Apparatus

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sensors Mode-S transponder

71C284

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

Currently assigned to HL8284 · BOEING 777-200

Hex
71C284
Octal
34341204
Decimal
7,455,364
Country
KR
Tail
HL8284
Type
B772
Broadcasting now · callsign AAR602 · 13,450 ft
Flights observed
214
Distinct callsigns
20
Country
KR
Last broadcast
21m ago

Current position

71C284 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 71C284 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
AAR232 Asiana Airlines 18 2026-06-07
AAR272 - 15 2026-07-12
AAR704 - 14 2026-07-09
AAR703 - 14 2026-07-09
AAR602 - 13 2026-07-14
AAR601 - 13 2026-07-13
AAR271 - 13 2026-07-13
AAR231 Asiana Airlines 12 2026-06-08
AAR372 - 10 2026-06-25
AAR730 - 9 2026-07-11
AAR551 Asiana Airlines 9 2026-05-29
AAR729 - 8 2026-07-11
AAR562 Asiana Airlines 7 2026-06-27
AAR561 - 6 2026-06-26
AAR552 Asiana Airlines 6 2026-05-30
AAR371 - 5 2026-06-25
AAR711 - 4 2026-06-30
AAR546 - 4 2026-07-08
AAR712 - 3 2026-06-30
AAR545 - 3 2026-07-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AAR602 - Jul 14, 11:35 UTCJul 14, 21:00 UTC9h 25m
2026-07-13 AAR601 - Jul 13, 23:25 UTCJul 14, 09:25 UTC10h 0m
2026-07-13 AAR271 BFI → ICN Jul 13, 07:30 UTCJul 13, 18:10 UTC10h 40m
2026-07-12 AAR272 ICN → SEA Jul 12, 12:50 UTCJul 12, 22:50 UTC10h 0m
2026-07-12 AAR370 - Jul 12, 05:30 UTCJul 12, 08:45 UTC3h 15m
2026-07-12 AAR369 - Jul 12, 00:20 UTCJul 12, 00:40 UTC20m
2026-07-11 AAR730 - Jul 11, 10:10 UTCJul 11, 10:55 UTC45m
2026-07-11 AAR730 - Jul 11, 07:10 UTCJul 11, 07:20 UTC10m
2026-07-11 AAR729 - Jul 11, 00:30 UTCJul 11, 01:10 UTC40m
2026-07-10 AAR602 SYD → ICN Jul 10, 11:25 UTCJul 10, 21:45 UTC10h 20m
2026-07-09 AAR601 - Jul 9, 23:25 UTCJul 10, 09:30 UTC10h 5m
2026-07-09 AAR704 - Jul 9, 16:15 UTCJul 9, 19:35 UTC3h 20m
2026-07-09 AAR703 ICN → MNL Jul 9, 11:00 UTCJul 9, 14:25 UTC3h 25m
2026-07-09 AAR101 - Jul 9, 04:45 UTCJul 9, 06:40 UTC1h 55m
2026-07-08 AAR102 - Jul 8, 23:45 UTCJul 9, 01:40 UTC1h 55m
2026-07-08 AAR704 - Jul 8, 16:10 UTCJul 8, 19:35 UTC3h 25m
2026-07-08 AAR703 - Jul 8, 10:45 UTCJul 8, 14:15 UTC3h 30m
2026-07-08 AAR546 - Jul 8, 03:35 UTCJul 8, 03:55 UTC20m
2026-07-07 AAR546 - Jul 7, 17:20 UTCJul 8, 02:45 UTC9h 25m
2026-07-07 AAR545 - Jul 7, 03:30 UTCJul 7, 14:50 UTC11h 20m
2026-07-07 AAR545 - Jul 7, 02:15 UTCJul 7, 02:30 UTC15m
2026-07-06 AAR734 - Jul 6, 19:50 UTCJul 6, 20:35 UTC45m
2026-07-06 AAR733 - Jul 6, 14:30 UTCJul 6, 14:40 UTC10m
2026-07-06 AAR733 - Jul 6, 10:55 UTCJul 6, 11:35 UTC40m
2026-07-06 AAR546 - Jul 6, 04:00 UTCJul 6, 04:20 UTC20m
2026-07-05 AAR546 - Jul 5, 17:30 UTCJul 6, 03:05 UTC9h 35m
2026-07-05 AAR545 - Jul 5, 02:20 UTCJul 5, 14:35 UTC12h 15m
2026-07-01 AAR271 - Jul 1, 07:25 UTCJul 1, 18:50 UTC11h 25m
2026-06-30 AAR272 ICN → SEA Jun 30, 12:50 UTCJun 30, 22:10 UTC9h 20m
2026-06-30 AAR712 - Jun 30, 04:45 UTCJun 30, 06:55 UTC2h 10m
2026-06-30 AAR711 ICN → TPE Jun 30, 00:04 UTCJun 30, 02:20 UTC2h 16m
2026-06-29 AAR271 SEA → ICN Jun 29, 08:09 UTCJun 29, 19:00 UTC10h 50m
2026-06-28 AAR272 - Jun 28, 12:44 UTCJun 28, 22:04 UTC9h 20m
2026-06-28 AAR730 - Jun 28, 06:44 UTCJun 28, 10:35 UTC3h 50m
2026-06-28 AAR729 - Jun 28, 00:50 UTCJun 28, 04:29 UTC3h 40m
2026-06-27 AAR704 MNL → ICN Jun 27, 16:04 UTCJun 27, 19:19 UTC3h 15m
2026-06-27 AAR703 - Jun 27, 10:54 UTCJun 27, 14:35 UTC3h 40m
2026-06-27 AAR562 FCO → ICN Jun 27, 06:25 UTCJun 27, 06:50 UTC25m
2026-06-26 AAR562 FCO → ICN Jun 26, 20:04 UTCJun 27, 05:29 UTC9h 25m
2026-06-26 AAR561 - Jun 26, 06:15 UTCJun 26, 17:40 UTC11h 25m
2026-06-26 AAR561 - Jun 26, 05:05 UTCJun 26, 05:10 UTC5m
2026-06-25 AAR372 - Jun 25, 08:40 UTCJun 25, 09:25 UTC45m
2026-06-25 AAR372 - Jun 25, 06:25 UTCJun 25, 06:35 UTC10m
2026-06-25 AAR371 - Jun 25, 01:19 UTCJun 25, 02:05 UTC45m
2026-06-24 AAR704 MNL → ICN Jun 24, 16:09 UTCJun 24, 19:34 UTC3h 25m
2026-06-24 AAR703 - Jun 24, 10:59 UTCJun 24, 14:24 UTC3h 25m
2026-06-24 AAR562 FCO → ICN Jun 24, 06:10 UTCJun 24, 06:35 UTC25m
2026-06-23 AAR562 FCO → ICN Jun 23, 19:50 UTCJun 24, 05:20 UTC9h 30m
2026-06-23 AAR561 - Jun 23, 05:00 UTCJun 23, 17:44 UTC12h 45m
2026-06-22 AAR562 FCO → ICN Jun 22, 06:10 UTCJun 22, 06:39 UTC30m

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 HL8284 page for operator, model, and routing details .

Mode-S 71C284 frequently asked

What is Mode-S code 71C284?
71C284 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8284.
Where is Mode-S 71C284 registered?
Mode-S code 71C284 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 71C284 broadcasting right now?
Yes. Mode-S 71C284 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C284, octal 34341204, decimal 7,455,364.
What flights does 71C284 operate?
Mode-S 71C284 has broadcast 20 distinct callsigns, including AAR232, AAR272, AAR704, AAR703, AAR602.