sensors Mode-S transponder

71C387

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

Currently assigned to HL8387 · BOEING 787-9 Dreamliner

Hex
71C387
Octal
34341607
Decimal
7,455,623
Country
KR
Tail
HL8387
Type
B789
No current signal · last broadcast 7m ago
Flights observed
86
Distinct callsigns
18
Country
KR
Last broadcast
7m ago

Last known position

Most recent position reported by Mode-S 71C387.

Country allocation

The ICAO 24-bit address 71C387 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 18 distinct

Callsign Airline Flights Last seen
APZ102 Air Premiea 15 2026-05-27
APZ101 Air Premiea 15 2026-05-27
APZ131 Air Premiea 10 2026-05-12
APZ132 Air Premiea 8 2026-05-13
APZ112 Air Premiea 8 2026-05-25
APZ111 Air Premiea 8 2026-05-25
APZ621 Air Premiea 5 2026-05-21
APZ136 Air Premiea 3 2026-05-29
APZ104 Air Premiea 3 2026-04-20
APZ622 Air Premiea 2 2026-05-28
APZ135 Air Premiea 2 2026-05-29
APZ736 Air Premiea 1 2026-04-19
APZ735 Air Premiea 1 2026-04-19
APZ732 Air Premiea 1 2026-05-16
APZ731 Air Premiea 1 2026-05-16
APZ602 Air Premiea 1 2026-05-15
APZ601 Air Premiea 1 2026-05-15
APZ103 Air Premiea 1 2026-04-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 APZ136 IAD → ICN May 29, 17:40 UTCMay 30, 07:45 UTC14h 5m
2026-05-29 APZ135 ICN → IAD May 29, 01:20 UTCMay 29, 14:50 UTC13h 30m
2026-05-28 APZ622 DAD → ICN May 28, 09:10 UTCMay 28, 19:55 UTC10h 45m
2026-05-27 APZ102 LAX → ICN May 27, 18:00 UTCMay 28, 06:40 UTC12h 40m
2026-05-27 APZ101 ICN → LAX May 27, 04:19 UTCMay 27, 15:05 UTC10h 45m
2026-05-25 APZ112 SFO → ICN May 25, 23:00 UTCMay 26, 10:50 UTC11h 50m
2026-05-25 APZ111 ICN → SFO May 25, 09:05 UTCMay 25, 19:15 UTC10h 10m
2026-05-24 APZ102 LAX → ICN May 24, 18:05 UTCMay 25, 06:25 UTC12h 20m
2026-05-24 APZ101 ICN → LAX May 24, 04:05 UTCMay 24, 14:35 UTC10h 30m
2026-05-23 APZ622 DAD → ICN May 23, 09:10 UTCMay 23, 19:55 UTC10h 45m
2026-05-22 APZ102 LAX → ICN May 22, 18:00 UTCMay 23, 06:15 UTC12h 14m
2026-05-22 APZ101 ICN → LAX May 22, 04:25 UTCMay 22, 14:50 UTC10h 25m
2026-05-21 APZ621 ICN → DAD May 21, 09:15 UTCMay 21, 20:00 UTC10h 45m
2026-05-20 APZ102 LAX → ICN May 20, 18:05 UTCMay 21, 06:45 UTC12h 40m
2026-05-20 APZ101 ICN → LAX May 20, 04:25 UTCMay 20, 14:45 UTC10h 21m
2026-05-18 APZ112 SFO → ICN May 18, 22:55 UTCMay 19, 11:05 UTC12h 10m
2026-05-18 APZ111 ICN → SFO May 18, 09:10 UTCMay 18, 19:30 UTC10h 19m
2026-05-17 APZ102 LAX → ICN May 17, 18:10 UTCMay 18, 06:25 UTC12h 15m
2026-05-17 APZ101 ICN → LAX May 17, 04:20 UTCMay 17, 14:50 UTC10h 30m
2026-05-16 APZ621 ICN → DAD May 16, 09:06 UTCMay 16, 20:00 UTC10h 55m
2026-05-16 APZ732 NRT → ICN May 16, 03:55 UTCMay 16, 05:35 UTC1h 40m
2026-05-16 APZ731 ICN → NRT May 16, 00:00 UTCMay 16, 02:10 UTC2h 10m
2026-05-15 APZ602 BKK → ICN May 15, 16:05 UTCMay 15, 20:55 UTC4h 50m
2026-05-15 APZ601 ICN → BKK May 15, 08:40 UTCMay 15, 13:55 UTC5h 15m
2026-05-14 APZ102 LAX → ICN May 14, 18:10 UTCMay 15, 06:40 UTC12h 30m
2026-05-14 APZ101 ICN → LAX May 14, 04:15 UTCMay 14, 14:50 UTC10h 35m
2026-05-13 APZ132 EWR → ICN May 13, 05:20 UTCMay 13, 19:25 UTC14h 5m
2026-05-12 APZ131 ICN → EWR May 12, 12:45 UTCMay 13, 02:15 UTC13h 30m
2026-05-12 APZ112 SFO → ICN May 12, 08:15 UTCMay 12, 10:15 UTC2h 0m
2026-05-11 APZ111 ICN → SFO May 11, 09:25 UTCMay 11, 19:20 UTC9h 55m
2026-05-10 APZ102 LAX → ICN May 10, 18:20 UTCMay 11, 06:30 UTC12h 10m
2026-05-10 APZ101 ICN → LAX May 10, 04:25 UTCMay 10, 14:40 UTC10h 15m
2026-05-09 APZ132 EWR → ICN May 9, 05:15 UTCMay 9, 19:49 UTC14h 35m
2026-05-08 APZ131 ICN → EWR May 8, 13:45 UTCMay 9, 02:35 UTC12h 50m
2026-05-07 APZ621 ICN → DAD May 7, 09:15 UTCMay 7, 19:55 UTC10h 40m
2026-05-04 APZ112 SFO → ICN May 4, 22:45 UTCMay 5, 10:30 UTC11h 45m
2026-05-04 APZ111 ICN → SFO May 4, 09:20 UTCMay 4, 19:30 UTC10h 11m
2026-05-03 APZ102 LAX → ICN May 3, 18:05 UTCMay 4, 06:40 UTC12h 35m
2026-05-03 APZ101 ICN → LAX May 3, 04:10 UTCMay 3, 14:55 UTC10h 45m
2026-05-02 APZ621 ICN → DAD May 2, 09:15 UTCMay 2, 20:15 UTC11h 0m
2026-05-01 APZ102 LAX → ICN May 1, 18:10 UTCMay 2, 06:55 UTC12h 45m
2026-05-01 APZ101 ICN → LAX May 1, 05:25 UTCMay 1, 14:45 UTC9h 20m
2026-05-01 APZ101 ICN → LAX May 1, 04:15 UTCMay 1, 04:45 UTC30m
2026-04-30 APZ621 ICN → DAD Apr 30, 09:10 UTCApr 30, 19:45 UTC10h 35m
2026-04-29 APZ102 LAX → ICN Apr 29, 17:55 UTCApr 30, 06:30 UTC12h 34m
2026-04-29 APZ101 ICN → LAX Apr 29, 04:20 UTCApr 29, 14:25 UTC10h 6m
2026-04-28 APZ132 EWR → ICN Apr 28, 05:05 UTCApr 28, 19:55 UTC14h 50m
2026-04-27 APZ131 ICN → EWR Apr 27, 13:10 UTCApr 28, 02:10 UTC13h 0m
2026-04-27 APZ136 IAD → ICN Apr 27, 08:05 UTCApr 27, 08:35 UTC30m
2026-04-26 APZ136 IAD → ICN Apr 26, 17:30 UTCApr 27, 07:30 UTC14h 0m

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 HL8387 page for operator, model, and routing details .

Mode-S 71C387 frequently asked

What is Mode-S code 71C387?
71C387 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8387.
Where is Mode-S 71C387 registered?
Mode-S code 71C387 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 71C387 broadcasting right now?
No active broadcast right now. Last signal was 7m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C387, octal 34341607, decimal 7,455,623.
What flights does 71C387 operate?
Mode-S 71C387 has broadcast 18 distinct callsigns, including APZ102, APZ101, APZ131, APZ132, APZ112.