Apparatus

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sensors Mode-S transponder

4B9E4F

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-GRO · BOEING 737 MAX 8

Hex
4B9E4F
Octal
22717117
Decimal
4,955,727
Country
TR
Tail
TC-GRO
Type
B38M
No current signal · last broadcast Jun 13, 03:55 UTC
Flights observed
213
Distinct callsigns
20
Country
TR
Last broadcast
Jun 13, 03:55 UTC

Last known position

Most recent position reported by Mode-S 4B9E4F.

Country allocation

The ICAO 24-bit address 4B9E4F 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
STW063 South West Air Corporation 18 2026-06-11
STW358 - 17 2026-06-10
STW097 South West Air Corporation 16 2026-06-01
STW357 South West Air Corporation 13 2026-06-10
STW064 South West Air Corporation 13 2026-06-10
STW141 South West Air Corporation 11 2026-04-22
STW098 South West Air Corporation 11 2026-06-01
STW197 South West Air Corporation 10 2026-06-09
STW142 South West Air Corporation 10 2026-05-18
STW198 South West Air Corporation 9 2026-06-09
STW173 South West Air Corporation 6 2026-06-12
STW322 South West Air Corporation 5 2026-05-20
STW321 South West Air Corporation 5 2026-05-20
STW1203 - 5 2026-04-21
STW085 South West Air Corporation 5 2026-06-12
STW247 - 4 2026-04-18
STW168 South West Air Corporation 4 2026-04-19
STW1226 - 4 2026-05-07
STW1225 - 4 2026-05-06
STW1204 - 4 2026-04-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-12 STW085 IST → SVO Jun 12, 19:25 UTCJun 13, 03:55 UTC8h 30m
2026-06-12 STW173 AYT → SVO Jun 12, 08:00 UTCJun 12, 17:45 UTC9h 45m
2026-06-11 STW063 AYT → TJM Jun 11, 18:10 UTCJun 12, 04:45 UTC10h 35m
2026-06-11 STW324 - Jun 11, 06:20 UTCJun 11, 15:40 UTC9h 20m
2026-06-10 STW064 TJM → AYT Jun 10, 18:10 UTCJun 11, 05:05 UTC10h 55m
2026-06-10 STW358 - Jun 10, 15:05 UTCJun 10, 16:35 UTC1h 30m
2026-06-10 STW358 GSV → GSV Jun 10, 13:00 UTCJun 10, 13:05 UTC5m
2026-06-10 STW357 AYT → GSV Jun 10, 11:05 UTCJun 10, 11:30 UTC25m
2026-06-09 STW357 AYT → GSV Jun 9, 19:05 UTCJun 9, 20:20 UTC1h 15m
2026-06-09 STW357 AYT → GSV Jun 9, 17:35 UTCJun 9, 18:10 UTC35m
2026-06-09 STW198 AER → AYT Jun 9, 11:20 UTCJun 9, 11:35 UTC15m
2026-06-09 STW197 AYT → AER Jun 9, 06:35 UTCJun 9, 06:45 UTC10m
2026-06-08 STW063 AYT → TJM Jun 8, 16:30 UTCJun 9, 03:40 UTC11h 10m
2026-06-08 STW116 LED → AYT Jun 8, 11:10 UTCJun 8, 14:20 UTC3h 10m
2026-06-08 STW115 AYT → LED Jun 8, 04:40 UTCJun 8, 08:25 UTC3h 45m
2026-06-07 STW174 SVO → AYT Jun 7, 23:50 UTCJun 8, 02:10 UTC2h 20m
2026-06-07 STW081 IST → SVO Jun 7, 17:10 UTCJun 7, 19:35 UTC2h 25m
2026-06-07 STW283 AYT → ZIA Jun 7, 06:25 UTCJun 7, 15:15 UTC8h 50m
2026-06-06 STW123 IST → ZIA Jun 6, 18:29 UTCJun 7, 03:15 UTC8h 45m
2026-06-06 STW171 DLM → SVO Jun 6, 06:50 UTCJun 6, 15:54 UTC9h 5m
2026-06-05 STW085 IST → SVO Jun 5, 18:15 UTCJun 6, 03:15 UTC9h 0m
2026-06-05 STW173 AYT → SVO Jun 5, 06:45 UTCJun 5, 16:45 UTC10h 0m
2026-06-05 STW064 TJM → AYT Jun 5, 02:55 UTCJun 5, 03:20 UTC25m
2026-06-04 STW063 AYT → TJM Jun 4, 16:30 UTCJun 5, 02:05 UTC9h 35m
2026-06-03 STW063 AYT → TJM Jun 3, 17:10 UTCJun 4, 03:50 UTC10h 40m
2026-06-03 STW115 AYT → LED Jun 3, 06:30 UTCJun 3, 15:45 UTC9h 15m
2026-06-03 STW358 - Jun 3, 02:20 UTCJun 3, 02:45 UTC25m
2026-06-02 STW357 AYT → GSV Jun 2, 17:20 UTCJun 2, 19:15 UTC1h 55m
2026-06-02 STW198 AER → AYT Jun 2, 11:45 UTCJun 2, 12:00 UTC15m
2026-06-02 STW198 AER → AYT Jun 2, 10:50 UTCJun 2, 11:00 UTC10m
2026-06-02 STW197 AYT → AER Jun 2, 06:35 UTCJun 2, 06:55 UTC20m
2026-06-02 STW064 TJM → AYT Jun 2, 03:35 UTCJun 2, 03:50 UTC15m
2026-06-01 STW063 AYT → TJM Jun 1, 16:40 UTCJun 2, 02:45 UTC10h 5m
2026-06-01 STW098 MRV → AYT Jun 1, 10:05 UTCJun 1, 10:40 UTC35m
2026-06-01 STW097 AYT → MRV Jun 1, 04:50 UTCJun 1, 05:05 UTC15m
2026-06-01 STW064 TJM → AYT Jun 1, 01:15 UTCJun 1, 01:30 UTC15m
2026-05-31 STW063 AYT → TJM May 31, 14:35 UTCJun 1, 00:25 UTC9h 50m
2026-05-30 STW063 AYT → TJM May 30, 16:45 UTCMay 31, 11:25 UTC18h 40m
2026-05-30 STW097 AYT → MRV May 30, 04:05 UTCMay 30, 04:25 UTC20m
2026-05-30 STW358 - May 30, 02:10 UTCMay 30, 02:45 UTC35m
2026-05-29 STW358 - May 29, 22:10 UTCMay 29, 22:15 UTC5m
2026-05-29 STW357 AYT → GSV May 29, 17:05 UTCMay 29, 18:55 UTC1h 50m
2026-05-29 STW098 MRV → AYT May 29, 10:35 UTCMay 29, 10:45 UTC10m
2026-05-29 STW097 AYT → MRV May 29, 05:30 UTCMay 29, 05:55 UTC25m
2026-05-29 STW064 TJM → AYT May 29, 03:15 UTCMay 29, 03:40 UTC25m
2026-05-28 STW063 AYT → TJM May 28, 16:25 UTCMay 29, 02:35 UTC10h 10m
2026-05-28 STW098 MRV → AYT May 28, 10:40 UTCMay 28, 10:55 UTC15m
2026-05-28 STW097 AYT → MRV May 28, 05:20 UTCMay 28, 05:45 UTC25m
2026-05-27 STW3273 - May 27, 13:50 UTCMay 27, 23:55 UTC10h 5m
2026-05-27 STW098 MRV → AYT May 27, 10:15 UTCMay 27, 10:40 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-GRO page for operator, model, and routing details .

Mode-S 4B9E4F frequently asked

What is Mode-S code 4B9E4F?
4B9E4F is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-GRO.
Where is Mode-S 4B9E4F registered?
Mode-S code 4B9E4F is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B9E4F broadcasting right now?
No active broadcast right now. Last signal was Jun 13, 03:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B9E4F, octal 22717117, decimal 4,955,727.
What flights does 4B9E4F operate?
Mode-S 4B9E4F has broadcast 20 distinct callsigns, including STW063, STW358, STW097, STW357, STW064.