Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

71C701

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

Currently assigned to HL8701 · BOEING 787-9 Dreamliner

Hex
71C701
Octal
34343401
Decimal
7,456,513
Country
KR
Tail
HL8701
Type
B789
No current signal · last broadcast Jul 26, 15:05 UTC
Flights observed
184
Distinct callsigns
20
Country
KR
Last broadcast
Jul 26, 15:05 UTC

Last known position

Most recent position reported by Mode-S 71C701.

Country allocation

The ICAO 24-bit address 71C701 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
APZ801 Air Premiea 21 2026-07-26
APZ104 Air Premiea 20 2026-07-23
APZ103 Air Premiea 20 2026-07-22
APZ151 - 16 2026-07-20
APZ802 Air Premiea 15 2026-07-26
APZ152 Air Premiea 14 2026-07-21
APZ111 Air Premiea 12 2026-07-24
APZ132 - 11 2026-07-14
APZ112 Air Premiea 10 2026-07-25
APZ131 - 9 2026-07-13
APZ732 Air Premiea 7 2026-07-24
APZ731 Air Premiea 7 2026-07-24
APZ736 - 3 2026-07-16
APZ735 - 3 2026-07-16
APZ734 - 3 2026-06-30
APZ602 - 3 2026-06-30
APZ601 - 3 2026-06-30
APZ733 - 2 2026-06-30
APZ136 Air Premiea 2 2026-05-18
APZ135 Air Premiea 2 2026-05-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 APZ802 HKG → ICN Jul 26, 12:00 UTCJul 26, 15:00 UTC3h 0m
2026-07-26 APZ801 ICN → HKG Jul 26, 06:45 UTCJul 26, 09:40 UTC2h 55m
2026-07-25 APZ112 SFO → ICN Jul 25, 00:25 UTCJul 25, 11:35 UTC11h 10m
2026-07-24 APZ111 ICN → SFO Jul 24, 10:35 UTCJul 24, 21:30 UTC10h 55m
2026-07-24 APZ732 NRT → ICN Jul 24, 04:50 UTCJul 24, 06:40 UTC1h 50m
2026-07-24 APZ731 ICN → NRT Jul 24, 01:20 UTCJul 24, 03:15 UTC1h 55m
2026-07-23 APZ104 LAX → ICN Jul 23, 06:35 UTCJul 23, 18:15 UTC11h 40m
2026-07-22 APZ103 ICN → LAX Jul 22, 13:25 UTCJul 23, 00:45 UTC11h 20m
2026-07-21 APZ152 HNL → ICN Jul 21, 00:55 UTCJul 21, 10:00 UTC9h 5m
2026-07-20 APZ151 - Jul 20, 13:50 UTCJul 20, 22:10 UTC8h 20m
2026-07-20 APZ802 HKG → ICN Jul 20, 05:55 UTCJul 20, 09:00 UTC3h 5m
2026-07-20 APZ801 ICN → HKG Jul 20, 00:55 UTCJul 20, 04:20 UTC3h 25m
2026-07-18 APZ112 SFO → ICN Jul 18, 00:29 UTCJul 18, 11:30 UTC11h 1m
2026-07-17 APZ111 - Jul 17, 10:55 UTCJul 17, 21:55 UTC11h 0m
2026-07-17 APZ802 HKG → ICN Jul 17, 05:50 UTCJul 17, 08:54 UTC3h 5m
2026-07-17 APZ801 ICN → HKG Jul 17, 00:45 UTCJul 17, 03:55 UTC3h 10m
2026-07-16 APZ736 NRT → ICN Jul 16, 09:10 UTCJul 16, 10:59 UTC1h 50m
2026-07-16 APZ735 ICN → NRT Jul 16, 05:05 UTCJul 16, 07:00 UTC1h 55m
2026-07-14 APZ132 - Jul 14, 05:15 UTCJul 14, 20:05 UTC14h 50m
2026-07-13 APZ131 ICN → EWR Jul 13, 13:00 UTCJul 14, 02:35 UTC13h 35m
2026-07-11 APZ104 - Jul 11, 06:45 UTCJul 11, 18:40 UTC11h 55m
2026-07-10 APZ103 ICN → LAX Jul 10, 13:25 UTCJul 11, 01:10 UTC11h 45m
2026-07-10 APZ802 HKG → ICN Jul 10, 05:45 UTCJul 10, 08:55 UTC3h 10m
2026-07-10 APZ801 - Jul 10, 02:25 UTCJul 10, 03:55 UTC1h 30m
2026-07-10 APZ801 - Jul 10, 00:50 UTCJul 10, 01:25 UTC35m
2026-07-09 APZ621 ICN → ICN Jul 9, 09:15 UTCJul 9, 19:50 UTC10h 35m
2026-07-07 APZ104 LAX → ICN Jul 7, 06:50 UTCJul 7, 19:40 UTC12h 50m
2026-07-06 APZ103 ICN → LAX Jul 6, 13:40 UTCJul 7, 00:15 UTC10h 35m
2026-07-06 APZ802 HKG → ICN Jul 6, 06:30 UTCJul 6, 09:35 UTC3h 5m
2026-07-06 APZ801 - Jul 6, 01:35 UTCJul 6, 04:35 UTC3h 0m
2026-07-05 APZ802 HKG → ICN Jul 5, 05:55 UTCJul 5, 09:00 UTC3h 5m
2026-07-05 APZ801 - Jul 5, 03:55 UTCJul 5, 04:10 UTC15m
2026-07-05 APZ801 - Jul 5, 01:15 UTCJul 5, 03:25 UTC2h 10m
2026-07-04 APZ104 LAX → ICN Jul 4, 06:40 UTCJul 4, 18:45 UTC12h 5m
2026-07-03 APZ103 - Jul 3, 13:25 UTCJul 3, 23:50 UTC10h 25m
2026-07-02 APZ104 - Jul 2, 06:41 UTCJul 2, 19:25 UTC12h 44m
2026-07-01 APZ103 - Jul 1, 13:30 UTCJul 2, 00:05 UTC10h 35m
2026-07-01 APZ732 NRT → ICN Jul 1, 03:45 UTCJul 1, 05:50 UTC2h 5m
2026-07-01 APZ731 - Jul 1, 00:10 UTCJul 1, 02:00 UTC1h 50m
2026-06-30 APZ602 - Jun 30, 16:10 UTCJun 30, 21:00 UTC4h 50m
2026-06-30 APZ601 ICN → BKK Jun 30, 08:30 UTCJun 30, 13:20 UTC4h 50m
2026-06-30 APZ734 NRT → ICN Jun 30, 04:25 UTCJun 30, 06:25 UTC2h 0m
2026-06-30 APZ733 - Jun 30, 00:39 UTCJun 30, 02:30 UTC1h 51m
2026-06-28 APZ112 SFO → ICN Jun 28, 23:04 UTCJun 29, 10:59 UTC11h 55m
2026-06-28 APZ111 - Jun 28, 09:20 UTCJun 28, 19:04 UTC9h 45m
2026-06-27 APZ104 LAX → ICN Jun 27, 06:50 UTCJun 27, 19:19 UTC12h 30m
2026-06-26 APZ103 - Jun 26, 13:15 UTCJun 26, 23:30 UTC10h 15m
2026-06-26 APZ802 - Jun 26, 06:04 UTCJun 26, 09:05 UTC3h 0m
2026-06-26 APZ801 - Jun 26, 00:45 UTCJun 26, 03:45 UTC3h 0m
2026-06-25 APZ104 - Jun 25, 06:40 UTCJun 25, 19:05 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 HL8701 page for operator, model, and routing details .

Mode-S 71C701 frequently asked

What is Mode-S code 71C701?
71C701 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8701.
Where is Mode-S 71C701 registered?
Mode-S code 71C701 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 71C701 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 15:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C701, octal 34343401, decimal 7,456,513.
What flights does 71C701 operate?
Mode-S 71C701 has broadcast 20 distinct callsigns, including APZ801, APZ104, APZ103, APZ151, APZ802.