Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

4BA954

ICAO 24-bit transponder address · allocated to Turkey

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

Hex
4BA954
Octal
22724524
Decimal
4,958,548
Country
TR
Tail
TC-JJT
Type
B77W
No current signal · last broadcast Jul 26, 23:00 UTC
Flights observed
258
Distinct callsigns
20
Country
TR
Last broadcast
Jul 26, 23:00 UTC

Last known position

Most recent position reported by Mode-S 4BA954.

Country allocation

The ICAO 24-bit address 4BA954 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
THY71 Turkish Airlines 13 2026-07-23
THY70 Turkish Airlines 11 2026-07-23
THY91 - 10 2026-07-12
THY8LV Turkish Airlines 10 2026-07-22
THY84 - 10 2026-07-16
THY1GJ - 10 2026-07-21
THY199 - 9 2026-07-10
THY85 - 8 2026-07-17
THY198 - 7 2026-07-08
THY90 - 6 2026-07-12
THY73 Turkish Airlines 5 2026-07-26
THY8HX Turkish Airlines 4 2026-07-20
THY89 - 4 2026-07-13
THY88 - 4 2026-07-13
THY80E Turkish Airlines 4 2026-07-24
THY5 Turkish Airlines 4 2026-07-26
THY4YH Turkish Airlines 4 2026-07-24
THY3YH - 4 2026-06-30
THY2NP - 4 2026-06-30
THY25 - 4 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 THY5 IST → ORD Jul 26, 12:20 UTCJul 26, 23:00 UTC10h 40m
2026-07-26 THY66C GYD → IST Jul 26, 08:15 UTCJul 26, 09:10 UTC55m
2026-07-26 THY5AB IST → BJV Jul 26, 05:30 UTCJul 26, 06:15 UTC45m
2026-07-26 THY73 CAN → IST Jul 26, 01:30 UTCJul 26, 01:50 UTC20m
2026-07-25 THY73 CAN → IST Jul 25, 17:55 UTCJul 26, 00:55 UTC7h 0m
2026-07-25 THY73 CAN → IST Jul 25, 15:50 UTCJul 25, 16:05 UTC15m
2026-07-24 THY72 IST → CAN Jul 24, 22:45 UTCJul 25, 06:20 UTC7h 35m
2026-07-24 THY4YH ADB → IST Jul 24, 19:05 UTCJul 24, 19:50 UTC45m
2026-07-24 THY80E IST → ADB Jul 24, 16:40 UTCJul 24, 17:15 UTC35m
2026-07-24 THY3MJ LHR → IST Jul 24, 10:50 UTCJul 24, 13:50 UTC3h 0m
2026-07-24 THY30S SAW → EBL Jul 24, 05:20 UTCJul 24, 08:50 UTC3h 30m
2026-07-23 THY71 HKG → IST Jul 23, 17:00 UTCJul 24, 00:05 UTC7h 5m
2026-07-23 THY71 HKG → IST Jul 23, 14:55 UTCJul 23, 15:05 UTC10m
2026-07-23 THY70 IST → HKG Jul 23, 08:25 UTCJul 23, 09:00 UTC35m
2026-07-23 THY70 IST → HKG Jul 23, 00:15 UTCJul 23, 06:35 UTC6h 20m
2026-07-22 THY70 IST → HKG Jul 22, 22:55 UTCJul 22, 23:20 UTC25m
2026-07-22 THY8AK - Jul 22, 18:20 UTCJul 22, 19:10 UTC50m
2026-07-22 THY5HS BRU → ISL Jul 22, 15:15 UTCJul 22, 16:00 UTC45m
2026-07-22 THY8LV YYZ → IST Jul 22, 02:50 UTCJul 22, 11:55 UTC9h 5m
2026-07-21 THY1GJ - Jul 21, 14:30 UTCJul 22, 00:30 UTC10h 0m
2026-07-21 THY6 ORD → IST Jul 21, 02:15 UTCJul 21, 11:55 UTC9h 40m
2026-07-20 THY5 - Jul 20, 12:25 UTCJul 20, 23:15 UTC10h 50m
2026-07-20 THY8XS IST → CDG Jul 20, 08:45 UTCJul 20, 09:45 UTC1h 0m
2026-07-20 THY8HX ESB → IST Jul 20, 06:00 UTCJul 20, 06:50 UTC50m
2026-07-19 THY25 - Jul 19, 13:45 UTCJul 20, 01:00 UTC11h 15m
2026-07-18 THY24 - Jul 18, 22:45 UTCJul 19, 10:00 UTC11h 15m
2026-07-18 THY8DP - Jul 18, 17:25 UTCJul 18, 20:00 UTC2h 35m
2026-07-18 THY7AU - Jul 18, 12:30 UTCJul 18, 15:25 UTC2h 55m
2026-07-18 THY8XS - Jul 18, 08:40 UTCJul 18, 09:45 UTC1h 5m
2026-07-18 THY8HX - Jul 18, 05:50 UTCJul 18, 06:45 UTC55m
2026-07-17 THY4 JFK → IST Jul 17, 17:15 UTCJul 18, 02:09 UTC8h 55m
2026-07-17 THY3 - Jul 17, 04:59 UTCJul 17, 15:00 UTC10h 0m
2026-07-17 THY85 - Jul 17, 00:35 UTCJul 17, 00:50 UTC15m
2026-07-16 THY85 - Jul 16, 13:49 UTCJul 16, 23:59 UTC10h 10m
2026-07-16 THY84 - Jul 16, 00:40 UTCJul 16, 10:59 UTC10h 20m
2026-07-15 THY84 - Jul 15, 23:50 UTCJul 16, 00:00 UTC10m
2026-07-15 THY8LV - Jul 15, 02:25 UTCJul 15, 11:50 UTC9h 25m
2026-07-14 THY1GJ - Jul 14, 14:25 UTCJul 15, 00:10 UTC9h 44m
2026-07-14 THY8XS - Jul 14, 08:35 UTCJul 14, 09:30 UTC55m
2026-07-14 THY8HX - Jul 14, 06:05 UTCJul 14, 06:55 UTC50m
2026-07-13 THY89 - Jul 13, 23:25 UTCJul 14, 01:50 UTC2h 25m
2026-07-13 THY88 - Jul 13, 10:10 UTCJul 13, 10:30 UTC20m
2026-07-13 THY88 - Jul 13, 02:50 UTCJul 13, 04:30 UTC1h 40m
2026-07-12 THY91 - Jul 12, 15:35 UTCJul 12, 23:50 UTC8h 15m
2026-07-12 THY91 - Jul 12, 14:25 UTCJul 12, 14:40 UTC15m
2026-07-12 THY90 - Jul 12, 07:55 UTCJul 12, 08:25 UTC30m
2026-07-11 THY90 - Jul 11, 23:10 UTCJul 12, 07:05 UTC7h 55m
2026-07-11 THY32G - Jul 11, 03:05 UTCJul 11, 13:10 UTC10h 5m
2026-07-10 THY31K - Jul 10, 12:40 UTCJul 11, 00:25 UTC11h 45m
2026-07-10 THY2YR - Jul 10, 07:20 UTCJul 10, 08:50 UTC1h 30m

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

Mode-S 4BA954 frequently asked

What is Mode-S code 4BA954?
4BA954 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-JJT.
Where is Mode-S 4BA954 registered?
Mode-S code 4BA954 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BA954 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 23:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BA954, octal 22724524, decimal 4,958,548.
What flights does 4BA954 operate?
Mode-S 4BA954 has broadcast 20 distinct callsigns, including THY71, THY70, THY91, THY8LV, THY84.