Apparatus

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sensors Mode-S transponder

71C598

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

Currently assigned to HL8598 · AIRBUS A-350-900

Hex
71C598
Octal
34342630
Decimal
7,456,152
Country
KR
Tail
HL8598
Type
A359
Broadcasting now · callsign KAL931 · 8,825 ft
Flights observed
196
Distinct callsigns
14
Country
KR
Last broadcast
22h ago

Current position

71C598 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 71C598 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 14 distinct

Callsign Airline Flights Last seen
KAL077 - 29 2026-07-04
KAL931 - 28 2026-07-13
KAL078 - 27 2026-07-04
KAL932 - 26 2026-07-14
KAL752 - 21 2026-07-05
KAL751 - 21 2026-07-05
KAL2011 Korean Air 12 2026-04-30
KAL724 - 10 2026-06-26
KAL2012 Korean Air 10 2026-04-30
KAL723 - 8 2026-06-26
KAL2028 Korean Air 1 2026-05-01
KAL2027 Korean Air 1 2026-05-01
KAL2022 - 1 2026-07-03
KAL2021 - 1 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 KAL932 - Jul 14, 05:45 UTCJul 14, 06:10 UTC25m
2026-07-13 KAL932 - Jul 13, 19:55 UTCJul 14, 04:55 UTC9h 0m
2026-07-13 KAL931 - Jul 13, 06:05 UTCJul 13, 17:10 UTC11h 5m
2026-07-13 KAL931 - Jul 13, 04:50 UTCJul 13, 05:10 UTC20m
2026-07-12 KAL932 - Jul 12, 05:40 UTCJul 12, 06:05 UTC25m
2026-07-11 KAL932 - Jul 11, 19:45 UTCJul 12, 04:50 UTC9h 5m
2026-07-11 KAL931 ICN → FCO Jul 11, 04:50 UTCJul 11, 17:15 UTC12h 25m
2026-07-05 KAL752 HND → ICN Jul 5, 17:15 UTCJul 5, 19:15 UTC2h 0m
2026-07-05 KAL751 - Jul 5, 11:50 UTCJul 5, 13:35 UTC1h 45m
2026-07-04 KAL078 YYZ → ICN Jul 4, 17:10 UTCJul 5, 06:40 UTC13h 30m
2026-07-04 KAL077 ICN → YYZ Jul 4, 01:05 UTCJul 4, 13:40 UTC12h 35m
2026-07-03 KAL752 HND → ICN Jul 3, 17:20 UTCJul 3, 19:20 UTC2h 0m
2026-07-03 KAL751 ICN → HND Jul 3, 12:00 UTCJul 3, 13:55 UTC1h 55m
2026-07-03 KAL2022 TPE → ICN Jul 3, 05:35 UTCJul 3, 07:45 UTC2h 10m
2026-07-03 KAL2021 ICN → TPE Jul 3, 02:05 UTCJul 3, 04:05 UTC2h 0m
2026-07-02 KAL752 HND → ICN Jul 2, 17:20 UTCJul 2, 19:25 UTC2h 5m
2026-07-02 KAL751 ICN → HND Jul 2, 11:45 UTCJul 2, 13:25 UTC1h 40m
2026-07-02 KAL932 - Jul 2, 06:00 UTCJul 2, 06:30 UTC30m
2026-07-01 KAL932 - Jul 1, 19:50 UTCJul 1, 23:15 UTC3h 25m
2026-07-01 KAL931 - Jul 1, 06:20 UTCJul 1, 17:20 UTC11h 0m
2026-07-01 KAL931 - Jul 1, 05:15 UTCJul 1, 05:25 UTC10m
2026-06-30 KAL752 - Jun 30, 17:15 UTCJun 30, 19:05 UTC1h 50m
2026-06-30 KAL751 ICN → HND Jun 30, 11:50 UTCJun 30, 13:40 UTC1h 50m
2026-06-29 KAL078 YYZ → ICN Jun 29, 17:14 UTCJun 30, 07:00 UTC13h 45m
2026-06-29 KAL077 ICN → YYZ Jun 29, 00:54 UTCJun 29, 13:19 UTC12h 25m
2026-06-28 KAL752 - Jun 28, 17:25 UTCJun 28, 19:20 UTC1h 55m
2026-06-28 KAL751 ICN → HND Jun 28, 11:59 UTCJun 28, 13:40 UTC1h 40m
2026-06-27 KAL078 - Jun 27, 17:25 UTCJun 28, 07:25 UTC14h 0m
2026-06-27 KAL077 ICN → YYZ Jun 27, 01:04 UTCJun 27, 13:20 UTC12h 15m
2026-06-26 KAL724 - Jun 26, 04:14 UTCJun 26, 05:35 UTC1h 20m
2026-06-26 KAL723 ICN → KIX Jun 26, 01:10 UTCJun 26, 02:34 UTC1h 25m
2026-06-25 KAL932 - Jun 25, 06:14 UTCJun 25, 06:35 UTC20m
2026-06-24 KAL932 - Jun 24, 20:20 UTCJun 25, 05:35 UTC9h 15m
2026-06-24 KAL931 - Jun 24, 06:29 UTCJun 24, 17:50 UTC11h 20m
2026-06-24 KAL931 - Jun 24, 05:15 UTCJun 24, 05:29 UTC15m
2026-06-23 KAL752 HND → ICN Jun 23, 17:20 UTCJun 23, 19:29 UTC2h 10m
2026-06-23 KAL751 ICN → HND Jun 23, 11:54 UTCJun 23, 13:34 UTC1h 40m
2026-06-22 KAL078 YYZ → ICN Jun 22, 17:10 UTCJun 23, 06:49 UTC13h 40m
2026-06-22 KAL077 ICN → YYZ Jun 22, 01:05 UTCJun 22, 13:29 UTC12h 25m
2026-06-20 KAL078 YYZ → ICN Jun 20, 17:10 UTCJun 21, 06:29 UTC13h 20m
2026-06-20 KAL077 ICN → YYZ Jun 20, 01:19 UTCJun 20, 14:09 UTC12h 50m
2026-06-19 KAL752 HND → ICN Jun 19, 17:19 UTCJun 19, 19:25 UTC2h 5m
2026-06-19 KAL751 ICN → HND Jun 19, 11:59 UTCJun 19, 13:50 UTC1h 50m
2026-06-19 KAL724 - Jun 19, 04:00 UTCJun 19, 05:19 UTC1h 20m
2026-06-19 KAL723 ICN → KIX Jun 19, 00:59 UTCJun 19, 02:24 UTC1h 25m
2026-06-18 KAL932 - Jun 18, 06:05 UTCJun 18, 06:25 UTC20m
2026-06-17 KAL932 - Jun 17, 19:45 UTCJun 17, 23:15 UTC3h 30m
2026-06-17 KAL931 - Jun 17, 10:05 UTCJun 17, 17:10 UTC7h 5m
2026-06-17 KAL931 - Jun 17, 04:50 UTCJun 17, 05:00 UTC10m
2026-06-16 KAL752 HND → ICN Jun 16, 17:15 UTCJun 16, 19:05 UTC1h 50m

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 HL8598 page for operator, model, and routing details .

Mode-S 71C598 frequently asked

What is Mode-S code 71C598?
71C598 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8598.
Where is Mode-S 71C598 registered?
Mode-S code 71C598 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 71C598 broadcasting right now?
Yes. Mode-S 71C598 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C598, octal 34342630, decimal 7,456,152.
What flights does 71C598 operate?
Mode-S 71C598 has broadcast 14 distinct callsigns, including KAL077, KAL931, KAL078, KAL932, KAL752.