Apparatus

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sensors Mode-S transponder

4B8587

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-ALG · GULFSTREAM 5

Hex
4B8587
Octal
22702607
Decimal
4,949,383
Country
TR
Tail
TC-ALG
Type
GLF5
No current signal · last broadcast Jul 26, 12:40 UTC
Flights observed
90
Distinct callsigns
20
Country
TR
Last broadcast
Jul 26, 12:40 UTC

Last known position

Most recent position reported by Mode-S 4B8587.

Country allocation

The ICAO 24-bit address 4B8587 falls within the block assigned to Turkey (TR) by ICAO Annex 10, Volume III. Every aircraft registered in Turkey 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
HMZ2043 - 3 2026-06-24
HMZ2011 - 3 2026-06-18
HMZ7948 - 2 2026-06-01
HMZ6366 - 2 2026-04-25
HMZ294 - 2 2026-05-20
HMZ289 - 2 2026-05-24
HMZ250 - 2 2026-05-03
HMZ235 - 2 2026-04-17
HMZ232 - 2 2026-04-17
HMZ231 - 2 2026-04-16
HMZ214 - 2 2026-04-13
HMZ2083 - 2 2026-07-25
HMZ2069 - 2 2026-07-20
HMZ2056 - 2 2026-07-14
HMZ2055 - 2 2026-07-12
HMZ2053 - 2 2026-07-10
HMZ2048 - 2 2026-06-28
HMZ2027 - 2 2026-06-11
HMZ2009 - 2 2026-06-15
HMZ9151 - 1 2026-04-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 HMZ3939 - Jul 26, 09:50 UTCJul 26, 12:40 UTC2h 50m
2026-07-26 HMZ2084 - Jul 26, 07:15 UTCJul 26, 07:55 UTC40m
2026-07-25 HMZ2083 - Jul 25, 12:05 UTCJul 26, 06:30 UTC18h 25m
2026-07-25 HMZ2083 - Jul 25, 09:15 UTCJul 26, 06:30 UTC21h 15m
2026-07-21 HMZ2078 - Jul 21, 20:20 UTCJul 21, 20:50 UTC30m
2026-07-21 HMZ2076 - Jul 21, 19:30 UTCJul 21, 19:40 UTC10m
2026-07-21 HMZ2070 - Jul 21, 10:15 UTCJul 21, 12:45 UTC2h 30m
2026-07-20 HMZ2069 - Jul 20, 20:40 UTCJul 21, 07:55 UTC11h 15m
2026-07-20 HMZ2068 - Jul 20, 01:05 UTCJul 20, 16:20 UTC15h 15m
2026-07-17 HMZ2065 - Jul 17, 23:55 UTCJul 18, 00:50 UTC55m
2026-07-15 HMZ2058 - Jul 15, 16:55 UTCJul 15, 18:20 UTC1h 25m
2026-07-14 HMZ2057 - Jul 14, 03:15 UTCJul 14, 05:10 UTC1h 55m
2026-07-14 HMZ2056 - Jul 14, 01:20 UTCJul 14, 02:00 UTC40m
2026-07-12 HMZ2055 - Jul 12, 10:25 UTCJul 12, 11:25 UTC1h 0m
2026-07-10 HMZ2069 - Jul 10, 09:45 UTCJul 11, 01:35 UTC15h 50m
2026-07-10 HMZ2053 - Jul 10, 08:05 UTCJul 10, 08:25 UTC20m
2026-07-10 HMZ2053 - Jul 10, 02:05 UTCJul 10, 05:25 UTC3h 20m
2026-07-10 HMZ2052 - Jul 10, 01:05 UTCJul 10, 02:00 UTC55m
2026-07-08 HMZ2051 - Jul 8, 08:30 UTCJul 8, 09:40 UTC1h 10m
2026-07-06 HMZ2056 - Jul 6, 11:20 UTCJul 6, 11:50 UTC30m
2026-07-06 HMZ2055 - Jul 6, 08:40 UTCJul 6, 09:15 UTC35m
2026-07-03 HMZ2042 - Jul 3, 03:25 UTCJul 3, 06:25 UTC3h 0m
2026-06-29 HMZ2037 - Jun 29, 04:34 UTCJun 29, 07:20 UTC2h 45m
2026-06-28 HMZ2048 - Jun 28, 01:50 UTCJun 28, 03:19 UTC1h 30m
2026-06-27 HMZ2048 - Jun 27, 21:15 UTCJun 27, 21:25 UTC10m
2026-06-26 HMZ2047 - Jun 26, 13:40 UTCJun 26, 14:44 UTC1h 5m
2026-06-24 HMZ2043 - Jun 24, 13:05 UTCJun 24, 14:29 UTC1h 25m
2026-06-21 HMZ3912 - Jun 21, 01:35 UTCJun 21, 09:44 UTC8h 10m
2026-06-18 HMZ2011 - Jun 18, 02:45 UTCJun 18, 05:10 UTC2h 25m
2026-06-17 HMZ2011 - Jun 17, 05:50 UTCJun 18, 05:10 UTC23h 20m
2026-06-17 HMZ2011 - Jun 17, 05:30 UTCJun 18, 03:45 UTC22h 15m
2026-06-15 HMZ2009 - Jun 15, 19:50 UTCJun 16, 01:35 UTC5h 45m
2026-06-14 HMZ2009 - Jun 14, 21:50 UTCJun 15, 21:20 UTC23h 30m
2026-06-14 HMZ2019 - Jun 14, 20:45 UTCJun 14, 22:30 UTC1h 45m
2026-06-14 HMZ2045 - Jun 14, 18:55 UTCJun 14, 19:25 UTC30m
2026-06-14 HMZ8316 - Jun 14, 15:05 UTCJun 14, 17:20 UTC2h 15m
2026-06-14 HMZ8315 TBS → LIN Jun 14, 09:55 UTCJun 14, 13:55 UTC4h 0m
2026-06-13 HMZ8314 - Jun 13, 15:00 UTCJun 14, 08:55 UTC17h 55m
2026-06-13 HMZ2043 - Jun 13, 13:05 UTCJun 13, 13:40 UTC35m
2026-06-12 HMZ2043 - Jun 12, 15:50 UTCJun 13, 13:40 UTC21h 49m
2026-06-12 HMZ2028 - Jun 12, 15:15 UTCJun 13, 13:40 UTC22h 24m
2026-06-11 HMZ2027 - Jun 11, 19:50 UTCJun 12, 16:05 UTC20h 16m
2026-06-11 HMZ2027 - Jun 11, 18:10 UTCJun 12, 16:05 UTC21h 55m
2026-06-11 HMZ2026 - Jun 11, 15:50 UTCJun 11, 16:35 UTC45m
2026-06-11 HMZ3892 - Jun 11, 00:10 UTCJun 11, 14:40 UTC14h 30m
2026-06-07 HMZ2024 - Jun 7, 20:05 UTCJun 7, 21:40 UTC1h 35m
2026-06-07 HMZ2022 - Jun 7, 18:10 UTCJun 7, 19:00 UTC50m
2026-06-07 HMZ2021 - Jun 7, 14:55 UTCJun 7, 16:30 UTC1h 35m
2026-06-07 HMZ2020 - Jun 7, 12:20 UTCJun 7, 12:55 UTC35m
2026-06-05 HMZ2015 - Jun 5, 20:05 UTCJun 5, 22:25 UTC2h 20m

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 TC-ALG page for operator, model, and routing details .

Mode-S 4B8587 frequently asked

What is Mode-S code 4B8587?
4B8587 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-ALG.
Where is Mode-S 4B8587 registered?
Mode-S code 4B8587 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B8587 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 12:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B8587, octal 22702607, decimal 4,949,383.
What flights does 4B8587 operate?
Mode-S 4B8587 has broadcast 20 distinct callsigns, including HMZ2043, HMZ2011, HMZ7948, HMZ6366, HMZ294.