Apparatus

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sensors Mode-S transponder

4B9E56

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-GRV · BOEING 777-300

Hex
4B9E56
Octal
22717126
Decimal
4,955,734
Country
TR
Tail
TC-GRV
Type
B773
No current signal · last broadcast 1h ago
Flights observed
102
Distinct callsigns
15
Country
TR
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 4B9E56.

Country allocation

The ICAO 24-bit address 4B9E56 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 15 distinct

Callsign Airline Flights Last seen
STW002 - 14 2026-07-11
STW001 - 13 2026-07-14
STW225 - 11 2026-07-09
STW141 - 10 2026-07-12
STW024 - 9 2026-07-14
STW126 - 7 2026-06-20
STW125 - 7 2026-07-08
STW023 - 7 2026-07-13
STW142 - 6 2026-07-04
STW012 - 5 2026-07-12
STW011 - 5 2026-07-06
STW226 South West Air Corporation 4 2026-06-15
STW1024 South West Air Corporation 2 2026-06-21
STW8002 - 1 2026-05-28
STW135 South West Air Corporation 1 2026-06-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 STW001 - Jul 14, 04:30 UTCJul 14, 05:10 UTC40m
2026-07-14 STW024 - Jul 14, 00:40 UTCJul 14, 01:00 UTC20m
2026-07-13 STW023 - Jul 13, 15:05 UTCJul 13, 21:25 UTC6h 20m
2026-07-12 STW012 AYT → AYT Jul 12, 17:15 UTCJul 13, 03:30 UTC10h 15m
2026-07-12 STW141 AYT → AYT Jul 12, 04:05 UTCJul 12, 15:30 UTC11h 25m
2026-07-11 STW012 - Jul 11, 16:30 UTCJul 12, 02:01 UTC9h 30m
2026-07-11 STW002 - Jul 11, 04:30 UTCJul 11, 14:20 UTC9h 50m
2026-07-10 STW024 - Jul 10, 16:50 UTCJul 11, 02:45 UTC9h 55m
2026-07-09 STW225 - Jul 9, 18:10 UTCJul 10, 05:20 UTC11h 10m
2026-07-09 STW002 - Jul 9, 12:10 UTCJul 9, 14:35 UTC2h 25m
2026-07-09 STW001 - Jul 9, 05:30 UTCJul 9, 08:20 UTC2h 50m
2026-07-08 STW125 - Jul 8, 16:30 UTCJul 8, 18:15 UTC1h 45m
2026-07-07 STW225 - Jul 7, 18:10 UTCJul 8, 06:40 UTC12h 30m
2026-07-07 STW002 - Jul 7, 04:30 UTCJul 7, 14:50 UTC10h 20m
2026-07-06 STW011 - Jul 6, 16:30 UTCJul 7, 02:15 UTC9h 45m
2026-07-06 STW001 - Jul 6, 04:25 UTCJul 6, 14:10 UTC9h 45m
2026-07-05 STW023 - Jul 5, 15:35 UTCJul 6, 01:40 UTC10h 5m
2026-07-04 STW024 - Jul 4, 16:55 UTCJul 5, 03:20 UTC10h 25m
2026-07-04 STW142 - Jul 4, 04:30 UTCJul 4, 13:55 UTC9h 25m
2026-07-04 STW012 - Jul 4, 01:00 UTCJul 4, 03:05 UTC2h 5m
2026-07-03 STW011 - Jul 3, 16:25 UTCJul 3, 19:00 UTC2h 35m
2026-07-02 STW225 - Jul 2, 18:30 UTCJul 3, 04:45 UTC10h 15m
2026-07-02 STW002 - Jul 2, 05:00 UTCJul 2, 14:50 UTC9h 50m
2026-07-01 STW011 - Jul 1, 16:30 UTCJul 2, 02:50 UTC10h 20m
2026-07-01 STW142 - Jul 1, 04:25 UTCJul 1, 14:15 UTC9h 50m
2026-06-30 STW012 - Jun 30, 16:25 UTCJul 1, 02:35 UTC10h 10m
2026-06-30 STW142 - Jun 30, 11:05 UTCJun 30, 14:05 UTC3h 0m
2026-06-30 STW141 - Jun 30, 04:00 UTCJun 30, 04:45 UTC45m
2026-06-29 STW024 - Jun 29, 15:14 UTCJun 30, 00:49 UTC9h 35m
2026-06-28 STW011 - Jun 28, 16:14 UTCJun 29, 02:25 UTC10h 10m
2026-06-28 STW142 - Jun 28, 04:10 UTCJun 28, 13:49 UTC9h 40m
2026-06-27 STW012 - Jun 27, 23:10 UTCJun 28, 02:20 UTC3h 10m
2026-06-27 STW011 - Jun 27, 16:55 UTCJun 27, 19:15 UTC2h 20m
2026-06-27 STW001 - Jun 27, 06:09 UTCJun 27, 15:24 UTC9h 15m
2026-06-26 STW125 - Jun 26, 17:15 UTCJun 27, 04:19 UTC11h 5m
2026-06-25 STW225 AYT → AYT Jun 25, 18:10 UTCJun 26, 05:10 UTC11h 0m
2026-06-25 STW002 - Jun 25, 04:54 UTCJun 25, 14:34 UTC9h 40m
2026-06-24 STW023 - Jun 24, 16:40 UTCJun 25, 02:05 UTC9h 25m
2026-06-24 STW141 - Jun 24, 04:10 UTCJun 24, 14:00 UTC9h 50m
2026-06-23 STW023 - Jun 23, 15:34 UTCJun 24, 01:55 UTC10h 20m
2026-06-23 STW141 - Jun 23, 04:50 UTCJun 23, 14:04 UTC9h 15m
2026-06-22 STW023 - Jun 22, 17:10 UTCJun 23, 02:45 UTC9h 35m
2026-06-22 STW135 AYT → SVO Jun 22, 04:34 UTCJun 22, 14:40 UTC10h 5m
2026-06-21 STW1024 KZN → AYT Jun 21, 16:49 UTCJun 22, 02:34 UTC9h 45m
2026-06-21 STW142 - Jun 21, 05:35 UTCJun 21, 14:54 UTC9h 20m
2026-06-20 STW024 - Jun 20, 16:49 UTCJun 21, 03:00 UTC10h 10m
2026-06-20 STW001 - Jun 20, 05:54 UTCJun 20, 15:04 UTC9h 10m
2026-06-20 STW126 - Jun 20, 03:49 UTCJun 20, 04:09 UTC20m
2026-06-19 STW125 - Jun 19, 17:14 UTCJun 20, 03:09 UTC9h 55m
2026-06-18 STW225 AYT → SVX Jun 18, 20:00 UTCJun 19, 05:30 UTC9h 29m

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

Mode-S 4B9E56 frequently asked

What is Mode-S code 4B9E56?
4B9E56 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-GRV.
Where is Mode-S 4B9E56 registered?
Mode-S code 4B9E56 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B9E56 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B9E56, octal 22717126, decimal 4,955,734.
What flights does 4B9E56 operate?
Mode-S 4B9E56 has broadcast 15 distinct callsigns, including STW002, STW001, STW225, STW141, STW024.