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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 Jul 26, 18:05 UTC
Flights observed
220
Distinct callsigns
20
Country
TR
Last broadcast
Jul 26, 18:05 UTC

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
THY9SB - 10 2026-07-17
THY0AG Turkish Airlines 8 2026-07-23
THY91S - 7 2026-07-14
THY5CW - 7 2026-07-08
THY20N Turkish Airlines 7 2026-07-04
THY9NY - 6 2026-07-11
THY4TL - 6 2026-07-04
THY8YF - 5 2026-07-02
THY7SV - 5 2026-07-11
THY5FD - 5 2026-07-14
THY4TZ - 5 2026-07-20
THY4EC - 5 2026-07-10
THY4CQ Turkish Airlines 5 2026-07-24
THY3UJ Turkish Airlines 5 2026-07-25
THY2SK - 5 2026-07-17
THY1NA - 5 2026-07-14
THY9QZ - 4 2026-06-28
THY9HB Turkish Airlines 4 2026-07-20
THY8KT Turkish Airlines 4 2026-07-26
THY8GN Turkish Airlines 4 2026-07-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 THY2UH MAN → IST Jul 26, 16:35 UTCJul 26, 18:05 UTC1h 30m
2026-07-26 THY5RA GVA → IST Jul 26, 13:45 UTCJul 26, 15:00 UTC1h 15m
2026-07-26 THY8KT OSL → IST Jul 26, 05:50 UTCJul 26, 10:20 UTC4h 31m
2026-07-25 THY3UJ VAN → IST Jul 25, 14:50 UTCJul 25, 19:40 UTC4h 50m
2026-07-25 THY2NC MSR → IST Jul 25, 05:40 UTCJul 25, 10:55 UTC5h 15m
2026-07-24 THY4CQ MQM → IST Jul 24, 14:40 UTCJul 24, 18:50 UTC4h 10m
2026-07-24 THY30Q - Jul 24, 08:30 UTCJul 24, 13:10 UTC4h 40m
2026-07-24 THY2CE KYA → IST Jul 24, 05:55 UTCJul 24, 06:40 UTC45m
2026-07-23 THY2BN IST → KYA Jul 23, 23:25 UTCJul 24, 00:00 UTC35m
2026-07-23 THY6HJ - Jul 23, 18:15 UTCJul 23, 19:25 UTC1h 10m
2026-07-23 THY1TE - Jul 23, 16:05 UTCJul 23, 16:30 UTC25m
2026-07-23 THY0AG TBS → IST Jul 23, 11:05 UTCJul 23, 14:05 UTC3h 0m
2026-07-23 THY2NC MSR → IST Jul 23, 03:30 UTCJul 23, 07:55 UTC4h 25m
2026-07-22 THY3EW - Jul 22, 13:40 UTCJul 22, 16:30 UTC2h 50m
2026-07-20 THY94N BOD → IST Jul 20, 15:10 UTCJul 20, 15:40 UTC30m
2026-07-20 THY8GN MLX → IST Jul 20, 09:30 UTCJul 20, 13:20 UTC3h 50m
2026-07-20 THY4TZ - Jul 20, 06:10 UTCJul 20, 07:35 UTC1h 25m
2026-07-20 THY9HB IST → ERZ Jul 20, 03:20 UTCJul 20, 03:50 UTC30m
2026-07-19 THY8JA - Jul 19, 18:05 UTCJul 19, 18:35 UTC30m
2026-07-19 THY3EW - Jul 19, 13:35 UTCJul 19, 16:30 UTC2h 55m
2026-07-18 THY3AH - Jul 18, 11:30 UTCJul 18, 15:00 UTC3h 30m
2026-07-18 THY2AW - Jul 18, 08:05 UTCJul 18, 09:25 UTC1h 20m
2026-07-18 THY1WU IST → ERC Jul 18, 05:30 UTCJul 18, 06:30 UTC1h 0m
2026-07-17 THY2UH - Jul 17, 17:50 UTCJul 17, 18:29 UTC40m
2026-07-17 THY2UH - Jul 17, 16:44 UTCJul 17, 17:09 UTC25m
2026-07-17 THY5RA - Jul 17, 14:00 UTCJul 17, 15:05 UTC1h 5m
2026-07-17 THY9SB - Jul 17, 08:40 UTCJul 17, 11:30 UTC2h 50m
2026-07-17 THY2SK - Jul 17, 03:20 UTCJul 17, 07:20 UTC4h 0m
2026-07-16 THY3ZB - Jul 16, 11:25 UTCJul 16, 16:05 UTC4h 40m
2026-07-16 THY4SV - Jul 16, 03:20 UTCJul 16, 07:10 UTC3h 50m
2026-07-15 THY7UJ - Jul 15, 10:05 UTCJul 15, 10:25 UTC20m
2026-07-15 THY60R - Jul 15, 05:40 UTCJul 15, 09:15 UTC3h 35m
2026-07-14 THY91S - Jul 14, 18:35 UTCJul 14, 19:35 UTC1h 0m
2026-07-14 THY1NA - Jul 14, 16:25 UTCJul 14, 16:55 UTC30m
2026-07-14 THY5FD - Jul 14, 13:05 UTCJul 14, 13:20 UTC15m
2026-07-14 THY8GQ - Jul 14, 09:45 UTCJul 14, 10:10 UTC25m
2026-07-14 THY2SK - Jul 14, 03:20 UTCJul 14, 07:05 UTC3h 45m
2026-07-13 THY8GN - Jul 13, 09:30 UTCJul 13, 13:30 UTC4h 0m
2026-07-13 THY3CH - Jul 13, 03:40 UTCJul 13, 07:40 UTC4h 0m
2026-07-12 THY3UJ - Jul 12, 19:01 UTCJul 12, 19:20 UTC20m
2026-07-12 THY2MB - Jul 12, 14:40 UTCJul 12, 15:10 UTC30m
2026-07-12 THY8KY - Jul 12, 08:25 UTCJul 12, 12:25 UTC4h 0m
2026-07-11 THY91S - Jul 11, 18:35 UTCJul 11, 19:25 UTC50m
2026-07-11 THY1NA - Jul 11, 16:50 UTCJul 11, 17:00 UTC10m
2026-07-11 THY9LV - Jul 11, 13:40 UTCJul 11, 14:20 UTC40m
2026-07-11 THY9ZN - Jul 11, 11:30 UTCJul 11, 12:00 UTC30m
2026-07-11 THY7SV - Jul 11, 08:55 UTCJul 11, 09:05 UTC10m
2026-07-11 THY9NY - Jul 11, 05:35 UTCJul 11, 06:01 UTC25m
2026-07-10 THY1ED - Jul 10, 18:45 UTCJul 10, 19:30 UTC45m
2026-07-10 THY1ZH - Jul 10, 16:40 UTCJul 10, 17:05 UTC25m

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 Jul 26, 18:05 UTC.
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 THY9SB, THY0AG, THY91S, THY5CW, THY20N.