Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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 5h ago
Flights observed
142
Distinct callsigns
18
Country
KR
Last broadcast
5h 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 18 distinct

Callsign Airline Flights Last seen
APZ101 - 35 2026-07-13
APZ102 - 33 2026-07-13
APZ131 Air Premiea 17 2026-07-07
APZ132 - 15 2026-07-08
APZ112 - 11 2026-06-26
APZ111 - 7 2026-06-26
APZ621 Air Premiea 5 2026-06-14
APZ622 Air Premiea 3 2026-05-31
APZ136 - 3 2026-06-28
APZ135 - 3 2026-06-28
APZ801 Air Premiea 2 2026-05-11
APZ152 - 2 2026-06-30
APZ802 Air Premiea 1 2026-05-11
APZ602 Air Premiea 1 2026-06-09
APZ601 Air Premiea 1 2026-06-09
APZ151 - 1 2026-06-29
APZ104 Air Premiea 1 2026-05-12
APZ103 Air Premiea 1 2026-05-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 APZ102 - Jul 13, 18:20 UTCJul 14, 06:15 UTC11h 55m
2026-07-13 APZ101 ICN → LAX Jul 13, 04:20 UTCJul 13, 15:45 UTC11h 25m
2026-07-11 APZ102 - Jul 11, 18:15 UTCJul 12, 06:10 UTC11h 55m
2026-07-11 APZ101 - Jul 11, 04:25 UTCJul 11, 15:30 UTC11h 5m
2026-07-09 APZ102 - Jul 9, 18:05 UTCJul 10, 06:30 UTC12h 25m
2026-07-09 APZ101 ICN → LAX Jul 9, 04:30 UTCJul 9, 15:20 UTC10h 50m
2026-07-08 APZ132 EWR → ICN Jul 8, 05:20 UTCJul 8, 20:00 UTC14h 40m
2026-07-07 APZ131 ICN → EWR Jul 7, 12:40 UTCJul 8, 02:05 UTC13h 25m
2026-07-06 APZ102 - Jul 6, 18:10 UTCJul 7, 06:30 UTC12h 20m
2026-07-06 APZ101 - Jul 6, 04:35 UTCJul 6, 15:15 UTC10h 40m
2026-07-04 APZ102 - Jul 4, 17:55 UTCJul 5, 06:10 UTC12h 15m
2026-07-04 APZ101 - Jul 4, 04:20 UTCJul 4, 15:25 UTC11h 5m
2026-07-02 APZ102 - Jul 2, 18:05 UTCJul 3, 06:25 UTC12h 20m
2026-07-02 APZ101 - Jul 2, 04:25 UTCJul 2, 14:40 UTC10h 15m
2026-07-01 APZ132 - Jul 1, 05:50 UTCJul 1, 20:15 UTC14h 25m
2026-06-30 APZ131 ICN → EWR Jun 30, 12:35 UTCJul 1, 02:20 UTC13h 45m
2026-06-30 APZ152 - Jun 30, 07:40 UTCJun 30, 10:15 UTC2h 35m
2026-06-30 APZ152 - Jun 30, 00:49 UTCJun 30, 01:00 UTC10m
2026-06-29 APZ151 - Jun 29, 13:39 UTCJun 29, 21:39 UTC8h 0m
2026-06-28 APZ136 IAD → ICN Jun 28, 18:05 UTCJun 29, 08:44 UTC14h 40m
2026-06-28 APZ135 ICN → IAD Jun 28, 01:19 UTCJun 28, 14:19 UTC13h 0m
2026-06-26 APZ112 - Jun 26, 22:55 UTCJun 27, 11:09 UTC12h 15m
2026-06-26 APZ111 ICN → SFO Jun 26, 09:10 UTCJun 26, 19:00 UTC9h 50m
2026-06-25 APZ102 - Jun 25, 17:54 UTCJun 26, 06:25 UTC12h 30m
2026-06-25 APZ101 - Jun 25, 04:20 UTCJun 25, 14:29 UTC10h 10m
2026-06-24 APZ132 EWR → ICN Jun 24, 05:15 UTCJun 24, 19:39 UTC14h 25m
2026-06-23 APZ131 ICN → EWR Jun 23, 12:45 UTCJun 24, 02:09 UTC13h 25m
2026-06-22 APZ102 - Jun 22, 18:04 UTCJun 23, 06:09 UTC12h 5m
2026-06-22 APZ101 - Jun 22, 04:15 UTCJun 22, 14:40 UTC10h 25m
2026-06-20 APZ102 - Jun 20, 17:59 UTCJun 21, 05:54 UTC11h 55m
2026-06-20 APZ101 - Jun 20, 04:39 UTCJun 20, 15:24 UTC10h 45m
2026-06-18 APZ102 - Jun 18, 18:15 UTCJun 19, 06:10 UTC11h 54m
2026-06-18 APZ101 - Jun 18, 04:15 UTCJun 18, 15:05 UTC10h 50m
2026-06-17 APZ132 - Jun 17, 05:05 UTCJun 17, 19:05 UTC14h 0m
2026-06-16 APZ131 ICN → EWR Jun 16, 12:45 UTCJun 17, 02:00 UTC13h 16m
2026-06-15 APZ136 IAD → ICN Jun 15, 17:40 UTCJun 16, 08:15 UTC14h 35m
2026-06-15 APZ135 ICN → IAD Jun 15, 01:25 UTCJun 15, 14:30 UTC13h 5m
2026-06-14 APZ621 ICN → DAD Jun 14, 09:10 UTCJun 14, 20:00 UTC10h 50m
2026-06-13 APZ102 - Jun 13, 18:15 UTCJun 14, 06:20 UTC12h 5m
2026-06-13 APZ101 ICN → LAX Jun 13, 04:10 UTCJun 13, 14:20 UTC10h 10m
2026-06-11 APZ102 - Jun 11, 18:05 UTCJun 12, 06:35 UTC12h 31m
2026-06-11 APZ101 ICN → LAX Jun 11, 04:10 UTCJun 11, 14:30 UTC10h 20m
2026-06-09 APZ602 BKK → ICN Jun 9, 18:15 UTCJun 9, 20:50 UTC2h 35m
2026-06-09 APZ601 ICN → BKK Jun 9, 08:55 UTCJun 9, 14:00 UTC5h 5m
2026-06-08 APZ102 LAX → ICN Jun 8, 18:15 UTCJun 9, 07:20 UTC13h 5m
2026-06-08 APZ101 ICN → LAX Jun 8, 04:10 UTCJun 8, 14:25 UTC10h 15m
2026-06-07 APZ621 ICN → DAD Jun 7, 09:15 UTCJun 7, 19:50 UTC10h 35m
2026-06-06 APZ102 LAX → ICN Jun 6, 18:04 UTCJun 7, 06:45 UTC12h 40m
2026-06-06 APZ101 ICN → LAX Jun 6, 04:10 UTCJun 6, 14:25 UTC10h 15m
2026-06-04 APZ102 LAX → ICN Jun 4, 18:10 UTCJun 5, 06:35 UTC12h 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 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 5h 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 18 distinct callsigns, including APZ101, APZ102, APZ131, APZ132, APZ112.