sensors Mode-S transponder

71C388

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

Currently assigned to HL8388 · BOEING 787-9 Dreamliner

Hex
71C388
Octal
34341610
Decimal
7,455,624
Country
KR
Tail
HL8388
Type
B789
No current signal · last broadcast 3h ago
Flights observed
85
Distinct callsigns
14
Country
KR
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 71C388.

Country allocation

The ICAO 24-bit address 71C388 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 14 distinct

Callsign Airline Flights Last seen
APZ101 Air Premiea 19 2026-05-30
APZ102 Air Premiea 16 2026-05-28
APZ131 Air Premiea 12 2026-05-26
APZ132 Air Premiea 10 2026-05-27
APZ112 Air Premiea 10 2026-04-22
APZ111 Air Premiea 6 2026-04-22
APZ621 Air Premiea 3 2026-05-10
APZ801 Air Premiea 2 2026-05-11
APZ622 Air Premiea 2 2026-05-24
APZ802 Air Premiea 1 2026-05-11
APZ136 Air Premiea 1 2026-05-20
APZ135 Air Premiea 1 2026-05-20
APZ104 Air Premiea 1 2026-05-12
APZ103 Air Premiea 1 2026-05-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 APZ101 ICN → LAX May 30, 04:10 UTCMay 30, 05:45 UTC1h 35m
2026-05-28 APZ102 LAX → ICN May 28, 18:20 UTCMay 29, 07:15 UTC12h 55m
2026-05-28 APZ101 ICN → LAX May 28, 04:10 UTCMay 28, 15:00 UTC10h 50m
2026-05-27 APZ132 EWR → ICN May 27, 05:09 UTCMay 27, 19:45 UTC14h 36m
2026-05-26 APZ131 ICN → EWR May 26, 12:50 UTCMay 27, 02:29 UTC13h 40m
2026-05-25 APZ102 LAX → ICN May 25, 18:15 UTCMay 26, 06:39 UTC12h 25m
2026-05-25 APZ101 ICN → LAX May 25, 04:15 UTCMay 25, 14:55 UTC10h 40m
2026-05-24 APZ622 DAD → ICN May 24, 09:10 UTCMay 24, 20:10 UTC11h 0m
2026-05-23 APZ102 LAX → ICN May 23, 17:55 UTCMay 24, 06:30 UTC12h 35m
2026-05-23 APZ101 ICN → LAX May 23, 04:20 UTCMay 23, 14:45 UTC10h 25m
2026-05-22 APZ132 EWR → ICN May 22, 05:40 UTCMay 22, 20:25 UTC14h 45m
2026-05-21 APZ131 ICN → EWR May 21, 12:50 UTCMay 22, 01:45 UTC12h 55m
2026-05-20 APZ136 IAD → ICN May 20, 17:45 UTCMay 21, 08:35 UTC14h 50m
2026-05-20 APZ135 ICN → IAD May 20, 01:25 UTCMay 20, 14:25 UTC13h 1m
2026-05-18 APZ102 LAX → ICN May 18, 18:05 UTCMay 19, 06:50 UTC12h 44m
2026-05-18 APZ101 ICN → LAX May 18, 04:11 UTCMay 18, 14:45 UTC10h 35m
2026-05-17 APZ622 DAD → ICN May 17, 09:10 UTCMay 17, 20:01 UTC10h 50m
2026-05-16 APZ102 LAX → ICN May 16, 18:05 UTCMay 17, 06:35 UTC12h 30m
2026-05-16 APZ101 ICN → LAX May 16, 04:10 UTCMay 16, 14:46 UTC10h 36m
2026-05-15 APZ132 EWR → ICN May 15, 05:00 UTCMay 15, 19:10 UTC14h 9m
2026-05-14 APZ131 ICN → EWR May 14, 12:40 UTCMay 15, 02:05 UTC13h 25m
2026-05-13 APZ102 LAX → ICN May 13, 18:05 UTCMay 14, 06:20 UTC12h 15m
2026-05-13 APZ101 ICN → LAX May 13, 04:20 UTCMay 13, 14:51 UTC10h 30m
2026-05-12 APZ104 LAX → ICN May 12, 06:55 UTCMay 12, 18:30 UTC11h 35m
2026-05-11 APZ103 ICN → LAX May 11, 13:30 UTCMay 11, 22:35 UTC9h 5m
2026-05-11 APZ802 HKG → ICN May 11, 05:45 UTCMay 11, 08:50 UTC3h 5m
2026-05-11 APZ801 ICN → HKG May 11, 03:25 UTCMay 11, 03:40 UTC15m
2026-05-11 APZ801 ICN → HKG May 11, 00:34 UTCMay 11, 02:50 UTC2h 15m
2026-05-10 APZ621 ICN → DAD May 10, 09:15 UTCMay 10, 19:54 UTC10h 40m
2026-05-09 APZ102 LAX → ICN May 9, 17:55 UTCMay 10, 06:25 UTC12h 30m
2026-05-09 APZ101 ICN → LAX May 9, 04:10 UTCMay 9, 14:20 UTC10h 10m
2026-05-07 APZ102 LAX → ICN May 7, 18:00 UTCMay 8, 06:25 UTC12h 24m
2026-05-07 APZ101 ICN → LAX May 7, 05:25 UTCMay 7, 14:55 UTC9h 30m
2026-05-07 APZ101 ICN → LAX May 7, 04:20 UTCMay 7, 04:40 UTC20m
2026-05-06 APZ132 EWR → ICN May 6, 05:00 UTCMay 6, 19:30 UTC14h 29m
2026-05-05 APZ131 ICN → EWR May 5, 12:45 UTCMay 6, 01:50 UTC13h 5m
2026-05-04 APZ102 LAX → ICN May 4, 18:05 UTCMay 5, 06:30 UTC12h 26m
2026-05-04 APZ101 ICN → LAX May 4, 05:15 UTCMay 4, 14:50 UTC9h 35m
2026-05-04 APZ101 ICN → LAX May 4, 04:15 UTCMay 4, 04:34 UTC20m
2026-05-03 APZ621 ICN → DAD May 3, 09:15 UTCMay 3, 19:50 UTC10h 35m
2026-05-02 APZ102 LAX → ICN May 2, 18:20 UTCMay 3, 06:45 UTC12h 24m
2026-05-02 APZ101 ICN → LAX May 2, 05:20 UTCMay 2, 14:55 UTC9h 35m
2026-05-02 APZ101 ICN → LAX May 2, 04:15 UTCMay 2, 04:35 UTC20m
2026-04-30 APZ102 LAX → ICN Apr 30, 18:05 UTCMay 1, 06:35 UTC12h 30m
2026-04-30 APZ101 ICN → LAX Apr 30, 04:20 UTCApr 30, 14:15 UTC9h 55m
2026-04-29 APZ132 EWR → ICN Apr 29, 05:05 UTCApr 29, 19:45 UTC14h 41m
2026-04-28 APZ131 ICN → EWR Apr 28, 12:45 UTCApr 29, 01:45 UTC13h 0m
2026-04-27 APZ102 LAX → ICN Apr 27, 17:50 UTCApr 28, 06:40 UTC12h 50m
2026-04-27 APZ101 ICN → LAX Apr 27, 04:20 UTCApr 27, 14:55 UTC10h 35m
2026-04-26 APZ621 ICN → DAD Apr 26, 09:10 UTCApr 26, 19:55 UTC10h 45m

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 HL8388 page for operator, model, and routing details .

Mode-S 71C388 frequently asked

What is Mode-S code 71C388?
71C388 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8388.
Where is Mode-S 71C388 registered?
Mode-S code 71C388 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 71C388 broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C388, octal 34341610, decimal 7,455,624.
What flights does 71C388 operate?
Mode-S 71C388 has broadcast 14 distinct callsigns, including APZ101, APZ102, APZ131, APZ132, APZ112.