Apparatus

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sensors Mode-S transponder

4BB142

ICAO 24-bit transponder address · allocated to Turkey

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

Hex
4BB142
Octal
22730502
Decimal
4,960,578
Country
TR
Tail
TC-LJB
Type
B77W
Broadcasting now · callsign THY54 · 35,000 ft
Flights observed
270
Distinct callsigns
20
Country
TR
Last broadcast
Jul 26, 20:05 UTC

Current position

4BB142 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 4BB142 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
THY1 Turkish Airlines 13 2026-07-23
THY91 - 10 2026-07-11
THY2 Turkish Airlines 10 2026-07-24
THY90 - 9 2026-07-10
THY6KL Turkish Airlines 9 2026-07-23
THY27 Turkish Airlines 9 2026-06-20
THY8FW Turkish Airlines 8 2026-07-23
THY73 - 8 2026-07-15
THY6 - 8 2026-07-14
THY9 - 7 2026-07-20
THY5 - 7 2026-07-13
THY26 - 7 2026-06-18
THY85 Turkish Airlines 6 2026-07-20
THY84 Turkish Airlines 6 2026-07-19
THY71 Turkish Airlines 6 2026-06-17
THY199 - 5 2026-07-07
THY99D Turkish Airlines 4 2026-07-26
THY8AK - 4 2026-07-18
THY89 Turkish Airlines 4 2026-07-04
THY86 Turkish Airlines 4 2026-05-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 THY59E IST → BOM Jul 26, 18:10 UTCJul 26, 20:05 UTC1h 55m
2026-07-26 THY99D MIA → IST Jul 26, 03:55 UTCJul 26, 14:35 UTC10h 41m
2026-07-25 THY77J IST → MIA Jul 25, 14:15 UTCJul 26, 01:15 UTC11h 0m
2026-07-25 THY8 IAD → IST Jul 25, 02:00 UTCJul 25, 11:05 UTC9h 5m
2026-07-24 THY7 IST → IAD Jul 24, 13:25 UTCJul 24, 23:40 UTC10h 15m
2026-07-24 THY2 JFK → IST Jul 24, 01:15 UTCJul 24, 10:00 UTC8h 45m
2026-07-23 THY1 IST → JFK Jul 23, 11:55 UTCJul 23, 22:05 UTC10h 10m
2026-07-23 THY6KL ATH → IST Jul 23, 07:45 UTCJul 23, 08:45 UTC1h 0m
2026-07-23 THY8FW IST → ATH Jul 23, 04:55 UTCJul 23, 05:55 UTC1h 0m
2026-07-23 THY55 SIN → IST Jul 23, 01:35 UTCJul 23, 01:50 UTC15m
2026-07-22 THY55 SIN → IST Jul 22, 15:30 UTCJul 23, 00:50 UTC9h 20m
2026-07-22 THY54 IST → SIN Jul 22, 00:50 UTCJul 22, 05:00 UTC4h 10m
2026-07-21 THY54 IST → SIN Jul 21, 23:35 UTCJul 22, 00:00 UTC25m
2026-07-21 THY10 - Jul 21, 03:25 UTCJul 21, 15:35 UTC12h 10m
2026-07-20 THY9 - Jul 20, 12:05 UTCJul 21, 01:05 UTC12h 59m
2026-07-20 THY66C GYD → IST Jul 20, 08:20 UTCJul 20, 09:15 UTC55m
2026-07-20 THY5AB IST → BJV Jul 20, 05:40 UTCJul 20, 06:30 UTC50m
2026-07-20 THY85 MNL → IST Jul 20, 00:35 UTCJul 20, 01:05 UTC30m
2026-07-19 THY85 MNL → IST Jul 19, 13:40 UTCJul 19, 23:55 UTC10h 15m
2026-07-19 THY84 IST → MNL Jul 19, 00:55 UTCJul 19, 10:45 UTC9h 50m
2026-07-18 THY84 IST → MNL Jul 18, 23:35 UTCJul 18, 23:55 UTC20m
2026-07-18 THY8AK - Jul 18, 18:05 UTCJul 18, 19:00 UTC55m
2026-07-18 THY5HS - Jul 18, 15:10 UTCJul 18, 16:00 UTC50m
2026-07-18 THY8LV - Jul 18, 02:35 UTCJul 18, 11:40 UTC9h 6m
2026-07-17 THY1GJ - Jul 17, 14:24 UTCJul 18, 00:19 UTC9h 55m
2026-07-16 THY4 - Jul 16, 17:14 UTCJul 17, 02:20 UTC9h 5m
2026-07-16 THY3 - Jul 16, 04:55 UTCJul 16, 14:40 UTC9h 45m
2026-07-15 THY73 - Jul 15, 18:05 UTCJul 16, 00:55 UTC6h 50m
2026-07-14 THY72 - Jul 14, 22:40 UTCJul 15, 06:20 UTC7h 39m
2026-07-14 THY7ER - Jul 14, 17:55 UTCJul 14, 18:40 UTC45m
2026-07-14 THY1FC - Jul 14, 15:05 UTCJul 14, 15:50 UTC45m
2026-07-14 THY6 - Jul 14, 01:25 UTCJul 14, 11:40 UTC10h 15m
2026-07-13 THY5 - Jul 13, 12:00 UTCJul 13, 22:50 UTC10h 50m
2026-07-13 THY32W - Jul 13, 01:30 UTCJul 13, 07:25 UTC5h 55m
2026-07-12 THY51Q - Jul 12, 17:40 UTCJul 12, 22:50 UTC5h 10m
2026-07-12 THY5YR - Jul 12, 02:50 UTCJul 12, 14:15 UTC11h 25m
2026-07-11 THY83J - Jul 11, 12:20 UTCJul 12, 00:25 UTC12h 5m
2026-07-11 THY2MT - Jul 11, 08:01 UTCJul 11, 08:55 UTC55m
2026-07-11 THY7PW - Jul 11, 05:25 UTCJul 11, 06:15 UTC50m
2026-07-11 THY91 - Jul 11, 00:30 UTCJul 11, 00:55 UTC25m
2026-07-10 THY91 - Jul 10, 14:20 UTCJul 10, 23:55 UTC9h 36m
2026-07-10 THY90 - Jul 10, 07:55 UTCJul 10, 08:20 UTC25m
2026-07-09 THY90 - Jul 9, 23:20 UTCJul 10, 07:00 UTC7h 40m
2026-07-09 THY2 - Jul 9, 01:00 UTCJul 9, 10:00 UTC9h 0m
2026-07-08 THY1 - Jul 8, 11:45 UTCJul 8, 21:30 UTC9h 45m
2026-07-07 THY199 - Jul 7, 13:25 UTCJul 8, 00:20 UTC10h 55m
2026-07-06 THY198 - Jul 6, 23:40 UTCJul 7, 10:00 UTC10h 20m
2026-07-06 THY6 - Jul 6, 03:20 UTCJul 6, 12:55 UTC9h 35m
2026-07-05 THY5 IST → ORD Jul 5, 13:30 UTCJul 6, 00:45 UTC11h 15m
2026-07-05 THY2 - Jul 5, 01:15 UTCJul 5, 09:50 UTC8h 35m

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

Mode-S 4BB142 frequently asked

What is Mode-S code 4BB142?
4BB142 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-LJB.
Where is Mode-S 4BB142 registered?
Mode-S code 4BB142 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BB142 broadcasting right now?
Yes. Mode-S 4BB142 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BB142, octal 22730502, decimal 4,960,578.
What flights does 4BB142 operate?
Mode-S 4BB142 has broadcast 20 distinct callsigns, including THY1, THY91, THY2, THY90, THY6KL.