Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

4BA953

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-JJS · BOEING 777-300ER

Hex
4BA953
Octal
22724523
Decimal
4,958,547
Country
TR
Tail
TC-JJS
Type
B77W
No current signal · last broadcast 3h ago
Flights observed
220
Distinct callsigns
20
Country
TR
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 4BA953.

Country allocation

The ICAO 24-bit address 4BA953 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
THY90 - 17 2026-07-06
THY91 Turkish Airlines 14 2026-07-07
THY77J - 9 2026-07-08
THY99D - 8 2026-07-09
THY89 - 8 2026-07-10
THY21 - 8 2026-07-13
THY199 - 8 2026-06-22
THY88 - 7 2026-07-10
THY73 - 7 2026-07-02
THY20 Turkish Airlines 7 2026-07-17
THY8XS - 5 2026-07-11
THY1 Turkish Airlines 5 2026-07-07
THY71 Turkish Airlines 4 2026-05-13
THY70 Turkish Airlines 4 2026-05-13
THY3YH Turkish Airlines 4 2026-06-10
THY2NP Turkish Airlines 4 2026-06-10
THY2 - 4 2026-07-08
THY198 - 4 2026-06-21
THY9 Turkish Airlines 3 2026-06-10
THY8LV - 3 2026-07-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 THY20 IST → ICN Jul 17, 22:40 UTCJul 17, 23:00 UTC20m
2026-07-17 THY20 IST → ICN Jul 17, 14:20 UTCJul 17, 21:55 UTC7h 35m
2026-07-15 THY4 - Jul 15, 18:05 UTCJul 16, 03:05 UTC9h 0m
2026-07-15 THY3 - Jul 15, 04:45 UTCJul 15, 14:55 UTC10h 10m
2026-07-15 THY85 - Jul 15, 00:40 UTCJul 15, 01:00 UTC20m
2026-07-14 THY85 - Jul 14, 13:50 UTCJul 15, 00:10 UTC10h 19m
2026-07-13 THY84 - Jul 13, 23:55 UTCJul 14, 11:00 UTC11h 5m
2026-07-13 THY4BV - Jul 13, 18:30 UTCJul 13, 20:25 UTC1h 55m
2026-07-13 THY6EK - Jul 13, 14:25 UTCJul 13, 16:35 UTC2h 10m
2026-07-13 THY21 - Jul 13, 09:55 UTCJul 13, 12:10 UTC2h 15m
2026-07-13 THY21 - Jul 13, 01:40 UTCJul 13, 01:55 UTC15m
2026-07-12 THY20 - Jul 12, 22:55 UTCJul 12, 23:15 UTC20m
2026-07-12 THY20 - Jul 12, 14:25 UTCJul 12, 22:00 UTC7h 35m
2026-07-12 THY6 - Jul 12, 01:20 UTCJul 12, 11:20 UTC10h 0m
2026-07-11 THY5 - Jul 11, 12:15 UTCJul 11, 22:55 UTC10h 40m
2026-07-11 THY8XS - Jul 11, 08:35 UTCJul 11, 09:35 UTC1h 0m
2026-07-11 THY8HX - Jul 11, 05:45 UTCJul 11, 06:40 UTC55m
2026-07-10 THY89 - Jul 10, 17:15 UTCJul 11, 02:35 UTC9h 20m
2026-07-10 THY88 - Jul 10, 06:55 UTCJul 10, 07:20 UTC25m
2026-07-09 THY88 - Jul 9, 23:20 UTCJul 10, 01:05 UTC1h 45m
2026-07-09 THY99D - Jul 9, 10:50 UTCJul 9, 14:30 UTC3h 40m
2026-07-09 THY99D - Jul 9, 03:30 UTCJul 9, 06:55 UTC3h 25m
2026-07-08 THY77J - Jul 8, 13:40 UTCJul 9, 00:45 UTC11h 5m
2026-07-08 THY2 - Jul 8, 00:20 UTCJul 8, 09:30 UTC9h 10m
2026-07-07 THY1 IST → JFK Jul 7, 11:55 UTCJul 7, 21:55 UTC10h 0m
2026-07-07 THY91 ICN → IST Jul 7, 00:40 UTCJul 7, 00:50 UTC10m
2026-07-06 THY91 ICN → IST Jul 6, 14:20 UTCJul 6, 23:50 UTC9h 30m
2026-07-06 THY90 - Jul 6, 07:55 UTCJul 6, 08:15 UTC20m
2026-07-05 THY90 - Jul 5, 23:05 UTCJul 6, 07:00 UTC7h 55m
2026-07-05 THY76Y - Jul 5, 04:00 UTCJul 5, 14:40 UTC10h 40m
2026-07-04 THY75D IST → YVR Jul 4, 13:50 UTCJul 5, 01:35 UTC11h 45m
2026-07-04 THY2 - Jul 4, 02:00 UTCJul 4, 10:40 UTC8h 40m
2026-07-03 THY1 IST → JFK Jul 3, 12:30 UTCJul 3, 22:30 UTC10h 0m
2026-07-02 THY73 - Jul 2, 06:15 UTCJul 2, 20:20 UTC14h 5m
2026-07-01 THY73 - Jul 1, 23:45 UTCJul 2, 20:20 UTC20h 35m
2026-07-01 THY8LV - Jul 1, 03:00 UTCJul 1, 12:20 UTC9h 20m
2026-06-30 THY1GJ VKO → ESB Jun 30, 14:55 UTCJul 1, 00:40 UTC9h 45m
2026-06-30 THY3ES - Jun 30, 09:35 UTCJun 30, 11:55 UTC2h 20m
2026-06-30 THY9FP - Jun 30, 04:25 UTCJun 30, 06:30 UTC2h 5m
2026-06-29 THY3MJ - Jun 29, 11:04 UTCJun 29, 14:25 UTC3h 20m
2026-06-29 THY30S - Jun 29, 05:20 UTCJun 29, 08:24 UTC3h 5m
2026-06-28 THY99D - Jun 28, 03:19 UTCJun 28, 13:59 UTC10h 40m
2026-06-27 THY77J - Jun 27, 13:04 UTCJun 28, 00:39 UTC11h 35m
2026-06-27 THY4HE - Jun 27, 09:24 UTCJun 27, 10:19 UTC55m
2026-06-27 THY7SJ - Jun 27, 06:54 UTCJun 27, 07:34 UTC40m
2026-06-27 THY4EN - Jun 27, 01:09 UTCJun 27, 02:29 UTC1h 20m
2026-06-26 THY5LB - Jun 26, 22:10 UTCJun 26, 23:25 UTC1h 15m
2026-06-26 THY6FL - Jun 26, 12:44 UTCJun 26, 15:34 UTC2h 50m
2026-06-26 THY7WT - Jun 26, 04:59 UTCJun 26, 07:45 UTC2h 45m
2026-06-26 THY27 PVG → IST Jun 26, 01:24 UTCJun 26, 01:45 UTC20m

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

Mode-S 4BA953 frequently asked

What is Mode-S code 4BA953?
4BA953 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-JJS.
Where is Mode-S 4BA953 registered?
Mode-S code 4BA953 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BA953 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 4BA953, octal 22724523, decimal 4,958,547.
What flights does 4BA953 operate?
Mode-S 4BA953 has broadcast 20 distinct callsigns, including THY90, THY91, THY77J, THY99D, THY89.