sensors Mode-S transponder

600851

ICAO 24-bit transponder address · allocated to Azerbaijan

Currently assigned to 4K-AZ81 · BOEING 767-300

Hex
600851
Octal
30004121
Decimal
6,293,585
Country
AZ
Tail
4K-AZ81
Type
B763
No current signal · last broadcast 6h ago
Flights observed
61
Distinct callsigns
18
Country
AZ
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S 600851.

Country allocation

The ICAO 24-bit address 600851 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 18 distinct

Callsign Airline Flights Last seen
AHY805 Azerbaijan Airlines 9 2026-05-27
AHY075 Azerbaijan Airlines 9 2026-05-25
AHY121 Azerbaijan Airlines 6 2026-05-16
AHY021 Azerbaijan Airlines 6 2026-05-29
AHY181 Azerbaijan Airlines 5 2026-05-07
AHY809 Azerbaijan Airlines 4 2026-05-20
AHY5218 - 4 2026-05-18
AHY122 Azerbaijan Airlines 4 2026-05-16
AHY076 Azerbaijan Airlines 3 2026-05-25
AHY807 Azerbaijan Airlines 2 2026-04-22
AHY077 Azerbaijan Airlines 2 2026-05-23
AHY810 Azerbaijan Airlines 1 2026-04-13
AHY5217 Azerbaijan Airlines 1 2026-05-16
AHY296 - 1 2026-05-29
AHY295 - 1 2026-05-29
AHY022 Azerbaijan Airlines 1 2026-05-27
AHY008 - 1 2026-04-28
AHY007 - 1 2026-04-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 AHY296 - May 29, 22:25 UTCMay 29, 22:40 UTC15m
2026-05-29 AHY295 - May 29, 20:25 UTCMay 29, 20:50 UTC25m
2026-05-29 AHY021 GYD → TLV May 29, 04:50 UTCMay 29, 05:05 UTC15m
2026-05-27 AHY805 GYD → VKO May 27, 19:35 UTCMay 27, 19:55 UTC20m
2026-05-27 AHY022 TLV → GYD May 27, 09:40 UTCMay 27, 11:50 UTC2h 10m
2026-05-27 AHY021 GYD → TLV May 27, 05:35 UTCMay 27, 08:10 UTC2h 35m
2026-05-25 AHY076 IST → GYD May 25, 10:05 UTCMay 25, 23:49 UTC13h 45m
2026-05-25 AHY075 GYD → IST May 25, 06:00 UTCMay 25, 07:10 UTC1h 10m
2026-05-24 AHY075 GYD → IST May 24, 06:20 UTCMay 25, 06:15 UTC23h 55m
2026-05-23 AHY077 GYD → IST May 23, 16:15 UTCMay 24, 06:45 UTC14h 30m
2026-05-22 AHY021 GYD → TLV May 22, 20:15 UTCMay 23, 08:15 UTC12h 0m
2026-05-22 AHY077 GYD → IST May 22, 17:05 UTCMay 22, 17:40 UTC35m
2026-05-20 AHY809 GYD → VKO May 20, 17:50 UTCMay 20, 18:35 UTC45m
2026-05-18 AHY5218 - May 18, 00:20 UTCMay 18, 19:15 UTC18h 54m
2026-05-17 AHY5218 - May 17, 22:40 UTCMay 18, 19:15 UTC20h 34m
2026-05-17 AHY5218 - May 17, 18:20 UTCMay 18, 18:15 UTC23h 55m
2026-05-17 AHY5218 - May 17, 15:35 UTCMay 18, 01:20 UTC9h 45m
2026-05-16 AHY5217 GYD → JED May 16, 18:20 UTCMay 17, 18:15 UTC23h 55m
2026-05-16 AHY122 KVD → LED May 16, 12:21 UTCMay 16, 18:40 UTC6h 20m
2026-05-16 AHY122 KVD → LED May 16, 12:11 UTCMay 16, 12:16 UTC5m
2026-05-16 AHY121 LED → KVD May 16, 09:45 UTCMay 16, 10:05 UTC20m
2026-05-16 AHY121 LED → KVD May 16, 07:35 UTCMay 16, 08:16 UTC40m
2026-05-15 AHY805 GYD → VKO May 15, 19:45 UTCMay 15, 20:30 UTC45m
2026-05-15 AHY805 GYD → VKO May 15, 18:55 UTCMay 15, 19:10 UTC15m
2026-05-15 AHY021 GYD → TLV May 15, 04:35 UTCMay 15, 07:05 UTC2h 30m
2026-05-14 AHY805 GYD → VKO May 14, 19:40 UTCMay 14, 20:00 UTC20m
2026-05-14 AHY076 IST → GYD May 14, 10:55 UTCMay 14, 18:40 UTC7h 45m
2026-05-13 AHY075 GYD → IST May 13, 17:05 UTCMay 14, 07:25 UTC14h 20m
2026-05-13 AHY021 GYD → TLV May 13, 05:25 UTCMay 13, 17:40 UTC12h 15m
2026-05-12 AHY021 GYD → TLV May 12, 17:10 UTCMay 13, 06:05 UTC12h 55m
2026-05-11 AHY805 GYD → VKO May 11, 18:20 UTCMay 12, 17:45 UTC23h 25m
2026-05-11 AHY122 KVD → LED May 11, 13:10 UTCMay 11, 18:50 UTC5h 41m
2026-05-10 AHY121 LED → KVD May 10, 16:20 UTCMay 11, 10:35 UTC18h 15m
2026-05-10 AHY121 LED → KVD May 10, 16:14 UTCMay 11, 10:35 UTC18h 20m
2026-05-10 AHY121 LED → KVD May 10, 10:19 UTCMay 11, 10:15 UTC23h 55m
2026-05-10 AHY122 KVD → LED May 10, 10:00 UTCMay 11, 08:15 UTC22h 15m
2026-05-09 AHY121 LED → KVD May 9, 18:15 UTCMay 10, 07:15 UTC13h 0m
2026-05-08 AHY805 GYD → VKO May 8, 18:30 UTCMay 9, 18:15 UTC23h 45m
2026-05-08 AHY805 GYD → VKO May 8, 10:25 UTCMay 8, 18:50 UTC8h 25m
2026-05-07 AHY181 GYD → DME May 7, 19:40 UTCMay 8, 10:25 UTC14h 45m
2026-05-01 AHY075 GYD → IST May 1, 05:05 UTCMay 1, 22:20 UTC17h 15m
2026-04-30 AHY075 GYD → IST Apr 30, 10:50 UTCMay 1, 06:25 UTC19h 35m
2026-04-29 AHY809 GYD → VKO Apr 29, 18:05 UTCApr 30, 11:00 UTC16h 54m
2026-04-29 AHY076 IST → GYD Apr 29, 10:30 UTCApr 29, 22:45 UTC12h 15m
2026-04-28 AHY008 - Apr 28, 21:25 UTCApr 29, 07:24 UTC10h 0m
2026-04-28 AHY007 - Apr 28, 14:15 UTCApr 28, 19:45 UTC5h 30m
2026-04-27 AHY181 GYD → DME Apr 27, 01:25 UTCApr 27, 07:20 UTC5h 55m
2026-04-26 AHY181 GYD → DME Apr 26, 09:50 UTCApr 27, 07:20 UTC21h 30m
2026-04-25 AHY075 GYD → IST Apr 25, 12:20 UTCApr 26, 06:25 UTC18h 5m
2026-04-25 AHY075 GYD → IST Apr 25, 11:00 UTCApr 26, 06:25 UTC19h 25m

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-AZ81 page for operator, model, and routing details .

Mode-S 600851 frequently asked

What is Mode-S code 600851?
600851 is an ICAO 24-bit transponder address. Allocated to Azerbaijan. Assigned to 4K-AZ81.
Where is Mode-S 600851 registered?
Mode-S code 600851 is allocated to Azerbaijan (AZ). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 600851 broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 600851, octal 30004121, decimal 6,293,585.
What flights does 600851 operate?
Mode-S 600851 has broadcast 18 distinct callsigns, including AHY805, AHY075, AHY121, AHY021, AHY181.