Apparatus

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sensors Mode-S transponder

71C389

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

Currently assigned to HL8389 · BOEING 787-9 Dreamliner

Hex
71C389
Octal
34341611
Decimal
7,455,625
Country
KR
Tail
HL8389
Type
B789
No current signal · last broadcast 7h ago
Flights observed
136
Distinct callsigns
18
Country
KR
Last broadcast
7h ago

Last known position

Most recent position reported by Mode-S 71C389.

Country allocation

The ICAO 24-bit address 71C389 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 - 22 2026-07-07
APZ101 - 22 2026-07-07
APZ131 - 19 2026-07-12
APZ132 - 18 2026-07-13
APZ112 - 8 2026-07-09
APZ801 - 7 2026-07-03
APZ111 - 7 2026-07-08
APZ136 - 6 2026-06-29
APZ802 - 5 2026-07-03
APZ621 - 5 2026-07-02
APZ135 - 5 2026-06-29
APZ622 Air Premiea 4 2026-05-14
APZ152 Air Premiea 2 2026-05-14
APZ151 Air Premiea 2 2026-05-13
APZ512F - 1 2026-05-23
APZ511F - 1 2026-05-16
APZ104 Air Premiea 1 2026-04-23
APZ103 Air Premiea 1 2026-04-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 APZ132 EWR → ICN Jul 13, 05:10 UTCJul 13, 19:25 UTC14h 15m
2026-07-12 APZ131 ICN → EWR Jul 12, 12:40 UTCJul 13, 02:05 UTC13h 25m
2026-07-11 APZ132 - Jul 11, 05:40 UTCJul 11, 20:10 UTC14h 30m
2026-07-10 APZ131 ICN → EWR Jul 10, 12:50 UTCJul 11, 02:30 UTC13h 40m
2026-07-09 APZ112 - Jul 9, 00:15 UTCJul 9, 11:50 UTC11h 35m
2026-07-08 APZ111 ICN → SFO Jul 8, 10:35 UTCJul 8, 20:55 UTC10h 20m
2026-07-07 APZ102 - Jul 7, 17:55 UTCJul 8, 06:15 UTC12h 20m
2026-07-07 APZ101 - Jul 7, 04:15 UTCJul 7, 15:00 UTC10h 45m
2026-07-06 APZ132 - Jul 6, 05:25 UTCJul 6, 19:10 UTC13h 45m
2026-07-05 APZ131 ICN → EWR Jul 5, 12:45 UTCJul 6, 02:00 UTC13h 15m
2026-07-04 APZ132 - Jul 4, 05:35 UTCJul 4, 19:35 UTC14h 0m
2026-07-03 APZ131 ICN → EWR Jul 3, 12:35 UTCJul 4, 02:00 UTC13h 25m
2026-07-03 APZ802 - Jul 3, 06:50 UTCJul 3, 09:50 UTC3h 0m
2026-07-03 APZ801 ICN → HKG Jul 3, 00:45 UTCJul 3, 03:50 UTC3h 5m
2026-07-02 APZ621 ICN → ICN Jul 2, 09:15 UTCJul 2, 20:20 UTC11h 5m
2026-07-01 APZ102 - Jul 1, 17:55 UTCJul 2, 06:35 UTC12h 40m
2026-07-01 APZ101 ICN → LAX Jul 1, 04:20 UTCJul 1, 14:50 UTC10h 30m
2026-06-29 APZ136 IAD → ICN Jun 29, 17:34 UTCJun 30, 08:05 UTC14h 31m
2026-06-29 APZ135 - Jun 29, 01:20 UTCJun 29, 14:39 UTC13h 20m
2026-06-28 APZ132 EWR → ICN Jun 28, 05:45 UTCJun 28, 20:14 UTC14h 30m
2026-06-27 APZ131 ICN → EWR Jun 27, 12:39 UTCJun 28, 01:34 UTC12h 55m
2026-06-26 APZ136 IAD → ICN Jun 26, 17:40 UTCJun 27, 08:14 UTC14h 35m
2026-06-26 APZ135 ICN → IAD Jun 26, 01:20 UTCJun 26, 14:25 UTC13h 5m
2026-06-24 APZ112 - Jun 24, 23:10 UTCJun 25, 11:04 UTC11h 55m
2026-06-24 APZ111 ICN → SFO Jun 24, 09:09 UTCJun 24, 18:55 UTC9h 45m
2026-06-23 APZ102 - Jun 23, 17:59 UTCJun 24, 06:15 UTC12h 15m
2026-06-23 APZ101 ICN → LAX Jun 23, 04:19 UTCJun 23, 14:35 UTC10h 15m
2026-06-22 APZ132 EWR → ICN Jun 22, 05:10 UTCJun 22, 19:24 UTC14h 15m
2026-06-21 APZ131 ICN → EWR Jun 21, 12:44 UTCJun 22, 02:10 UTC13h 25m
2026-06-21 APZ802 HKG → ICN Jun 21, 05:49 UTCJun 21, 08:54 UTC3h 5m
2026-06-21 APZ801 - Jun 21, 00:45 UTCJun 21, 03:49 UTC3h 5m
2026-06-20 APZ132 EWR → ICN Jun 20, 04:59 UTCJun 20, 18:40 UTC13h 40m
2026-06-19 APZ131 ICN → EWR Jun 19, 12:49 UTCJun 20, 02:09 UTC13h 20m
2026-06-17 APZ112 - Jun 17, 22:55 UTCJun 18, 10:20 UTC11h 25m
2026-06-17 APZ111 - Jun 17, 09:05 UTCJun 17, 19:35 UTC10h 30m
2026-06-16 APZ102 - Jun 16, 17:55 UTCJun 17, 06:00 UTC12h 6m
2026-06-16 APZ101 - Jun 16, 04:15 UTCJun 16, 15:00 UTC10h 45m
2026-06-15 APZ132 - Jun 15, 05:50 UTCJun 15, 20:10 UTC14h 20m
2026-06-14 APZ131 ICN → EWR Jun 14, 12:45 UTCJun 15, 02:04 UTC13h 20m
2026-06-14 APZ802 HKG → ICN Jun 14, 05:30 UTCJun 14, 08:30 UTC3h 0m
2026-06-14 APZ801 - Jun 14, 03:35 UTCJun 14, 03:50 UTC15m
2026-06-14 APZ801 - Jun 14, 00:40 UTCJun 14, 02:55 UTC2h 15m
2026-06-12 APZ102 - Jun 12, 18:05 UTCJun 13, 06:00 UTC11h 54m
2026-06-12 APZ101 ICN → LAX Jun 12, 04:20 UTCJun 12, 14:35 UTC10h 15m
2026-06-11 APZ112 SFO → ICN Jun 11, 09:10 UTCJun 11, 11:35 UTC2h 25m
2026-06-10 APZ112 SFO → ICN Jun 10, 23:00 UTCJun 10, 23:25 UTC25m
2026-06-10 APZ111 ICN → SFO Jun 10, 09:10 UTCJun 10, 18:45 UTC9h 35m
2026-06-09 APZ136 IAD → ICN Jun 9, 08:00 UTCJun 9, 08:25 UTC25m
2026-06-08 APZ136 IAD → ICN Jun 8, 17:45 UTCJun 9, 07:25 UTC13h 40m
2026-06-08 APZ135 ICN → IAD Jun 8, 01:20 UTCJun 8, 14:45 UTC13h 25m

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 HL8389 page for operator, model, and routing details .

Mode-S 71C389 frequently asked

What is Mode-S code 71C389?
71C389 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8389.
Where is Mode-S 71C389 registered?
Mode-S code 71C389 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 71C389 broadcasting right now?
No active broadcast right now. Last signal was 7h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C389, octal 34341611, decimal 7,455,625.
What flights does 71C389 operate?
Mode-S 71C389 has broadcast 18 distinct callsigns, including APZ102, APZ101, APZ131, APZ132, APZ112.