Apparatus

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sensors Mode-S transponder

4BAA99

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-JTY

Hex
4BAA99
Octal
22725231
Decimal
4,958,873
Country
TR
Tail
TC-JTY
Type
A320
No current signal · last broadcast 2h ago
Flights observed
77
Distinct callsigns
20
Country
TR
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 4BAA99.

Country allocation

The ICAO 24-bit address 4BAA99 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
THY9NY Turkish Airlines 5 2026-06-01
THY8BN Turkish Airlines 4 2026-06-01
THY7SV Turkish Airlines 4 2026-06-01
THY5FD Turkish Airlines 4 2026-05-28
THY0AG Turkish Airlines 4 2026-06-01
THY91S Turkish Airlines 3 2026-06-02
THY5CW Turkish Airlines 3 2026-05-27
THY9SB Turkish Airlines 2 2026-05-25
THY8YF Turkish Airlines 2 2026-05-26
THY8GQ Turkish Airlines 2 2026-05-28
THY5KB Turkish Airlines 2 2026-05-25
THY4PW Turkish Airlines 2 2026-06-01
THY4EC Turkish Airlines 2 2026-05-26
THY3ZB - 2 2026-05-18
THY3UJ Turkish Airlines 2 2026-05-24
THY3MD Turkish Airlines 2 2026-05-25
THY2SK Turkish Airlines 2 2026-06-03
THY20N Turkish Airlines 2 2026-04-23
THY1ZH Turkish Airlines 2 2026-05-17
THY1NA Turkish Airlines 2 2026-05-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-03 THY7YR IST → NKT Jun 3, 11:35 UTCJun 3, 12:00 UTC25m
2026-06-03 THY2SK STR → ESB Jun 3, 03:20 UTCJun 3, 07:10 UTC3h 50m
2026-06-02 THY91S KYA → IST Jun 2, 16:25 UTCJun 2, 19:50 UTC3h 25m
2026-06-02 THY2583 TJK → IST Jun 2, 05:50 UTCJun 2, 09:10 UTC3h 20m
2026-06-01 THY8BN ERZ → IST Jun 1, 20:40 UTCJun 1, 21:05 UTC25m
2026-06-01 THY8BN ERZ → IST Jun 1, 19:35 UTCJun 1, 20:00 UTC25m
2026-06-01 THY4PW TRN → IST Jun 1, 16:45 UTCJun 1, 17:55 UTC1h 10m
2026-06-01 THY0AG TBS → IST Jun 1, 11:10 UTCJun 1, 14:10 UTC3h 0m
2026-06-01 THY7SV IST → MUC Jun 1, 08:05 UTCJun 1, 09:30 UTC1h 25m
2026-06-01 THY9NY IST → AYT Jun 1, 06:55 UTCJun 1, 07:05 UTC10m
2026-06-01 THY9NY IST → AYT Jun 1, 05:45 UTCJun 1, 06:15 UTC30m
2026-05-31 THY91S KYA → IST May 31, 16:55 UTCMay 31, 20:00 UTC3h 5m
2026-05-31 THY9LV KYA → IST May 31, 11:40 UTCMay 31, 15:05 UTC3h 25m
2026-05-31 THY2AW IST → ERZ May 31, 08:45 UTCMay 31, 09:25 UTC40m
2026-05-30 THY9QZ ADF → IST May 30, 14:45 UTCMay 30, 18:35 UTC3h 50m
2026-05-30 THY8KY ADF → IST May 30, 08:30 UTCMay 30, 12:30 UTC4h 0m
2026-05-29 THY2UH MAN → IST May 29, 16:10 UTCMay 29, 17:50 UTC1h 40m
2026-05-29 THY5RA GVA → IST May 29, 13:20 UTCMay 29, 14:30 UTC1h 10m
2026-05-29 THY7UJ IST → OSL May 29, 05:25 UTCMay 29, 10:25 UTC5h 0m
2026-05-28 THY1RK GNY → IST May 28, 15:10 UTCMay 28, 19:10 UTC4h 0m
2026-05-28 THY5FD TJK → IST May 28, 11:55 UTCMay 28, 12:15 UTC20m
2026-05-28 THY5FD TJK → IST May 28, 10:50 UTCMay 28, 10:55 UTC5m
2026-05-28 THY8GQ IST → NUE May 28, 09:40 UTCMay 28, 10:10 UTC30m
2026-05-28 THY2SK STR → ESB May 28, 03:15 UTCMay 28, 07:20 UTC4h 5m
2026-05-27 THY5CW IST → NAV May 27, 08:40 UTCMay 27, 08:50 UTC10m
2026-05-26 THY1MF ERZ → IST May 26, 18:50 UTCMay 26, 18:59 UTC10m
2026-05-26 THY0AC BER → IST May 26, 16:24 UTCMay 26, 16:35 UTC10m
2026-05-26 THY0AG TBS → IST May 26, 14:14 UTCMay 26, 14:24 UTC10m
2026-05-26 THY8YF BHX → IST May 26, 11:39 UTCMay 26, 11:50 UTC10m
2026-05-26 THY4EC NAV → IST May 26, 08:04 UTCMay 26, 08:15 UTC10m
2026-05-26 THY7VD - May 26, 05:30 UTCMay 26, 05:40 UTC10m
2026-05-25 THY5KB IST → VNO May 25, 18:40 UTCMay 25, 18:50 UTC10m
2026-05-25 THY5KB IST → VNO May 25, 17:30 UTCMay 25, 17:45 UTC15m
2026-05-25 THY9SB NAV → IST May 25, 11:20 UTCMay 25, 11:30 UTC10m
2026-05-25 THY5CW IST → NAV May 25, 08:40 UTCMay 25, 08:50 UTC10m
2026-05-25 THY3MD AYT → IST May 25, 03:50 UTCMay 25, 06:45 UTC2h 55m
2026-05-24 THY3UJ VAN → IST May 24, 18:50 UTCMay 24, 19:00 UTC10m
2026-05-24 THY3UJ VAN → IST May 24, 17:45 UTCMay 24, 18:00 UTC15m
2026-05-24 THY9SB NAV → IST May 24, 11:20 UTCMay 24, 11:30 UTC10m
2026-05-23 THY8BN ERZ → IST May 23, 15:05 UTCMay 23, 15:15 UTC10m
2026-05-23 THY8BN ERZ → IST May 23, 13:50 UTCMay 23, 14:05 UTC15m
2026-05-23 THY4PW TRN → IST May 23, 11:00 UTCMay 23, 11:10 UTC10m
2026-05-23 THY7SV IST → MUC May 23, 08:00 UTCMay 23, 08:15 UTC15m
2026-05-23 THY9NY IST → AYT May 23, 05:45 UTCMay 23, 05:55 UTC10m
2026-05-22 THY91S KYA → IST May 22, 19:00 UTCMay 22, 19:10 UTC10m
2026-05-22 THY1NA IST → KYA May 22, 16:30 UTCMay 22, 16:50 UTC20m
2026-05-22 THY0AG TBS → IST May 22, 13:35 UTCMay 22, 13:45 UTC10m
2026-05-22 THY8YF BHX → IST May 22, 11:05 UTCMay 22, 11:15 UTC10m
2026-05-22 THY4EC NAV → IST May 22, 08:10 UTCMay 22, 08:20 UTC10m
2026-05-21 THY1MF ERZ → IST May 21, 19:00 UTCMay 21, 19:10 UTC10m

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

Mode-S 4BAA99 frequently asked

What is Mode-S code 4BAA99?
4BAA99 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-JTY.
Where is Mode-S 4BAA99 registered?
Mode-S code 4BAA99 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BAA99 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 4BAA99, octal 22725231, decimal 4,958,873.
What flights does 4BAA99 operate?
Mode-S 4BAA99 has broadcast 20 distinct callsigns, including THY9NY, THY8BN, THY7SV, THY5FD, THY0AG.