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
Broadcasting now · callsign STW135 · 41,000 ft
Flights observed
124
Distinct callsigns
20
Country
TR
Last broadcast
1h ago

Current position

4B9E41 is currently broadcasting. Map zoomed to live position.

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 South West Air Corporation 29 2026-05-29
STW306 South West Air Corporation 16 2026-05-29
STW023 - 12 2026-05-16
STW141 South West Air Corporation 9 2026-05-26
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
STW136 South West Air Corporation 2 2026-05-29
STW135 South West Air Corporation 2 2026-05-30
STW1225 - 1 2026-05-27
MSC751 Air Cairo 1 2026-04-22
MSC732 - 1 2026-04-13
MSC731 Air Cairo 1 2026-04-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 STW135 AYT → SVO May 30, 03:15 UTCMay 30, 04:15 UTC1h 0m
2026-05-29 STW305 AYT → UFA May 29, 16:15 UTCMay 30, 01:40 UTC9h 25m
2026-05-29 STW136 SVO → AYT May 29, 11:40 UTCMay 29, 13:45 UTC2h 5m
2026-05-29 STW136 SVO → AYT May 29, 10:25 UTCMay 29, 10:45 UTC20m
2026-05-29 STW135 AYT → SVO May 29, 04:05 UTCMay 29, 07:15 UTC3h 10m
2026-05-29 STW306 UFA → AYT May 29, 01:25 UTCMay 29, 01:45 UTC20m
2026-05-28 STW305 AYT → UFA May 28, 16:00 UTCMay 29, 00:50 UTC8h 50m
2026-05-27 STW305 AYT → UFA May 27, 16:00 UTCMay 28, 01:40 UTC9h 40m
2026-05-27 STW1225 - May 27, 03:34 UTCMay 27, 05:24 UTC1h 50m
2026-05-27 STW306 UFA → AYT May 27, 01:24 UTCMay 27, 01:49 UTC25m
2026-05-26 STW305 AYT → UFA May 26, 16:05 UTCMay 27, 00:44 UTC8h 40m
2026-05-26 STW142 SVO → AYT May 26, 11:44 UTCMay 26, 14:00 UTC2h 15m
2026-05-26 STW142 SVO → AYT May 26, 10:20 UTCMay 26, 10:34 UTC15m
2026-05-26 STW141 AYT → SVO May 26, 07:45 UTCMay 26, 07:49 UTC5m
2026-05-26 STW141 AYT → SVO May 26, 04:00 UTCMay 26, 07:05 UTC3h 5m
2026-05-25 STW305 AYT → UFA May 25, 15:50 UTCMay 25, 17:40 UTC1h 50m
2026-05-25 STW142 SVO → AYT May 25, 10:25 UTCMay 25, 10:45 UTC20m
2026-05-25 STW141 AYT → SVO May 25, 04:25 UTCMay 25, 07:35 UTC3h 10m
2026-05-24 STW305 AYT → UFA May 24, 16:20 UTCMay 24, 18:10 UTC1h 50m
2026-05-24 STW142 SVO → AYT May 24, 11:35 UTCMay 24, 14:15 UTC2h 40m
2026-05-24 STW142 SVO → AYT May 24, 10:05 UTCMay 24, 10:25 UTC20m
2026-05-24 STW141 AYT → SVO May 24, 04:05 UTCMay 24, 07:10 UTC3h 5m
2026-05-24 STW306 UFA → AYT May 24, 01:25 UTCMay 24, 01:40 UTC15m
2026-05-23 STW305 AYT → UFA May 23, 16:20 UTCMay 23, 18:15 UTC1h 56m
2026-05-23 STW141 AYT → SVO May 23, 05:00 UTCMay 23, 14:35 UTC9h 35m
2026-05-23 STW306 UFA → AYT May 23, 01:10 UTCMay 23, 01:30 UTC20m
2026-05-22 STW305 AYT → UFA May 22, 16:10 UTCMay 22, 18:00 UTC1h 50m
2026-05-22 STW306 UFA → AYT May 22, 01:10 UTCMay 22, 01:30 UTC20m
2026-05-21 STW305 AYT → UFA May 21, 16:05 UTCMay 22, 00:30 UTC8h 25m
2026-05-21 STW141 AYT → SVO May 21, 04:20 UTCMay 21, 14:45 UTC10h 25m
2026-05-21 STW306 UFA → AYT May 21, 01:30 UTCMay 21, 01:50 UTC20m
2026-05-20 STW305 AYT → UFA May 20, 16:25 UTCMay 20, 19:05 UTC2h 40m
2026-05-20 STW141 AYT → SVO May 20, 04:50 UTCMay 20, 14:50 UTC10h 0m
2026-05-20 STW306 UFA → AYT May 20, 01:55 UTCMay 20, 02:15 UTC20m
2026-05-19 STW305 AYT → UFA May 19, 16:40 UTCMay 20, 01:10 UTC8h 30m
2026-05-19 STW141 AYT → SVO May 19, 05:00 UTCMay 19, 08:05 UTC3h 5m
2026-05-18 STW305 AYT → UFA May 18, 16:00 UTCMay 18, 18:35 UTC2h 34m
2026-05-18 STW226 SVX → AYT May 18, 05:10 UTCMay 18, 05:30 UTC20m
2026-05-17 STW225 AYT → SVX May 17, 17:55 UTCMay 18, 04:25 UTC10h 30m
2026-05-17 STW306 UFA → AYT May 17, 15:10 UTCMay 17, 15:31 UTC20m
2026-05-17 STW305 AYT → UFA May 17, 05:45 UTCMay 17, 14:25 UTC8h 40m
2026-05-17 STW024 KZN → AYT May 17, 03:00 UTCMay 17, 03:20 UTC20m
2026-05-16 STW023 - May 16, 17:35 UTCMay 16, 21:00 UTC3h 25m
2026-05-16 STW305 AYT → UFA May 16, 06:01 UTCMay 16, 08:36 UTC2h 35m
2026-05-16 STW126 SVX → AYT May 16, 03:30 UTCMay 16, 03:55 UTC25m
2026-05-15 STW125 AYT → SVX May 15, 17:00 UTCMay 16, 02:50 UTC9h 50m
2026-05-15 STW305 AYT → UFA May 15, 05:25 UTCMay 15, 07:55 UTC2h 30m
2026-05-15 STW1024 KZN → AYT May 15, 00:55 UTCMay 15, 01:15 UTC20m
2026-05-14 STW023 - May 14, 14:55 UTCMay 14, 18:10 UTC3h 15m
2026-05-14 STW024 KZN → AYT May 14, 06:25 UTCMay 14, 06:50 UTC25m

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?
Yes. Mode-S 4B9E41 is currently airborne.
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, STW023, STW141, STW225.