Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

71C752

ICAO 24-bit transponder address · allocated to Korea, South

Currently assigned to HL8752 · BOEING 737 MAX 8

Hex
71C752
Octal
34343522
Decimal
7,456,594
Country
KR
Tail
HL8752
Type
B38M
No current signal · last broadcast Jul 26, 16:45 UTC
Flights observed
390
Distinct callsigns
20
Country
KR
Last broadcast
Jul 26, 16:45 UTC

Last known position

Most recent position reported by Mode-S 71C752.

Country allocation

The ICAO 24-bit address 71C752 falls within the block assigned to Korea, South (KR) by ICAO Annex 10, Volume III. Every aircraft registered in Korea, South 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
TWB245 Tway Airlines 43 2026-07-25
TWB246 Tway Airlines 42 2026-07-25
TWB302 Tway Airlines 33 2026-07-26
TWB301 Tway Airlines 33 2026-07-25
TWB206 Tway Airlines 27 2026-07-26
TWB205 Tway Airlines 26 2026-07-26
TWB202 - 22 2026-07-13
TWB201 - 22 2026-07-13
TWB282 Tway Airlines 19 2026-07-21
TWB208 Tway Airlines 16 2026-07-24
TWB207 Tway Airlines 15 2026-07-24
TWB281 Tway Airlines 14 2026-07-22
TWB304 Tway Airlines 10 2026-07-19
TWB303 Tway Airlines 10 2026-07-19
TWB244 Tway Airlines 9 2026-07-24
TWB243 Tway Airlines 7 2026-07-24
TWB102 - 7 2026-07-19
TWB438 Tway Airlines 6 2026-07-21
TWB437 Tway Airlines 5 2026-07-21
TWB101 - 5 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 TWB308 KIX → ICN Jul 26, 15:20 UTCJul 26, 16:40 UTC1h 20m
2026-07-26 TWB307 ICN → KIX Jul 26, 12:20 UTCJul 26, 13:40 UTC1h 20m
2026-07-26 TWB206 FUK → ICN Jul 26, 08:50 UTCJul 26, 09:40 UTC50m
2026-07-26 TWB205 ICN → FUK Jul 26, 06:20 UTCJul 26, 07:15 UTC56m
2026-07-26 TWB302 KIX → ICN Jul 26, 03:00 UTCJul 26, 04:20 UTC1h 20m
2026-07-25 TWB301 ICN → KIX Jul 25, 23:20 UTCJul 26, 00:40 UTC1h 20m
2026-07-25 TWB246 NRT → ICN Jul 25, 11:15 UTCJul 25, 13:10 UTC1h 55m
2026-07-25 TWB245 ICN → NRT Jul 25, 07:20 UTCJul 25, 09:30 UTC2h 10m
2026-07-25 TWB302 KIX → ICN Jul 25, 03:00 UTCJul 25, 04:20 UTC1h 20m
2026-07-24 TWB301 ICN → KIX Jul 24, 23:15 UTCJul 25, 00:35 UTC1h 20m
2026-07-24 TWB208 FUK → ICN Jul 24, 11:50 UTCJul 24, 12:50 UTC1h 0m
2026-07-24 TWB207 ICN → FUK Jul 24, 09:30 UTCJul 24, 10:20 UTC50m
2026-07-24 TWB244 NRT → ICN Jul 24, 05:50 UTCJul 24, 07:45 UTC1h 55m
2026-07-24 TWB243 ICN → NRT Jul 24, 02:00 UTCJul 24, 04:00 UTC2h 0m
2026-07-23 TWB056 PQC → ICN Jul 23, 11:25 UTCJul 23, 23:25 UTC12h 0m
2026-07-22 TWB008 ICN → ICN Jul 22, 23:20 UTCJul 23, 09:15 UTC9h 55m
2026-07-22 TWB208 FUK → ICN Jul 22, 11:20 UTCJul 22, 13:00 UTC1h 40m
2026-07-22 TWB281 ICN → OKA Jul 22, 02:25 UTCJul 22, 04:05 UTC1h 40m
2026-07-21 TWB438 FRU → ICN Jul 21, 11:30 UTCJul 22, 00:10 UTC12h 40m
2026-07-21 TWB437 ICN → FRU Jul 21, 10:15 UTCJul 21, 10:35 UTC20m
2026-07-21 TWB282 OKA → ICN Jul 21, 06:00 UTCJul 21, 07:45 UTC1h 45m
2026-07-21 TWB281 ICN → OKA Jul 21, 03:45 UTCJul 21, 04:10 UTC25m
2026-07-21 TWB281 ICN → OKA Jul 21, 02:20 UTCJul 21, 02:55 UTC35m
2026-07-20 TWB644 HKG → ICN Jul 20, 05:25 UTCJul 20, 08:40 UTC3h 15m
2026-07-20 TWB643 ICN → HKG Jul 20, 03:30 UTCJul 20, 03:45 UTC15m
2026-07-20 TWB643 ICN → HKG Jul 20, 00:25 UTCJul 20, 02:55 UTC2h 30m
2026-07-19 TWB102 - Jul 19, 19:55 UTCJul 19, 22:45 UTC2h 50m
2026-07-19 TWB102 - Jul 19, 17:40 UTCJul 19, 18:05 UTC25m
2026-07-19 TWB101 - Jul 19, 14:30 UTCJul 19, 14:40 UTC10m
2026-07-19 TWB101 - Jul 19, 09:35 UTCJul 19, 12:25 UTC2h 50m
2026-07-19 TWB304 KIX → ICN Jul 19, 05:50 UTCJul 19, 07:15 UTC1h 25m
2026-07-19 TWB303 ICN → KIX Jul 19, 02:20 UTCJul 19, 03:50 UTC1h 30m
2026-07-18 TWB308 KIX → ICN Jul 18, 15:20 UTCJul 18, 16:35 UTC1h 15m
2026-07-18 TWB307 ICN → KIX Jul 18, 12:10 UTCJul 18, 13:30 UTC1h 20m
2026-07-18 TWB206 - Jul 18, 08:45 UTCJul 18, 09:45 UTC1h 0m
2026-07-18 TWB205 - Jul 18, 06:35 UTCJul 18, 07:15 UTC40m
2026-07-18 TWB302 KIX → ICN Jul 18, 02:50 UTCJul 18, 04:05 UTC1h 15m
2026-07-17 TWB301 ICN → KIX Jul 17, 23:14 UTCJul 18, 00:35 UTC1h 20m
2026-07-16 TWB102 - Jul 16, 20:09 UTCJul 16, 23:10 UTC3h 0m
2026-07-16 TWB102 - Jul 16, 17:49 UTCJul 16, 18:05 UTC15m
2026-07-16 TWB101 - Jul 16, 09:15 UTCJul 16, 14:35 UTC5h 20m
2026-07-16 TWB304 KIX → ICN Jul 16, 05:50 UTCJul 16, 07:15 UTC1h 25m
2026-07-16 TWB303 ICN → KIX Jul 16, 02:10 UTCJul 16, 03:30 UTC1h 20m
2026-07-15 TWB102 - Jul 15, 20:25 UTCJul 15, 23:15 UTC2h 50m
2026-07-15 TWB102 - Jul 15, 18:05 UTCJul 15, 18:25 UTC20m
2026-07-15 TWB101 - Jul 15, 14:20 UTCJul 15, 14:40 UTC20m
2026-07-15 TWB101 - Jul 15, 09:30 UTCJul 15, 12:20 UTC2h 50m
2026-07-15 TWB282 - Jul 15, 05:45 UTCJul 15, 07:40 UTC1h 55m
2026-07-15 TWB281 - Jul 15, 03:35 UTCJul 15, 04:00 UTC25m
2026-07-15 TWB281 - Jul 15, 02:15 UTCJul 15, 02:50 UTC35m

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 HL8752 page for operator, model, and routing details .

Mode-S 71C752 frequently asked

What is Mode-S code 71C752?
71C752 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8752.
Where is Mode-S 71C752 registered?
Mode-S code 71C752 is allocated to Korea, South (KR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 71C752 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 16:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C752, octal 34343522, decimal 7,456,594.
What flights does 71C752 operate?
Mode-S 71C752 has broadcast 20 distinct callsigns, including TWB245, TWB246, TWB302, TWB301, TWB206.