Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

4B9E4B

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-GRK · BOEING 737 MAX 8

Hex
4B9E4B
Octal
22717113
Decimal
4,955,723
Country
TR
Tail
TC-GRK
Type
B38M
No current signal · last broadcast 3h ago
Flights observed
315
Distinct callsigns
20
Country
TR
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 4B9E4B.

Country allocation

The ICAO 24-bit address 4B9E4B 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
STW322 - 34 2026-07-11
STW321 - 31 2026-06-20
STW383 South West Air Corporation 27 2026-06-17
STW040 South West Air Corporation 24 2026-06-20
STW039 South West Air Corporation 24 2026-06-19
STW384 South West Air Corporation 23 2026-06-18
STW197 - 13 2026-07-14
STW063 - 13 2026-07-12
STW198 - 11 2026-07-12
STW358 - 9 2026-07-10
STW173 - 8 2026-07-13
STW372 - 5 2026-07-07
STW357 - 5 2026-07-01
STW085 - 5 2026-07-03
STW6708 - 4 2026-06-08
STW371 South West Air Corporation 4 2026-04-19
STW123 - 4 2026-07-13
STW098 South West Air Corporation 4 2026-04-18
STW084 South West Air Corporation 4 2026-05-14
STW6707 - 3 2026-06-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 STW197 - Jul 14, 06:35 UTCJul 14, 07:50 UTC1h 15m
2026-07-13 STW123 - Jul 13, 18:35 UTCJul 14, 03:25 UTC8h 50m
2026-07-13 STW173 - Jul 13, 06:55 UTCJul 13, 17:00 UTC10h 5m
2026-07-12 STW063 AYT → AYT Jul 12, 15:01 UTCJul 13, 01:30 UTC10h 30m
2026-07-12 STW198 - Jul 12, 13:05 UTCJul 12, 13:30 UTC25m
2026-07-12 STW197 - Jul 12, 06:25 UTCJul 12, 06:45 UTC20m
2026-07-11 STW063 - Jul 11, 16:40 UTCJul 12, 03:35 UTC10h 55m
2026-07-11 STW322 - Jul 11, 03:40 UTCJul 11, 09:10 UTC5h 30m
2026-07-10 STW358 - Jul 10, 17:20 UTCJul 11, 01:45 UTC8h 26m
2026-07-10 STW198 - Jul 10, 04:30 UTCJul 10, 08:55 UTC4h 25m
2026-07-09 STW083 - Jul 9, 17:20 UTCJul 10, 03:00 UTC9h 40m
2026-07-09 STW283 - Jul 9, 06:30 UTCJul 9, 15:10 UTC8h 40m
2026-07-08 STW063 - Jul 8, 16:50 UTCJul 9, 03:50 UTC11h 0m
2026-07-08 STW322 - Jul 8, 03:25 UTCJul 8, 09:05 UTC5h 40m
2026-07-07 STW372 - Jul 7, 14:25 UTCJul 7, 23:25 UTC9h 0m
2026-07-07 STW198 - Jul 7, 12:45 UTCJul 7, 13:10 UTC25m
2026-07-07 STW197 - Jul 7, 06:35 UTCJul 7, 07:00 UTC25m
2026-07-06 STW168 - Jul 6, 17:10 UTCJul 7, 02:50 UTC9h 40m
2026-07-06 STW167 - Jul 6, 05:45 UTCJul 6, 14:45 UTC9h 0m
2026-07-05 STW174 - Jul 5, 22:00 UTCJul 6, 01:55 UTC3h 55m
2026-07-05 STW081 - Jul 5, 17:00 UTCJul 5, 19:20 UTC2h 20m
2026-07-05 STW283 - Jul 5, 06:30 UTCJul 5, 15:15 UTC8h 45m
2026-07-04 STW123 - Jul 4, 18:25 UTCJul 5, 04:05 UTC9h 40m
2026-07-04 STW171 DLM → SVO Jul 4, 06:45 UTCJul 4, 15:30 UTC8h 45m
2026-07-03 STW085 - Jul 3, 17:45 UTCJul 4, 03:40 UTC9h 55m
2026-07-03 STW173 - Jul 3, 06:40 UTCJul 3, 16:00 UTC9h 20m
2026-07-02 STW168 - Jul 2, 19:20 UTCJul 3, 04:50 UTC9h 30m
2026-07-02 STW8003 - Jul 2, 17:10 UTCJul 2, 17:35 UTC25m
2026-07-02 STW358 - Jul 2, 15:00 UTCJul 2, 16:00 UTC1h 0m
2026-07-02 STW358 GSV → GSV Jul 2, 12:30 UTCJul 2, 12:40 UTC10m
2026-07-01 STW357 - Jul 1, 17:25 UTCJul 1, 19:15 UTC1h 50m
2026-07-01 STW322 - Jul 1, 05:30 UTCJul 1, 10:35 UTC5h 5m
2026-06-30 STW358 - Jun 30, 23:50 UTCJul 1, 01:40 UTC1h 50m
2026-06-30 STW357 - Jun 30, 17:05 UTCJun 30, 18:50 UTC1h 45m
2026-06-30 STW198 - Jun 30, 11:50 UTCJun 30, 12:30 UTC40m
2026-06-30 STW197 - Jun 30, 07:40 UTCJun 30, 09:05 UTC1h 25m
2026-06-29 STW063 - Jun 29, 16:55 UTCJun 30, 03:55 UTC11h 1m
2026-06-29 STW358 - Jun 29, 11:25 UTCJun 29, 13:39 UTC2h 15m
2026-06-29 STW358 GSV → GSV Jun 29, 10:00 UTCJun 29, 10:04 UTC5m
2026-06-29 STW357 - Jun 29, 05:15 UTCJun 29, 06:59 UTC1h 45m
2026-06-28 STW063 - Jun 28, 15:29 UTCJun 29, 01:34 UTC10h 5m
2026-06-28 STW063 - Jun 28, 14:34 UTCJun 28, 14:54 UTC20m
2026-06-28 STW198 AER → AYT Jun 28, 11:04 UTCJun 28, 11:39 UTC35m
2026-06-28 STW197 - Jun 28, 06:55 UTCJun 28, 08:14 UTC1h 20m
2026-06-27 STW123 IST → ZIA Jun 27, 18:29 UTCJun 28, 03:35 UTC9h 5m
2026-06-27 STW171 DLM → SVO Jun 27, 06:40 UTCJun 27, 15:39 UTC9h 0m
2026-06-26 STW172 SVO → DLM Jun 26, 17:40 UTCJun 27, 02:29 UTC8h 50m
2026-06-26 STW173 - Jun 26, 06:54 UTCJun 26, 16:05 UTC9h 10m
2026-06-25 STW063 AYT → AYT Jun 25, 16:24 UTCJun 26, 03:29 UTC11h 5m
2026-06-25 STW358 - Jun 25, 11:44 UTCJun 25, 13:55 UTC2h 10m

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

Mode-S 4B9E4B frequently asked

What is Mode-S code 4B9E4B?
4B9E4B is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-GRK.
Where is Mode-S 4B9E4B registered?
Mode-S code 4B9E4B is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B9E4B broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B9E4B, octal 22717113, decimal 4,955,723.
What flights does 4B9E4B operate?
Mode-S 4B9E4B has broadcast 20 distinct callsigns, including STW322, STW321, STW383, STW040, STW039.