Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

4BB961

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-NKA · GULFSTREAM 4

Hex
4BB961
Octal
22734541
Decimal
4,962,657
Country
TR
Tail
TC-NKA
Type
GLF4
No current signal · last broadcast 18h ago
Flights observed
87
Distinct callsigns
2
Country
TR
Last broadcast
18h ago

Last known position

Most recent position reported by Mode-S 4BB961.

Country allocation

The ICAO 24-bit address 4BB961 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 2 distinct

Callsign Airline Flights Last seen
EAJ01 - 82 2026-07-17
EAJ001 - 5 2026-07-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 EAJ01 - Jul 17, 11:10 UTCJul 17, 11:55 UTC45m
2026-07-16 EAJ01 - Jul 16, 16:44 UTCJul 16, 17:25 UTC40m
2026-07-16 EAJ01 - Jul 16, 10:29 UTCJul 16, 10:50 UTC20m
2026-07-15 EAJ001 - Jul 15, 16:25 UTCJul 15, 19:40 UTC3h 15m
2026-07-14 EAJ001 - Jul 14, 12:05 UTCJul 14, 14:50 UTC2h 45m
2026-07-14 EAJ01 - Jul 14, 07:50 UTCJul 14, 09:20 UTC1h 30m
2026-07-14 EAJ01 - Jul 14, 04:00 UTCJul 14, 06:45 UTC2h 45m
2026-07-10 EAJ01 - Jul 10, 11:40 UTCJul 10, 13:30 UTC1h 50m
2026-07-10 EAJ01 - Jul 10, 06:55 UTCJul 10, 09:05 UTC2h 10m
2026-07-09 EAJ01 - Jul 9, 14:05 UTCJul 9, 15:00 UTC55m
2026-07-09 EAJ01 - Jul 9, 12:30 UTCJul 9, 13:20 UTC50m
2026-07-08 EAJ01 - Jul 8, 19:50 UTCJul 8, 20:40 UTC50m
2026-07-08 EAJ01 - Jul 8, 16:10 UTCJul 8, 18:45 UTC2h 35m
2026-07-08 EAJ01 - Jul 8, 11:55 UTCJul 8, 14:40 UTC2h 45m
2026-07-06 EAJ01 - Jul 6, 09:35 UTCJul 6, 11:25 UTC1h 50m
2026-07-05 EAJ01 - Jul 5, 15:25 UTCJul 5, 16:50 UTC1h 25m
2026-07-05 EAJ01 ZRH → TLN Jul 5, 13:35 UTCJul 5, 14:35 UTC1h 0m
2026-07-03 EAJ01 - Jul 3, 11:00 UTCJul 3, 13:35 UTC2h 35m
2026-06-30 EAJ01 - Jun 30, 15:05 UTCJun 30, 15:40 UTC35m
2026-06-30 EAJ01 - Jun 30, 11:15 UTCJun 30, 11:35 UTC20m
2026-06-28 EAJ01 - Jun 28, 15:20 UTCJun 28, 17:55 UTC2h 35m
2026-06-28 EAJ01 - Jun 28, 11:39 UTCJun 28, 14:14 UTC2h 35m
2026-06-26 EAJ01 - Jun 26, 18:34 UTCJun 26, 19:50 UTC1h 15m
2026-06-26 EAJ01 - Jun 26, 09:45 UTCJun 26, 11:00 UTC1h 15m
2026-06-24 EAJ01 - Jun 24, 15:39 UTCJun 24, 16:19 UTC40m
2026-06-24 EAJ01 - Jun 24, 12:54 UTCJun 24, 13:34 UTC40m
2026-06-23 EAJ001 - Jun 23, 14:44 UTCJun 23, 17:50 UTC3h 5m
2026-06-23 EAJ001 - Jun 23, 12:15 UTCJun 23, 13:15 UTC1h 0m
2026-06-23 EAJ001 - Jun 23, 08:45 UTCJun 23, 11:14 UTC2h 30m
2026-06-20 EAJ01 - Jun 20, 13:34 UTCJun 20, 14:24 UTC50m
2026-06-20 EAJ01 - Jun 20, 12:09 UTCJun 20, 12:45 UTC35m
2026-06-17 EAJ01 - Jun 17, 14:15 UTCJun 17, 14:45 UTC30m
2026-06-17 EAJ01 - Jun 17, 08:45 UTCJun 17, 09:15 UTC30m
2026-06-15 EAJ01 - Jun 15, 15:35 UTCJun 15, 16:45 UTC1h 10m
2026-06-15 EAJ01 - Jun 15, 13:10 UTCJun 15, 13:54 UTC45m
2026-06-14 EAJ01 - Jun 14, 09:35 UTCJun 14, 12:05 UTC2h 30m
2026-06-12 EAJ01 - Jun 12, 11:00 UTCJun 12, 12:00 UTC1h 0m
2026-06-09 EAJ01 - Jun 9, 08:35 UTCJun 9, 12:10 UTC3h 35m
2026-06-08 EAJ01 - Jun 8, 13:45 UTCJun 8, 19:00 UTC5h 15m
2026-06-04 EAJ01 - Jun 4, 16:35 UTCJun 4, 19:00 UTC2h 25m
2026-06-04 EAJ01 - Jun 4, 07:10 UTCJun 4, 08:50 UTC1h 40m
2026-06-03 EAJ01 - Jun 3, 05:45 UTCJun 3, 08:35 UTC2h 50m
2026-06-02 EAJ01 - Jun 2, 14:50 UTCJun 2, 15:45 UTC55m
2026-06-02 EAJ01 - Jun 2, 12:40 UTCJun 2, 13:20 UTC40m
2026-05-31 EAJ01 - May 31, 14:45 UTCMay 31, 17:35 UTC2h 50m
2026-05-31 EAJ01 NCE → GVA May 31, 12:55 UTCMay 31, 13:40 UTC45m
2026-05-31 EAJ01 NCE → NCE May 31, 12:20 UTCMay 31, 12:45 UTC25m
2026-05-31 EAJ01 - May 31, 09:30 UTCMay 31, 12:10 UTC2h 40m
2026-05-30 EAJ01 - May 30, 13:50 UTCMay 30, 14:50 UTC1h 0m
2026-05-30 EAJ01 - May 30, 11:10 UTCMay 30, 11:50 UTC40m

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

Mode-S 4BB961 frequently asked

What is Mode-S code 4BB961?
4BB961 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-NKA.
Where is Mode-S 4BB961 registered?
Mode-S code 4BB961 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BB961 broadcasting right now?
No active broadcast right now. Last signal was 18h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BB961, octal 22734541, decimal 4,962,657.
What flights does 4BB961 operate?
Mode-S 4BB961 has broadcast 2 distinct callsigns, including EAJ01, EAJ001.