Apparatus

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sensors Mode-S transponder

71C078

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

Currently assigned to HL8078 · AIRBUS A-350-900

Hex
71C078
Octal
34340170
Decimal
7,454,840
Country
KR
Tail
HL8078
Type
A359
No current signal · last broadcast 4h ago
Flights observed
232
Distinct callsigns
20
Country
KR
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S 71C078.

Country allocation

The ICAO 24-bit address 71C078 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
AAR546 - 15 2026-06-19
AAR512 Asiana Airlines 14 2026-07-05
AAR545 - 12 2026-06-18
AAR521 Asiana Airlines 11 2026-06-20
AAR511 - 10 2026-07-04
AAR548 - 9 2026-07-13
AAR547 - 9 2026-07-12
AAR522 - 9 2026-06-21
AAR742 - 7 2026-07-05
AAR741 - 7 2026-07-05
AAR211 Asiana Airlines 7 2026-05-16
AAR761 Asiana Airlines 6 2026-05-10
AAR752 - 6 2026-07-13
AAR751 - 6 2026-07-13
AAR212 Asiana Airlines 6 2026-05-15
AAR133 - 6 2026-06-21
AAR111 - 6 2026-07-09
AAR733 - 5 2026-06-26
AAR204 - 5 2026-07-10
AAR203 - 5 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AAR561 - Jul 14, 06:00 UTCJul 14, 06:20 UTC20m
2026-07-14 AAR561 - Jul 14, 04:50 UTCJul 14, 05:10 UTC20m
2026-07-13 AAR752 - Jul 13, 18:15 UTCJul 13, 21:20 UTC3h 5m
2026-07-13 AAR752 - Jul 13, 15:05 UTCJul 13, 15:15 UTC10m
2026-07-13 AAR751 - Jul 13, 07:35 UTCJul 13, 13:05 UTC5h 30m
2026-07-13 AAR548 - Jul 13, 03:50 UTCJul 13, 04:15 UTC25m
2026-07-12 AAR548 - Jul 12, 18:15 UTCJul 13, 02:55 UTC8h 40m
2026-07-12 AAR547 - Jul 12, 05:10 UTCJul 12, 15:55 UTC10h 45m
2026-07-12 AAR547 - Jul 12, 04:01 UTCJul 12, 04:20 UTC20m
2026-07-11 AAR203 - Jul 11, 06:30 UTCJul 11, 18:35 UTC12h 5m
2026-07-10 AAR204 - Jul 10, 13:10 UTCJul 11, 00:10 UTC11h 0m
2026-07-10 AAR582 - Jul 10, 06:35 UTCJul 10, 07:00 UTC25m
2026-07-09 AAR582 - Jul 9, 20:35 UTCJul 10, 05:45 UTC9h 10m
2026-07-09 AAR581 - Jul 9, 06:50 UTCJul 9, 18:35 UTC11h 45m
2026-07-09 AAR581 - Jul 9, 05:35 UTCJul 9, 05:50 UTC15m
2026-07-09 AAR111 KIX → ICN Jul 9, 01:55 UTCJul 9, 03:15 UTC1h 20m
2026-07-08 AAR112 ICN → KIX Jul 8, 22:15 UTCJul 8, 23:35 UTC1h 20m
2026-07-08 AAR203 - Jul 8, 06:50 UTCJul 8, 19:05 UTC12h 15m
2026-07-07 AAR204 - Jul 7, 13:15 UTCJul 8, 00:10 UTC10h 55m
2026-07-07 AAR101 - Jul 7, 04:10 UTCJul 7, 06:05 UTC1h 55m
2026-07-06 AAR102 ICN → NRT Jul 6, 23:50 UTCJul 7, 01:55 UTC2h 5m
2026-07-06 AAR752 SIN → ICN Jul 6, 18:10 UTCJul 6, 21:20 UTC3h 10m
2026-07-06 AAR751 - Jul 6, 12:50 UTCJul 6, 13:10 UTC20m
2026-07-06 AAR751 - Jul 6, 07:45 UTCJul 6, 10:25 UTC2h 40m
2026-07-05 AAR742 - Jul 5, 19:00 UTCJul 6, 00:00 UTC5h 0m
2026-07-05 AAR741 ICN → BKK Jul 5, 11:00 UTCJul 5, 15:55 UTC4h 55m
2026-07-05 AAR512 BCN → ICN Jul 5, 06:10 UTCJul 5, 06:35 UTC25m
2026-07-04 AAR512 BCN → ICN Jul 4, 19:20 UTCJul 5, 05:20 UTC10h 0m
2026-07-04 AAR511 - Jul 4, 03:35 UTCJul 4, 16:50 UTC13h 15m
2026-07-03 AAR203 - Jul 3, 06:30 UTCJul 3, 19:05 UTC12h 35m
2026-07-02 AAR204 - Jul 2, 13:00 UTCJul 2, 23:15 UTC10h 15m
2026-07-02 AAR548 - Jul 2, 04:05 UTCJul 2, 04:25 UTC20m
2026-07-01 AAR548 - Jul 1, 18:20 UTCJul 1, 21:10 UTC2h 50m
2026-07-01 AAR547 - Jul 1, 04:20 UTCJul 1, 16:15 UTC11h 55m
2026-06-30 AAR742 - Jun 30, 18:45 UTCJun 30, 23:55 UTC5h 10m
2026-06-30 AAR741 ICN → BKK Jun 30, 11:25 UTCJun 30, 16:25 UTC5h 0m
2026-06-30 AAR512 BCN → ICN Jun 30, 06:40 UTCJun 30, 07:05 UTC25m
2026-06-29 AAR512 BCN → ICN Jun 29, 19:29 UTCJun 30, 05:50 UTC10h 21m
2026-06-29 AAR511 - Jun 29, 04:39 UTCJun 29, 16:55 UTC12h 15m
2026-06-29 AAR511 - Jun 29, 03:29 UTCJun 29, 03:44 UTC15m
2026-06-28 AAR742 - Jun 28, 18:44 UTCJun 28, 23:44 UTC5h 0m
2026-06-28 AAR741 ICN → BKK Jun 28, 11:04 UTCJun 28, 16:00 UTC4h 55m
2026-06-27 AAR502 - Jun 27, 17:44 UTCJun 28, 05:09 UTC11h 25m
2026-06-27 AAR501 - Jun 27, 02:45 UTCJun 27, 15:10 UTC12h 25m
2026-06-27 AAR501 - Jun 27, 01:35 UTCJun 27, 01:49 UTC15m
2026-06-26 AAR734 - Jun 26, 16:49 UTCJun 26, 20:29 UTC3h 40m
2026-06-26 AAR733 - Jun 26, 11:00 UTCJun 26, 14:39 UTC3h 40m
2026-06-23 AAR512 BCN → ICN Jun 23, 07:19 UTCJun 23, 07:45 UTC25m
2026-06-22 AAR512 BCN → ICN Jun 22, 20:19 UTCJun 23, 06:34 UTC10h 15m
2026-06-22 AAR511 - Jun 22, 05:49 UTCJun 22, 18:15 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 HL8078 page for operator, model, and routing details .

Mode-S 71C078 frequently asked

What is Mode-S code 71C078?
71C078 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8078.
Where is Mode-S 71C078 registered?
Mode-S code 71C078 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 71C078 broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C078, octal 34340170, decimal 7,454,840.
What flights does 71C078 operate?
Mode-S 71C078 has broadcast 20 distinct callsigns, including AAR546, AAR512, AAR545, AAR521, AAR511.