Apparatus

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sensors Mode-S transponder

4B9E4A

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-GRJ · BOEING 737 MAX 8

Hex
4B9E4A
Octal
22717112
Decimal
4,955,722
Country
TR
Tail
TC-GRJ
Type
B38M
Broadcasting now · callsign STW283 · 36,000 ft
Flights observed
294
Distinct callsigns
20
Country
TR
Last broadcast
3h ago

Current position

4B9E4A is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4B9E4A 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
STW173 - 23 2026-07-10
STW083 - 18 2026-07-07
STW174 - 16 2026-07-13
STW123 - 16 2026-07-11
STW085 - 16 2026-07-10
STW358 - 15 2026-07-05
STW1085 South West Air Corporation 14 2026-04-22
STW171 - 13 2026-07-11
STW063 - 13 2026-07-13
STW322 - 12 2026-07-09
STW283 - 12 2026-07-12
STW086 - 12 2026-06-24
STW1086 South West Air Corporation 11 2026-04-20
STW357 - 10 2026-07-04
STW124 South West Air Corporation 10 2026-06-09
STW081 - 9 2026-07-12
STW084 - 8 2026-07-11
STW384 South West Air Corporation 7 2026-06-21
STW383 South West Air Corporation 6 2026-06-20
STW172 - 6 2026-07-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 STW064 - Jul 14, 03:25 UTCJul 14, 03:50 UTC25m
2026-07-13 STW063 - Jul 13, 16:35 UTCJul 13, 20:05 UTC3h 30m
2026-07-13 STW063 AYT → AYT Jul 13, 16:10 UTCJul 13, 16:15 UTC5m
2026-07-13 STW174 - Jul 13, 01:25 UTCJul 13, 03:45 UTC2h 20m
2026-07-12 STW081 - Jul 12, 21:30 UTCJul 12, 21:45 UTC15m
2026-07-12 STW081 - Jul 12, 18:15 UTCJul 12, 20:45 UTC2h 30m
2026-07-12 STW283 - Jul 12, 06:25 UTCJul 12, 16:30 UTC10h 5m
2026-07-11 STW123 - Jul 11, 18:30 UTCJul 12, 03:45 UTC9h 15m
2026-07-11 STW084 - Jul 11, 13:10 UTCJul 11, 15:30 UTC2h 20m
2026-07-11 STW171 - Jul 11, 06:30 UTCJul 11, 09:25 UTC2h 55m
2026-07-10 STW085 - Jul 10, 18:25 UTCJul 11, 03:35 UTC9h 10m
2026-07-10 STW173 - Jul 10, 06:55 UTCJul 10, 16:55 UTC10h 0m
2026-07-09 STW063 - Jul 9, 16:35 UTCJul 10, 03:45 UTC11h 10m
2026-07-09 STW322 - Jul 9, 05:00 UTCJul 9, 10:15 UTC5h 15m
2026-07-08 STW284 - Jul 8, 18:35 UTCJul 9, 03:30 UTC8h 55m
2026-07-08 STW171 - Jul 8, 06:40 UTCJul 8, 15:55 UTC9h 15m
2026-07-07 STW172 - Jul 7, 23:40 UTCJul 8, 02:40 UTC3h 0m
2026-07-07 STW172 - Jul 7, 22:40 UTCJul 7, 22:55 UTC15m
2026-07-07 STW083 - Jul 7, 17:25 UTCJul 7, 19:45 UTC2h 20m
2026-07-07 STW283 - Jul 7, 06:30 UTCJul 7, 15:30 UTC9h 0m
2026-07-07 STW284 - Jul 7, 01:15 UTCJul 7, 03:25 UTC2h 10m
2026-07-06 STW284 - Jul 6, 23:20 UTCJul 6, 23:40 UTC20m
2026-07-06 STW123 - Jul 6, 18:45 UTCJul 6, 21:00 UTC2h 15m
2026-07-06 STW173 - Jul 6, 06:55 UTCJul 6, 16:10 UTC9h 15m
2026-07-05 STW372 - Jul 5, 16:05 UTCJul 6, 00:55 UTC8h 50m
2026-07-05 STW198 - Jul 5, 07:35 UTCJul 5, 12:55 UTC5h 20m
2026-07-05 STW358 - Jul 5, 04:35 UTCJul 5, 06:20 UTC1h 45m
2026-07-05 STW358 GSV → GSV Jul 5, 02:45 UTCJul 5, 02:50 UTC5m
2026-07-04 STW357 - Jul 4, 22:15 UTCJul 5, 00:00 UTC1h 45m
2026-07-04 STW358 - Jul 4, 19:15 UTCJul 4, 20:55 UTC1h 40m
2026-07-03 STW357 - Jul 3, 17:10 UTCJul 3, 18:50 UTC1h 40m
2026-07-03 STW321 - Jul 3, 04:05 UTCJul 3, 09:30 UTC5h 25m
2026-07-02 STW174 - Jul 2, 23:55 UTCJul 3, 02:05 UTC2h 10m
2026-07-02 STW174 - Jul 2, 22:10 UTCJul 2, 22:25 UTC15m
2026-07-02 STW083 - Jul 2, 17:10 UTCJul 2, 19:35 UTC2h 25m
2026-07-02 STW283 - Jul 2, 06:35 UTCJul 2, 15:15 UTC8h 40m
2026-07-01 STW123 - Jul 1, 18:50 UTCJul 2, 03:55 UTC9h 5m
2026-07-01 STW171 DLM → SVO Jul 1, 06:30 UTCJul 1, 15:50 UTC9h 20m
2026-06-30 STW083 - Jun 30, 17:05 UTCJul 1, 02:30 UTC9h 25m
2026-06-30 STW283 - Jun 30, 06:20 UTCJun 30, 15:10 UTC8h 50m
2026-06-29 STW284 - Jun 29, 18:34 UTCJun 30, 04:00 UTC9h 26m
2026-06-29 STW171 DLM → SVO Jun 29, 06:44 UTCJun 29, 16:10 UTC9h 25m
2026-06-28 STW081 IST → SVO Jun 28, 17:19 UTCJun 29, 02:20 UTC9h 0m
2026-06-28 STW283 AYT → ZIA Jun 28, 06:15 UTCJun 28, 15:14 UTC9h 0m
2026-06-27 STW063 - Jun 27, 16:44 UTCJun 28, 03:50 UTC11h 5m
2026-06-27 STW322 AYT → AYT Jun 27, 03:30 UTCJun 27, 09:24 UTC5h 55m
2026-06-27 STW358 - Jun 27, 01:15 UTCJun 27, 01:44 UTC30m
2026-06-26 STW357 - Jun 26, 17:19 UTCJun 26, 19:04 UTC1h 45m
2026-06-26 STW198 AER → AYT Jun 26, 08:54 UTCJun 26, 09:05 UTC10m
2026-06-25 STW083 - Jun 25, 17:20 UTCJun 26, 03:34 UTC10h 15m

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

Mode-S 4B9E4A frequently asked

What is Mode-S code 4B9E4A?
4B9E4A is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-GRJ.
Where is Mode-S 4B9E4A registered?
Mode-S code 4B9E4A is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B9E4A broadcasting right now?
Yes. Mode-S 4B9E4A is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B9E4A, octal 22717112, decimal 4,955,722.
What flights does 4B9E4A operate?
Mode-S 4B9E4A has broadcast 20 distinct callsigns, including STW173, STW083, STW174, STW123, STW085.