Apparatus

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sensors Mode-S transponder

4BA952

ICAO 24-bit transponder address · allocated to Turkey

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

Hex
4BA952
Octal
22724522
Decimal
4,958,546
Country
TR
Tail
TC-JJR
Type
B77W
No current signal · last broadcast 2h ago
Flights observed
118
Distinct callsigns
20
Country
TR
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 4BA952.

Country allocation

The ICAO 24-bit address 4BA952 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
THY55 Turkish Airlines 5 2026-06-29
THY54 - 5 2026-06-27
THY26 - 5 2026-06-22
THY89 Turkish Airlines 4 2026-06-19
THY85 - 4 2026-07-04
THY84 - 4 2026-07-03
THY8 - 4 2026-06-27
THY7 Turkish Airlines 4 2026-06-26
THY21 - 4 2026-06-12
THY9 Turkish Airlines 3 2026-07-04
THY88 Turkish Airlines 3 2026-06-17
THY27 Turkish Airlines 3 2026-06-23
THY20 Turkish Airlines 3 2026-06-11
THY91 Turkish Airlines 2 2026-05-26
THY90 Turkish Airlines 2 2026-05-25
THY8XS - 2 2026-07-04
THY8LV - 2 2026-06-24
THY8HX - 2 2026-07-04
THY77J - 2 2026-06-21
THY73 - 2 2026-06-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-04 THY9 IST → LAX Jul 4, 13:10 UTCJul 4, 20:20 UTC7h 10m
2026-07-04 THY8XS - Jul 4, 09:15 UTCJul 4, 10:25 UTC1h 10m
2026-07-04 THY8HX - Jul 4, 05:50 UTCJul 4, 06:45 UTC55m
2026-07-04 THY85 - Jul 4, 01:10 UTCJul 4, 01:20 UTC10m
2026-07-03 THY85 - Jul 3, 13:25 UTCJul 4, 00:25 UTC11h 0m
2026-07-03 THY84 - Jul 3, 00:45 UTCJul 3, 10:40 UTC9h 55m
2026-07-02 THY84 - Jul 2, 23:35 UTCJul 3, 00:00 UTC25m
2026-07-02 THY10 LAX → IST Jul 2, 03:25 UTCJul 2, 15:35 UTC12h 10m
2026-07-01 THY9 IST → LAX Jul 1, 12:00 UTCJul 2, 00:30 UTC12h 30m
2026-07-01 THY2NP - Jul 1, 08:00 UTCJul 1, 08:45 UTC45m
2026-07-01 THY3YH - Jul 1, 05:20 UTCJul 1, 05:55 UTC35m
2026-07-01 THY199 - Jul 1, 00:35 UTCJul 1, 00:55 UTC20m
2026-06-30 THY199 - Jun 30, 12:50 UTCJun 30, 15:55 UTC3h 5m
2026-06-29 THY198 - Jun 29, 23:34 UTCJun 30, 10:05 UTC10h 31m
2026-06-29 THY3RU CMN → IST Jun 29, 16:04 UTCJun 29, 20:09 UTC4h 5m
2026-06-29 THY5RM - Jun 29, 09:29 UTCJun 29, 13:39 UTC4h 10m
2026-06-29 THY55 SIN → IST Jun 29, 03:29 UTCJun 29, 03:49 UTC20m
2026-06-28 THY55 SIN → IST Jun 28, 17:39 UTCJun 29, 02:54 UTC9h 15m
2026-06-27 THY54 - Jun 27, 23:14 UTCJun 28, 09:20 UTC10h 5m
2026-06-27 THY4YH - Jun 27, 19:00 UTCJun 27, 19:34 UTC35m
2026-06-27 THY80E - Jun 27, 16:44 UTCJun 27, 17:14 UTC30m
2026-06-27 THY8 - Jun 27, 01:59 UTCJun 27, 11:09 UTC9h 10m
2026-06-26 THY7 IST → IAD Jun 26, 13:15 UTCJun 26, 23:34 UTC10h 20m
2026-06-26 THY8XS - Jun 26, 09:05 UTCJun 26, 09:50 UTC45m
2026-06-26 THY8HX - Jun 26, 05:50 UTCJun 26, 06:19 UTC30m
2026-06-26 THY73 - Jun 26, 02:40 UTCJun 26, 03:00 UTC20m
2026-06-25 THY73 - Jun 25, 16:55 UTCJun 26, 02:05 UTC9h 10m
2026-06-24 THY72 IST → CAN Jun 24, 23:04 UTCJun 25, 07:45 UTC8h 40m
2026-06-24 THY8LV - Jun 24, 02:40 UTCJun 24, 11:45 UTC9h 5m
2026-06-23 THY1GJ VKO → ESB Jun 23, 14:15 UTCJun 24, 00:15 UTC10h 0m
2026-06-23 THY27 PVG → IST Jun 23, 01:50 UTCJun 23, 02:04 UTC15m
2026-06-22 THY26 - Jun 22, 00:34 UTCJun 22, 20:19 UTC19h 45m
2026-06-21 THY26 - Jun 21, 23:10 UTCJun 22, 20:19 UTC21h 10m
2026-06-21 THY99D - Jun 21, 06:50 UTCJun 21, 17:20 UTC10h 30m
2026-06-21 THY77J - Jun 21, 04:04 UTCJun 21, 04:30 UTC25m
2026-06-20 THY77J - Jun 20, 13:04 UTCJun 21, 00:55 UTC11h 50m
2026-06-20 THY2 - Jun 20, 00:59 UTCJun 20, 10:04 UTC9h 5m
2026-06-19 THY1 IST → JFK Jun 19, 11:39 UTCJun 19, 21:49 UTC10h 10m
2026-06-19 THY2RC - Jun 19, 07:04 UTCJun 19, 07:54 UTC50m
2026-06-19 THY5JA - Jun 19, 04:19 UTCJun 19, 05:05 UTC45m
2026-06-19 THY89 PEK → IST Jun 19, 01:34 UTCJun 19, 01:45 UTC10m
2026-06-18 THY89 PEK → IST Jun 18, 23:35 UTCJun 19, 00:45 UTC1h 9m
2026-06-18 THY89 PEK → IST Jun 18, 00:35 UTCJun 19, 00:29 UTC23h 54m
2026-06-17 THY88 IST → PEK Jun 17, 23:00 UTCJun 18, 00:45 UTC1h 45m
2026-06-17 THY12 - Jun 17, 04:55 UTCJun 17, 13:40 UTC8h 45m
2026-06-16 THY11 IST → JFK Jun 16, 16:30 UTCJun 17, 02:25 UTC9h 56m
2026-06-16 THY8LV - Jun 16, 03:15 UTCJun 16, 12:45 UTC9h 30m
2026-06-15 THY1GJ VKO → ESB Jun 15, 14:40 UTCJun 16, 00:45 UTC10h 5m
2026-06-15 THY8 - Jun 15, 02:24 UTCJun 15, 11:45 UTC9h 20m
2026-06-14 THY7 IST → IAD Jun 14, 13:20 UTCJun 15, 00:15 UTC10h 55m

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

Mode-S 4BA952 frequently asked

What is Mode-S code 4BA952?
4BA952 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-JJR.
Where is Mode-S 4BA952 registered?
Mode-S code 4BA952 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BA952 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BA952, octal 22724522, decimal 4,958,546.
What flights does 4BA952 operate?
Mode-S 4BA952 has broadcast 20 distinct callsigns, including THY55, THY54, THY26, THY89, THY85.