Apparatus

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sensors Mode-S transponder

4B9E41

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-GRA · AIRBUS A-330-200

Hex
4B9E41
Octal
22717101
Decimal
4,955,713
Country
TR
Tail
TC-GRA
Type
A332
No current signal · last broadcast 5h ago
Flights observed
221
Distinct callsigns
20
Country
TR
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 4B9E41.

Country allocation

The ICAO 24-bit address 4B9E41 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
STW305 - 68 2026-07-13
STW306 - 20 2026-07-14
STW136 South West Air Corporation 20 2026-06-15
STW135 South West Air Corporation 17 2026-06-17
STW023 - 12 2026-05-16
STW141 South West Air Corporation 9 2026-05-26
STW324 - 7 2026-07-12
STW323 - 7 2026-07-14
STW225 South West Air Corporation 7 2026-05-17
STW226 South West Air Corporation 6 2026-05-18
STW142 South West Air Corporation 6 2026-05-26
STW024 South West Air Corporation 6 2026-05-17
STW126 South West Air Corporation 5 2026-05-16
STW125 South West Air Corporation 5 2026-05-15
MSC741 Air Cairo 4 2026-04-20
STW1024 South West Air Corporation 3 2026-05-15
MSC742 Air Cairo 3 2026-04-18
MSC701 - 3 2026-04-16
STW168 - 2 2026-06-24
STW167 - 2 2026-07-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 STW323 - Jul 14, 03:35 UTCJul 14, 05:20 UTC1h 45m
2026-07-14 STW306 - Jul 14, 01:10 UTCJul 14, 01:35 UTC25m
2026-07-13 STW305 - Jul 13, 16:00 UTCJul 13, 17:50 UTC1h 50m
2026-07-13 STW305 AYT → AYT Jul 13, 15:45 UTCJul 13, 15:55 UTC10m
2026-07-12 STW305 AYT → AYT Jul 12, 16:20 UTCJul 13, 01:45 UTC9h 25m
2026-07-12 STW324 - Jul 12, 04:05 UTCJul 12, 14:40 UTC10h 35m
2026-07-11 STW305 - Jul 11, 16:45 UTCJul 12, 02:20 UTC9h 35m
2026-07-10 STW305 - Jul 10, 16:05 UTCJul 11, 01:35 UTC9h 31m
2026-07-09 STW171 - Jul 9, 17:40 UTCJul 10, 03:40 UTC10h 0m
2026-07-09 STW167 - Jul 9, 05:55 UTCJul 9, 08:55 UTC3h 0m
2026-07-08 STW305 - Jul 8, 16:10 UTCJul 8, 17:55 UTC1h 45m
2026-07-07 STW305 - Jul 7, 17:00 UTCJul 8, 02:45 UTC9h 45m
2026-07-07 STW323 - Jul 7, 03:40 UTCJul 7, 05:20 UTC1h 40m
2026-07-06 STW305 - Jul 6, 16:05 UTCJul 7, 01:40 UTC9h 35m
2026-07-05 STW305 - Jul 5, 16:40 UTCJul 5, 18:25 UTC1h 45m
2026-07-05 STW324 - Jul 5, 03:55 UTCJul 5, 15:05 UTC11h 10m
2026-07-04 STW305 - Jul 4, 16:15 UTCJul 4, 18:00 UTC1h 45m
2026-07-03 STW305 - Jul 3, 16:00 UTCJul 3, 17:45 UTC1h 45m
2026-07-02 STW323 - Jul 2, 03:00 UTCJul 2, 04:45 UTC1h 45m
2026-07-01 STW305 - Jul 1, 16:05 UTCJul 1, 17:55 UTC1h 50m
2026-06-30 STW305 - Jun 30, 16:15 UTCJul 1, 01:30 UTC9h 15m
2026-06-30 STW324 - Jun 30, 14:25 UTCJun 30, 14:45 UTC20m
2026-06-30 STW323 - Jun 30, 03:30 UTCJun 30, 13:45 UTC10h 15m
2026-06-29 STW305 - Jun 29, 16:00 UTCJun 29, 16:19 UTC20m
2026-06-28 STW305 - Jun 28, 16:29 UTCJun 28, 18:14 UTC1h 45m
2026-06-28 STW324 - Jun 28, 03:50 UTCJun 28, 14:50 UTC11h 0m
2026-06-27 STW305 - Jun 27, 16:10 UTCJun 28, 01:29 UTC9h 20m
2026-06-26 STW305 - Jun 26, 16:05 UTCJun 26, 17:44 UTC1h 40m
2026-06-25 STW305 - Jun 25, 15:54 UTCJun 26, 01:45 UTC9h 50m
2026-06-25 STW323 - Jun 25, 03:15 UTCJun 25, 14:14 UTC11h 0m
2026-06-24 STW305 - Jun 24, 16:05 UTCJun 24, 16:24 UTC20m
2026-06-24 STW168 SVO → SVO Jun 24, 09:24 UTCJun 24, 09:45 UTC20m
2026-06-23 STW305 - Jun 23, 16:24 UTCJun 23, 18:55 UTC2h 30m
2026-06-23 STW324 - Jun 23, 03:45 UTCJun 23, 14:55 UTC11h 10m
2026-06-22 STW305 - Jun 22, 16:10 UTCJun 23, 01:40 UTC9h 30m
2026-06-21 STW305 AYT → UFA Jun 21, 16:54 UTCJun 22, 02:14 UTC9h 20m
2026-06-21 STW324 - Jun 21, 03:49 UTCJun 21, 15:19 UTC11h 30m
2026-06-20 STW306 AYT → AYT Jun 20, 15:54 UTCJun 21, 01:49 UTC9h 55m
2026-06-20 STW168 - Jun 20, 10:25 UTCJun 20, 13:24 UTC3h 0m
2026-06-20 STW167 - Jun 20, 03:14 UTCJun 20, 06:19 UTC3h 5m
2026-06-19 STW305 AYT → UFA Jun 19, 16:04 UTCJun 19, 17:44 UTC1h 40m
2026-06-19 STW6151 - Jun 19, 04:54 UTCJun 19, 13:54 UTC9h 0m
2026-06-18 STW305 AYT → UFA Jun 18, 16:10 UTCJun 18, 17:55 UTC1h 45m
2026-06-18 STW323 - Jun 18, 03:10 UTCJun 18, 13:35 UTC10h 25m
2026-06-17 STW135 AYT → SVO Jun 17, 03:50 UTCJun 17, 13:10 UTC9h 20m
2026-06-16 STW305 AYT → UFA Jun 16, 16:35 UTCJun 17, 01:55 UTC9h 21m
2026-06-16 STW324 - Jun 16, 14:55 UTCJun 16, 15:05 UTC10m
2026-06-15 STW305 AYT → UFA Jun 15, 16:04 UTCJun 15, 17:54 UTC1h 50m
2026-06-15 STW136 SVO → AYT Jun 15, 11:00 UTCJun 15, 13:10 UTC2h 10m
2026-06-15 STW135 AYT → SVO Jun 15, 03:30 UTCJun 15, 06:30 UTC3h 0m

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

Mode-S 4B9E41 frequently asked

What is Mode-S code 4B9E41?
4B9E41 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-GRA.
Where is Mode-S 4B9E41 registered?
Mode-S code 4B9E41 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B9E41 broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B9E41, octal 22717101, decimal 4,955,713.
What flights does 4B9E41 operate?
Mode-S 4B9E41 has broadcast 20 distinct callsigns, including STW305, STW306, STW136, STW135, STW023.