHY258 - 6 2026-07-15
AHY256 - 6 2026-07-14
AHY255 - 6 2026-07-15
AHY252 - 6 2026-07-14
AHY251 - 6 2026-07-13
AHY262 - 5 2026-07-13
AHY253 - 5 2026-07-14
AHY8229 - 4 2026-07-14
AHY8223 Azerbaijan Airlines 4 2026-07-19
AHY8104 - 4 2026-06-30
AHY8047 - 4 2026-07-17
AHY703 - 4 2026-07-08
AHY263 - 4 2026-07-13
AHY8234 - 3 2026-07-18
AHY8233 - 3 2026-07-18
AHY8228 - 3 2026-07-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-19 AHY095 - Jul 19, 11:10 UTCJul 19, 15:45 UTC4h 35m
2026-07-19 AHY8224 TBS → GYD Jul 19, 07:50 UTCJul 19, 08:20 UTC30m
2026-07-19 AHY8223 GYD → TBS Jul 19, 06:05 UTCJul 19, 06:35 UTC30m
2026-07-19 AHY282 - Jul 19, 03:30 UTCJul 19, 03:50 UTC20m
2026-07-19 AHY281 - Jul 19, 01:35 UTCJul 19, 02:00 UTC25m
2026-07-18 AHY2258 - Jul 18, 17:40 UTCJul 18, 17:55 UTC15m
2026-07-18 AHY8234 - Jul 18, 12:45 UTCJul 18, 16:05 UTC3h 20m
2026-07-18 AHY8233 - Jul 18, 11:05 UTCJul 18, 11:35 UTC30m
2026-07-18 AHY8224 - Jul 18, 07:35 UTCJul 18, 08:05 UTC30m
2026-07-18 AHY8223 GYD → TBS Jul 18, 06:05 UTCJul 18, 06:35 UTC30m
2026-07-18 AHY282 - Jul 18, 03:25 UTCJul 18, 03:45 UTC20m
2026-07-18 AHY281 - Jul 18, 01:39 UTCJul 18, 02:09 UTC30m
2026-07-17 AHY294 - Jul 17, 13:29 UTCJul 17, 13:45 UTC15m
2026-07-17 AHY293 - Jul 17, 11:30 UTCJul 17, 11:55 UTC25m
2026-07-17 AHY8048 - Jul 17, 08:00 UTCJul 17, 08:54 UTC55m
2026-07-17 AHY8047 - Jul 17, 05:30 UTCJul 17, 06:45 UTC1h 15m
2026-07-16 AHY292 - Jul 16, 18:25 UTCJul 16, 18:44 UTC20m
2026-07-16 AHY8234 - Jul 16, 13:00 UTCJul 16, 16:35 UTC3h 35m
2026-07-16 AHY8233 - Jul 16, 08:00 UTCJul 16, 12:00 UTC4h 0m
2026-07-16 AHY2153 - Jul 16, 06:10 UTCJul 16, 06:35 UTC25m
2026-07-15 AHY258 - Jul 15, 20:30 UTCJul 15, 20:55 UTC25m
2026-07-15 AHY257 - Jul 15, 16:10 UTCJul 15, 19:05 UTC2h 55m
2026-07-15 AHY255 - Jul 15, 11:25 UTCJul 15, 14:30 UTC3h 5m
2026-07-15 AHY8230 - Jul 15, 05:50 UTCJul 15, 10:00 UTC4h 10m
2026-07-14 AHY8229 - Jul 14, 18:55 UTCJul 15, 04:40 UTC9h 44m
2026-07-14 AHY257 - Jul 14, 17:00 UTCJul 14, 17:25 UTC25m
2026-07-14 AHY256 - Jul 14, 14:30 UTCJul 14, 14:50 UTC20m
2026-07-14 AHY255 - Jul 14, 12:50 UTCJul 14, 13:10 UTC20m
2026-07-14 AHY254 - Jul 14, 10:20 UTCJul 14, 10:40 UTC20m
2026-07-14 AHY253 - Jul 14, 08:10 UTCJul 14, 08:35 UTC25m
2026-07-14 AHY252 - Jul 14, 05:30 UTCJul 14, 05:55 UTC25m
2026-07-13 AHY251 - Jul 13, 18:25 UTCJul 14, 04:00 UTC9h 35m
2026-07-13 AHY267 - Jul 13, 14:05 UTCJul 13, 17:00 UTC2h 55m
2026-07-13 AHY265 - Jul 13, 09:30 UTCJul 13, 12:30 UTC3h 0m
2026-07-13 AHY263 - Jul 13, 07:30 UTCJul 13, 07:55 UTC25m
2026-07-13 AHY262 - Jul 13, 05:01 UTCJul 13, 05:20 UTC20m
2026-07-12 AHY261 - Jul 12, 19:30 UTCJul 13, 03:25 UTC7h 55m
2026-07-12 AHY257 - Jul 12, 14:50 UTCJul 12, 18:05 UTC3h 15m
2026-07-12 AHY255 - Jul 12, 09:55 UTCJul 12, 13:15 UTC3h 20m
2026-07-12 AHY253 - Jul 12, 07:55 UTCJul 12, 08:25 UTC30m
2026-07-12 AHY252 - Jul 12, 05:20 UTCJul 12, 05:40 UTC20m
2026-07-12 AHY251 - Jul 12, 03:35 UTCJul 12, 04:01 UTC25m
2026-07-11 AHY8234 - Jul 11, 13:10 UTCJul 11, 13:40 UTC30m
2026-07-11 AHY8233 - Jul 11, 04:50 UTCJul 11, 12:10 UTC7h 20m
2026-07-10 AHY261 - Jul 10, 20:05 UTCJul 11, 03:20 UTC7h 15m
2026-07-10 AHY257 - Jul 10, 15:55 UTCJul 10, 18:50 UTC2h 55m
2026-07-10 AHY255 - Jul 10, 10:30 UTCJul 10, 14:30 UTC4h 0m
2026-07-10 AHY253 - Jul 10, 05:50 UTCJul 10, 09:00 UTC3h 10m
2026-07-10 AHY251 - Jul 10, 03:30 UTCJul 10, 04:00 UTC30m
2026-07-09 AHY2158 - Jul 9, 18:25 UTCJul 9, 18:45 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 4K-AZ64 page for operator, model, and routing details .

Mode-S 600840 frequently asked

What is Mode-S code 600840?
600840 is an ICAO 24-bit transponder address. Allocated to Azerbaijan. Assigned to 4K-AZ64.
Where is Mode-S 600840 registered?
Mode-S code 600840 is allocated to Azerbaijan (AZ). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 600840 broadcasting right now?
No active broadcast right now. Last signal was 7h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 600840, octal 30004100, decimal 6,293,568.
What flights does 600840 operate?
Mode-S 600840 has broadcast 20 distinct callsigns, including AHY265, AHY257, AHY8230, AHY261, AHY258.