Apparatus

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sensors Mode-S transponder

4BA949

ICAO 24-bit transponder address · allocated to Turkey

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

Hex
4BA949
Octal
22724511
Decimal
4,958,537
Country
TR
Tail
TC-JJI
Type
B77W
No current signal · last broadcast 1h ago
Flights observed
213
Distinct callsigns
20
Country
TR
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 4BA949.

Country allocation

The ICAO 24-bit address 4BA949 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
THY73 - 10 2026-06-27
THY27 - 9 2026-07-08
THY8 - 8 2026-07-10
THY7 - 8 2026-07-09
THY199 - 8 2026-06-23
THY198 - 8 2026-06-22
THY9 Turkish Airlines 6 2026-06-05
THY89 Turkish Airlines 6 2026-05-18
THY1 Turkish Airlines 6 2026-05-03
THY72 Turkish Airlines 5 2026-06-26
THY26 - 5 2026-07-07
THY2 Turkish Airlines 5 2026-05-04
THY11 Turkish Airlines 5 2026-07-06
THY10 Turkish Airlines 5 2026-06-06
THY90 - 4 2026-07-04
THY8FW - 4 2026-06-24
THY88 Turkish Airlines 4 2026-05-18
THY71 Turkish Airlines 4 2026-05-25
THY70 Turkish Airlines 4 2026-05-25
THY6KL - 4 2026-06-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 THY77J - Jul 13, 13:00 UTCJul 14, 00:15 UTC11h 15m
2026-07-13 THY66C - Jul 13, 08:25 UTCJul 13, 09:15 UTC50m
2026-07-13 THY5AB - Jul 13, 05:35 UTCJul 13, 06:25 UTC50m
2026-07-12 THY85 - Jul 12, 13:45 UTCJul 13, 00:10 UTC10h 25m
2026-07-11 THY84 - Jul 11, 23:55 UTCJul 12, 10:55 UTC11h 0m
2026-07-11 THY3RU - Jul 11, 16:10 UTCJul 11, 19:50 UTC3h 40m
2026-07-11 THY5RM - Jul 11, 09:30 UTCJul 11, 13:35 UTC4h 5m
2026-07-10 THY4YH - Jul 10, 19:00 UTCJul 10, 19:40 UTC40m
2026-07-10 THY80E - Jul 10, 16:30 UTCJul 10, 17:05 UTC35m
2026-07-10 THY8 - Jul 10, 03:40 UTCJul 10, 12:45 UTC9h 5m
2026-07-09 THY7 - Jul 9, 14:25 UTCJul 10, 01:10 UTC10h 45m
2026-07-09 THY8NK - Jul 9, 09:20 UTCJul 9, 11:35 UTC2h 15m
2026-07-09 THY7JV - Jul 9, 04:25 UTCJul 9, 06:50 UTC2h 25m
2026-07-08 THY27 - Jul 8, 16:15 UTCJul 9, 00:45 UTC8h 30m
2026-07-08 THY27 - Jul 8, 00:20 UTCJul 9, 00:15 UTC23h 55m
2026-07-07 THY26 - Jul 7, 23:20 UTCJul 8, 20:20 UTC21h 0m
2026-07-07 THY12 - Jul 7, 06:05 UTCJul 7, 14:50 UTC8h 45m
2026-07-06 THY11 IST → JFK Jul 6, 16:20 UTCJul 7, 02:40 UTC10h 20m
2026-07-06 THY8LV - Jul 6, 02:50 UTCJul 6, 11:55 UTC9h 5m
2026-07-05 THY1GJ VKO → ESB Jul 5, 14:25 UTCJul 6, 00:30 UTC10h 5m
2026-07-05 THY91 ICN → IST Jul 5, 06:20 UTCJul 5, 06:30 UTC10m
2026-07-04 THY91 ICN → IST Jul 4, 20:15 UTCJul 5, 05:30 UTC9h 15m
2026-07-04 THY90 - Jul 4, 08:10 UTCJul 4, 08:35 UTC25m
2026-07-03 THY90 - Jul 3, 23:30 UTCJul 4, 07:20 UTC7h 50m
2026-07-03 THY6 - Jul 3, 07:20 UTCJul 3, 16:30 UTC9h 10m
2026-07-02 THY5 IST → ORD Jul 2, 12:15 UTCJul 2, 23:10 UTC10h 55m
2026-07-02 THY2NP - Jul 2, 07:55 UTCJul 2, 08:45 UTC50m
2026-07-02 THY3YH - Jul 2, 05:30 UTCJul 2, 06:00 UTC30m
2026-07-01 THY85 - Jul 1, 13:50 UTCJul 2, 00:10 UTC10h 20m
2026-06-30 THY84 - Jun 30, 23:30 UTCJul 1, 10:15 UTC10h 45m
2026-06-30 THY8 - Jun 30, 01:55 UTCJun 30, 11:10 UTC9h 15m
2026-06-29 THY7 IST → IAD Jun 29, 13:59 UTCJun 29, 23:54 UTC9h 55m
2026-06-29 THY8 - Jun 29, 02:00 UTCJun 29, 11:04 UTC9h 5m
2026-06-28 THY7 IST → IAD Jun 28, 13:19 UTCJun 28, 23:29 UTC10h 10m
2026-06-27 THY73 - Jun 27, 16:04 UTCJun 28, 01:44 UTC9h 40m
2026-06-26 THY72 IST → CAN Jun 26, 22:49 UTCJun 27, 05:49 UTC7h 0m
2026-06-26 THY12 - Jun 26, 05:39 UTCJun 26, 14:35 UTC8h 55m
2026-06-25 THY11 IST → JFK Jun 25, 16:45 UTCJun 26, 02:50 UTC10h 5m
2026-06-25 THY6 - Jun 25, 03:04 UTCJun 25, 12:50 UTC9h 45m
2026-06-24 THY5 IST → ORD Jun 24, 12:14 UTCJun 24, 22:45 UTC10h 30m
2026-06-24 THY6KL - Jun 24, 07:59 UTCJun 24, 09:05 UTC1h 5m
2026-06-24 THY8FW - Jun 24, 04:55 UTCJun 24, 05:54 UTC1h 0m
2026-06-23 THY199 - Jun 23, 13:00 UTCJun 24, 00:20 UTC11h 20m
2026-06-22 THY198 - Jun 22, 23:29 UTCJun 23, 09:49 UTC10h 20m
2026-06-22 THY21 - Jun 22, 01:25 UTCJun 22, 12:25 UTC11h 0m
2026-06-21 THY20 IST → ICN Jun 21, 22:40 UTCJun 21, 23:05 UTC25m
2026-06-21 THY20 IST → ICN Jun 21, 14:15 UTCJun 21, 22:00 UTC7h 45m
2026-06-21 THY6 - Jun 21, 01:30 UTCJun 21, 11:20 UTC9h 50m
2026-06-20 THY5 IST → ORD Jun 20, 12:14 UTCJun 20, 22:45 UTC10h 30m
2026-06-20 THY2YR BEY → IST Jun 20, 07:34 UTCJun 20, 08:59 UTC1h 25m

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

Mode-S 4BA949 frequently asked

What is Mode-S code 4BA949?
4BA949 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-JJI.
Where is Mode-S 4BA949 registered?
Mode-S code 4BA949 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BA949 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BA949, octal 22724511, decimal 4,958,537.
What flights does 4BA949 operate?
Mode-S 4BA949 has broadcast 20 distinct callsigns, including THY73, THY27, THY8, THY7, THY199.