Apparatus

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sensors Mode-S transponder

4B9E01

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-GPA · AIRBUS A-321

Hex
4B9E01
Octal
22717001
Decimal
4,955,649
Country
TR
Tail
TC-GPA
Type
A321
No current signal · last broadcast 11d ago
Flights observed
89
Distinct callsigns
16
Country
TR
Last broadcast
11d ago

Last known position

Most recent position reported by Mode-S 4B9E01.

Country allocation

The ICAO 24-bit address 4B9E01 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 16 distinct

Callsign Airline Flights Last seen
KNE254 Nas Air 13 2026-07-24
KNE253 Nas Air 13 2026-07-24
KNE265 Nas Air 11 2026-07-25
KNE263 Nas Air 11 2026-05-26
KNE299 Nas Air 9 2026-07-26
KNE300 Nas Air 6 2026-07-26
KNE303 Nas Air 5 2026-07-26
KNE273 Nas Air 5 2026-07-23
KNE286 Nas Air 3 2026-07-22
KNE285 - 3 2026-07-10
KNE264 Nas Air 3 2026-05-26
KNE274 Nas Air 2 2026-07-23
KNE266 - 2 2026-07-09
KNE272 Nas Air 1 2026-05-23
KNE271 Nas Air 1 2026-05-23
BBT9001 - 1 2026-04-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 KNE300 IST → RUH Jul 26, 18:50 UTCJul 26, 20:30 UTC1h 40m
2026-07-26 KNE299 RUH → IST Jul 26, 08:55 UTCJul 26, 17:05 UTC8h 10m
2026-07-26 KNE303 RUH → TZX Jul 26, 07:15 UTCJul 26, 07:35 UTC20m
2026-07-26 KNE303 RUH → TZX Jul 26, 06:15 UTCJul 26, 06:40 UTC26m
2026-07-25 KNE265 RUH → CAI Jul 25, 20:45 UTCJul 25, 21:00 UTC15m
2026-07-24 KNE254 AMM → RUH Jul 24, 19:55 UTCJul 24, 20:25 UTC30m
2026-07-24 KNE253 RUH → AMM Jul 24, 17:55 UTCJul 24, 18:20 UTC25m
2026-07-23 KNE254 AMM → RUH Jul 23, 20:00 UTCJul 24, 08:30 UTC12h 30m
2026-07-23 KNE253 - Jul 23, 17:55 UTCJul 23, 18:25 UTC30m
2026-07-23 KNE274 CAI → RUH Jul 23, 10:40 UTCJul 23, 10:55 UTC15m
2026-07-23 KNE273 RUH → CAI Jul 23, 08:15 UTCJul 23, 08:35 UTC20m
2026-07-22 KNE265 - Jul 22, 18:45 UTCJul 22, 19:20 UTC35m
2026-07-22 KNE286 SPX → RUH Jul 22, 12:50 UTCJul 22, 13:00 UTC10m
2026-07-21 KNE254 AMM → RUH Jul 21, 21:45 UTCJul 21, 21:55 UTC10m
2026-07-21 KNE254 AMM → RUH Jul 21, 20:00 UTCJul 21, 20:30 UTC30m
2026-07-21 KNE253 - Jul 21, 17:55 UTCJul 21, 18:20 UTC25m
2026-07-21 KNE273 RUH → CAI Jul 21, 07:55 UTCJul 21, 08:30 UTC35m
2026-07-20 KNE254 AMM → RUH Jul 20, 20:20 UTCJul 20, 20:45 UTC25m
2026-07-20 KNE253 - Jul 20, 17:45 UTCJul 20, 18:40 UTC55m
2026-07-20 KNE274 - Jul 20, 12:35 UTCJul 20, 12:45 UTC10m
2026-07-20 KNE273 RUH → CAI Jul 20, 07:55 UTCJul 20, 08:15 UTC20m
2026-07-19 KNE265 - Jul 19, 18:40 UTCJul 19, 19:05 UTC25m
2026-07-19 KNE273 RUH → CAI Jul 19, 08:25 UTCJul 19, 08:45 UTC20m
2026-07-17 KNE254 AMM → RUH Jul 17, 19:49 UTCJul 18, 10:35 UTC14h 46m
2026-07-17 KNE253 - Jul 17, 18:00 UTCJul 17, 18:29 UTC30m
2026-07-16 KNE254 AMM → RUH Jul 16, 20:15 UTCJul 17, 08:59 UTC12h 45m
2026-07-16 KNE253 - Jul 16, 18:19 UTCJul 16, 18:40 UTC20m
2026-07-15 KNE254 - Jul 15, 19:45 UTCJul 16, 08:55 UTC13h 10m
2026-07-15 KNE253 - Jul 15, 17:50 UTCJul 15, 18:15 UTC25m
2026-07-14 KNE273 - Jul 14, 19:50 UTCJul 15, 08:55 UTC13h 4m
2026-07-14 KNE253 - Jul 14, 17:50 UTCJul 14, 18:25 UTC35m
2026-07-13 KNE254 - Jul 13, 19:50 UTCJul 14, 08:35 UTC12h 45m
2026-07-13 KNE253 - Jul 13, 17:55 UTCJul 13, 18:20 UTC25m
2026-07-12 KNE254 - Jul 12, 20:05 UTCJul 13, 08:45 UTC12h 40m
2026-07-12 KNE253 - Jul 12, 18:15 UTCJul 12, 18:40 UTC25m
2026-07-12 KNE286 - Jul 12, 12:50 UTCJul 12, 13:01 UTC10m
2026-07-11 KNE254 - Jul 11, 19:50 UTCJul 12, 10:30 UTC14h 40m
2026-07-11 KNE253 - Jul 11, 18:05 UTCJul 11, 18:20 UTC15m
2026-07-11 KNE286 - Jul 11, 12:40 UTCJul 11, 12:50 UTC10m
2026-07-10 KNE285 - Jul 10, 21:15 UTCJul 11, 10:30 UTC13h 15m
2026-07-10 KNE265 - Jul 10, 13:30 UTCJul 10, 19:40 UTC6h 10m
2026-07-09 KNE266 - Jul 9, 21:35 UTCJul 10, 11:05 UTC13h 30m
2026-07-09 KNE265 - Jul 9, 18:55 UTCJul 9, 19:35 UTC40m
2026-07-08 KNE300 - Jul 8, 18:30 UTCJul 9, 10:25 UTC15h 55m
2026-07-08 KNE299 - Jul 8, 08:45 UTCJul 8, 17:00 UTC8h 15m
2026-07-08 KNE303 - Jul 8, 07:15 UTCJul 8, 07:25 UTC10m
2026-07-07 KNE303 - Jul 7, 21:10 UTCJul 8, 06:25 UTC9h 15m
2026-07-07 KNE265 RUH → CAI Jul 7, 11:05 UTCJul 7, 19:40 UTC8h 35m
2026-07-06 KNE300 - Jul 6, 19:35 UTCJul 7, 08:55 UTC13h 20m
2026-07-06 KNE299 - Jul 6, 08:55 UTCJul 6, 17:35 UTC8h 40m

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

Mode-S 4B9E01 frequently asked

What is Mode-S code 4B9E01?
4B9E01 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-GPA.
Where is Mode-S 4B9E01 registered?
Mode-S code 4B9E01 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4B9E01 broadcasting right now?
No active broadcast right now. Last signal was 11d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4B9E01, octal 22717001, decimal 4,955,649.
What flights does 4B9E01 operate?
Mode-S 4B9E01 has broadcast 16 distinct callsigns, including KNE254, KNE253, KNE265, KNE263, KNE299.