Apparatus

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sensors Mode-S transponder

4B9E59

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-GRY · BOEING 777-300

Hex
4B9E59
Octal
22717131
Decimal
4,955,737
Country
TR
Tail
TC-GRY
Type
B773
No current signal · last broadcast Jul 26, 19:20 UTC
Flights observed
219
Distinct callsigns
14
Country
TR
Last broadcast
Jul 26, 19:20 UTC

Last known position

Most recent position reported by Mode-S 4B9E59.

Country allocation

The ICAO 24-bit address 4B9E59 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 14 distinct

Callsign Airline Flights Last seen
STW002 - 37 2026-07-23
STW023 - 33 2026-07-25
STW001 - 26 2026-07-26
STW142 - 23 2026-07-14
STW125 South West Air Corporation 22 2026-07-22
STW024 South West Air Corporation 20 2026-07-26
STW126 South West Air Corporation 16 2026-07-23
STW225 South West Air Corporation 12 2026-07-26
STW1024 - 10 2026-07-12
STW226 South West Air Corporation 8 2026-07-24
STW011 South West Air Corporation 6 2026-07-24
STW141 South West Air Corporation 4 2026-07-25
STW5301 South West Air Corporation 1 2026-06-03
STW012 - 1 2026-07-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 STW225 AYT → SVX Jul 26, 18:10 UTCJul 26, 19:20 UTC1h 10m
2026-07-26 STW001 - Jul 26, 04:55 UTCJul 26, 14:30 UTC9h 36m
2026-07-26 STW024 KZN → AYT Jul 26, 02:30 UTCJul 26, 02:55 UTC25m
2026-07-25 STW023 - Jul 25, 17:05 UTCJul 25, 17:20 UTC15m
2026-07-25 STW141 AYT → SVO Jul 25, 04:30 UTCJul 25, 14:40 UTC10h 10m
2026-07-24 STW011 AYT → SVO Jul 24, 16:45 UTCJul 25, 02:25 UTC9h 40m
2026-07-24 STW226 SVX → AYT Jul 24, 04:40 UTCJul 24, 05:05 UTC25m
2026-07-23 STW225 AYT → SVX Jul 23, 19:05 UTCJul 23, 20:15 UTC1h 10m
2026-07-23 STW002 - Jul 23, 05:30 UTCJul 23, 17:00 UTC11h 30m
2026-07-23 STW126 SVX → AYT Jul 23, 03:05 UTCJul 23, 03:35 UTC30m
2026-07-22 STW125 AYT → SVX Jul 22, 16:30 UTCJul 22, 17:35 UTC1h 5m
2026-07-22 STW024 KZN → AYT Jul 22, 11:10 UTCJul 22, 11:40 UTC30m
2026-07-21 STW023 - Jul 21, 15:15 UTCJul 21, 18:25 UTC3h 10m
2026-07-20 STW125 AYT → SVX Jul 20, 16:10 UTCJul 21, 03:35 UTC11h 24m
2026-07-20 STW002 - Jul 20, 04:35 UTCJul 20, 14:30 UTC9h 55m
2026-07-19 STW023 - Jul 19, 15:10 UTCJul 20, 01:00 UTC9h 50m
2026-07-18 STW125 AYT → SVX Jul 18, 16:35 UTCJul 18, 17:50 UTC1h 15m
2026-07-18 STW002 - Jul 18, 04:35 UTCJul 18, 14:15 UTC9h 40m
2026-07-17 STW023 - Jul 17, 16:44 UTCJul 18, 02:35 UTC9h 50m
2026-07-17 STW226 - Jul 17, 04:39 UTCJul 17, 05:15 UTC35m
2026-07-16 STW225 - Jul 16, 18:15 UTCJul 16, 19:35 UTC1h 20m
2026-07-15 STW125 - Jul 15, 16:30 UTCJul 16, 03:25 UTC10h 55m
2026-07-15 STW226 - Jul 15, 05:05 UTCJul 15, 05:30 UTC25m
2026-07-14 STW225 - Jul 14, 18:15 UTCJul 14, 19:15 UTC1h 0m
2026-07-14 STW142 - Jul 14, 04:25 UTCJul 14, 14:05 UTC9h 40m
2026-07-13 STW011 AYT → AYT Jul 13, 16:25 UTCJul 14, 02:35 UTC10h 10m
2026-07-13 STW002 - Jul 13, 04:25 UTCJul 13, 14:35 UTC10h 10m
2026-07-12 STW1024 AYT → AYT Jul 12, 15:15 UTCJul 13, 01:45 UTC10h 30m
2026-07-11 STW125 - Jul 11, 16:20 UTCJul 11, 17:50 UTC1h 30m
2026-07-11 STW126 - Jul 11, 05:05 UTCJul 11, 05:31 UTC25m
2026-07-10 STW125 - Jul 10, 17:15 UTCJul 11, 03:20 UTC10h 5m
2026-07-10 STW142 - Jul 10, 04:20 UTCJul 10, 14:05 UTC9h 45m
2026-07-10 STW1024 - Jul 10, 00:50 UTCJul 10, 01:05 UTC15m
2026-07-09 STW023 - Jul 9, 15:10 UTCJul 9, 23:25 UTC8h 15m
2026-07-08 STW023 - Jul 8, 15:45 UTCJul 9, 01:10 UTC9h 25m
2026-07-08 STW142 - Jul 8, 04:25 UTCJul 8, 14:05 UTC9h 40m
2026-07-07 STW023 - Jul 7, 15:15 UTCJul 8, 01:05 UTC9h 50m
2026-07-06 STW125 - Jul 6, 18:30 UTCJul 7, 04:50 UTC10h 20m
2026-07-05 STW225 - Jul 5, 18:20 UTCJul 6, 04:50 UTC10h 30m
2026-07-05 STW142 - Jul 5, 04:05 UTCJul 5, 14:00 UTC9h 55m
2026-07-04 STW012 - Jul 4, 23:10 UTCJul 5, 02:10 UTC3h 0m
2026-07-04 STW011 - Jul 4, 16:20 UTCJul 4, 19:05 UTC2h 45m
2026-07-04 STW002 - Jul 4, 04:30 UTCJul 4, 14:10 UTC9h 40m
2026-07-03 STW023 - Jul 3, 16:40 UTCJul 3, 17:30 UTC50m
2026-07-03 STW002 - Jul 3, 04:30 UTCJul 3, 14:30 UTC10h 0m
2026-07-02 STW011 - Jul 2, 16:20 UTCJul 3, 02:15 UTC9h 55m
2026-07-02 STW142 - Jul 2, 04:00 UTCJul 2, 13:55 UTC9h 55m
2026-07-01 STW023 - Jul 1, 15:15 UTCJul 2, 00:55 UTC9h 40m
2026-06-30 STW225 - Jun 30, 18:15 UTCJul 1, 04:40 UTC10h 25m
2026-06-30 STW001 - Jun 30, 04:25 UTCJun 30, 14:20 UTC9h 55m

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

Mode-S 4B9E59 frequently asked

What is Mode-S code 4B9E59?
4B9E59 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-GRY.
Where is Mode-S 4B9E59 registered?
Mode-S code 4B9E59 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B9E59 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 19:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B9E59, octal 22717131, decimal 4,955,737.
What flights does 4B9E59 operate?
Mode-S 4B9E59 has broadcast 14 distinct callsigns, including STW002, STW023, STW001, STW142, STW125.