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sensors Mode-S transponder

71C593

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

Currently assigned to HL8593 · BOEING 737 MAX 8

Hex
71C593
Octal
34342623
Decimal
7,456,147
Country
KR
Tail
HL8593
Type
B38M
Broadcasting now · callsign JJA1203 · 29,000 ft
Flights observed
441
Distinct callsigns
20
Country
KR
Last broadcast
Jul 26, 20:10 UTC

Current position

71C593 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 71C593 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
JJA2661 - 35 2026-07-09
JJA2662 - 31 2026-07-09
JJA1154 - 28 2026-07-09
JJA1153 - 27 2026-07-10
JJA1203 - 18 2026-07-13
JJA1104 Jeju Air 18 2026-07-25
JJA6101 Jeju Air 17 2026-07-24
JJA1103 Jeju Air 16 2026-07-25
JJA6102 Jeju Air 15 2026-07-24
JJA1106 Jeju Air 14 2026-07-26
JJA1204 - 13 2026-07-13
JJA1105 Jeju Air 13 2026-07-26
JJA8402 Jeju Air 11 2026-07-26
JJA8401 Jeju Air 11 2026-07-25
JJA1404 - 11 2026-07-13
JJA1403 - 11 2026-07-13
JJA6013 Jeju Air 10 2026-07-26
JJA1802 - 10 2026-06-15
JJA2114 - 8 2026-07-19
JJA1801 Jeju Air 8 2026-05-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JJA6014 HKG → ICN Jul 26, 16:55 UTCJul 26, 20:05 UTC3h 10m
2026-07-26 JJA6013 ICN → HKG Jul 26, 15:15 UTCJul 26, 15:25 UTC10m
2026-07-26 JJA6013 ICN → HKG Jul 26, 12:10 UTCJul 26, 14:40 UTC2h 30m
2026-07-26 JJA1106 NRT → ICN Jul 26, 08:30 UTCJul 26, 10:30 UTC2h 0m
2026-07-26 JJA1105 NRT → ICN Jul 26, 04:55 UTCJul 26, 06:55 UTC2h 1m
2026-07-26 JJA8402 TAO → ICN Jul 26, 02:45 UTCJul 26, 03:20 UTC35m
2026-07-25 JJA8401 ICN → TAO Jul 25, 23:25 UTCJul 25, 23:55 UTC30m
2026-07-25 JJA2316 PQC → ICN Jul 25, 09:25 UTCJul 25, 21:25 UTC12h 0m
2026-07-25 JJA1104 NRT → ICN Jul 25, 05:45 UTCJul 25, 07:40 UTC1h 55m
2026-07-25 JJA1103 NRT → ICN Jul 25, 02:05 UTCJul 25, 04:00 UTC1h 55m
2026-07-24 JJA8904 YNJ → ICN Jul 24, 13:20 UTCJul 24, 13:45 UTC25m
2026-07-24 JJA8903 ICN → YNJ Jul 24, 08:30 UTCJul 24, 09:05 UTC35m
2026-07-24 JJA6102 TPE → ICN Jul 24, 04:45 UTCJul 24, 07:00 UTC2h 15m
2026-07-24 JJA6101 ICN → TPE Jul 24, 02:40 UTCJul 24, 02:55 UTC15m
2026-07-24 JJA6101 ICN → TPE Jul 24, 00:55 UTCJul 24, 01:25 UTC30m
2026-07-23 JJA2316 PQC → ICN Jul 23, 08:35 UTCJul 23, 20:30 UTC11h 55m
2026-07-23 JJA8502 WEH → ICN Jul 23, 06:30 UTCJul 23, 06:55 UTC25m
2026-07-23 JJA8501 ICN → WEH Jul 23, 02:25 UTCJul 23, 02:40 UTC15m
2026-07-22 JJA2504 BKK → ICN Jul 22, 19:40 UTCJul 23, 00:40 UTC5h 0m
2026-07-22 JJA2503 ICN → BKK Jul 22, 12:30 UTCJul 22, 17:40 UTC5h 10m
2026-07-22 JJA1502 CTS → ICN Jul 22, 03:15 UTCJul 22, 05:25 UTC2h 10m
2026-07-21 JJA1501 ICN → CTS Jul 21, 22:30 UTCJul 22, 00:45 UTC2h 15m
2026-07-21 JJA1308 KIX → ICN Jul 21, 11:05 UTCJul 21, 12:30 UTC1h 25m
2026-07-21 JJA1307 ICN → KIX Jul 21, 08:25 UTCJul 21, 09:55 UTC1h 30m
2026-07-21 JJA6102 TPE → ICN Jul 21, 05:40 UTCJul 21, 06:30 UTC50m
2026-07-21 JJA6102 TPE → ICN Jul 21, 04:10 UTCJul 21, 04:25 UTC15m
2026-07-21 JJA6101 ICN → TPE Jul 21, 02:15 UTCJul 21, 02:35 UTC20m
2026-07-21 JJA6101 ICN → TPE Jul 21, 00:25 UTCJul 21, 01:05 UTC40m
2026-07-20 JJA2108 - Jul 20, 17:50 UTCJul 20, 21:20 UTC3h 30m
2026-07-20 JJA2107 ICN → CRK Jul 20, 13:00 UTCJul 20, 16:15 UTC3h 15m
2026-07-20 JJA2212 DAD → ICN Jul 20, 00:45 UTCJul 20, 10:55 UTC10h 10m
2026-07-19 JJA2114 ICN → ICN Jul 19, 12:20 UTCJul 19, 22:05 UTC9h 45m
2026-07-19 JJA2211 ICN → DAD Jul 19, 00:35 UTCJul 19, 10:40 UTC10h 5m
2026-07-18 JJA6014 HKG → ICN Jul 18, 17:00 UTCJul 18, 20:05 UTC3h 5m
2026-07-18 JJA6013 ICN → HKG Jul 18, 12:10 UTCJul 18, 15:15 UTC3h 5m
2026-07-18 JJA1106 NRT → ICN Jul 18, 08:15 UTCJul 18, 10:10 UTC1h 55m
2026-07-18 JJA1105 ICN → NRT Jul 18, 04:45 UTCJul 18, 06:50 UTC2h 5m
2026-07-18 JJA8402 - Jul 18, 02:55 UTCJul 18, 03:25 UTC30m
2026-07-17 JJA8401 ICN → TAO Jul 17, 23:35 UTCJul 18, 00:04 UTC30m
2026-07-17 JJA1308 KIX → ICN Jul 17, 11:10 UTCJul 17, 12:25 UTC1h 15m
2026-07-17 JJA1307 ICN → KIX Jul 17, 08:25 UTCJul 17, 09:55 UTC1h 30m
2026-07-17 JJA6102 TPE → ICN Jul 17, 04:14 UTCJul 17, 06:25 UTC2h 10m
2026-07-17 JJA6101 ICN → TPE Jul 17, 00:30 UTCJul 17, 02:34 UTC2h 5m
2026-07-16 JJA2114 ICN → ICN Jul 16, 12:30 UTCJul 16, 22:15 UTC9h 45m
2026-07-16 JJA2212 ICN → ICN Jul 16, 01:00 UTCJul 16, 10:59 UTC10h 0m
2026-07-15 JJA1108 NRT → ICN Jul 15, 10:15 UTCJul 15, 12:10 UTC1h 55m
2026-07-15 JJA1107 ICN → NRT Jul 15, 06:15 UTCJul 15, 08:10 UTC1h 55m
2026-07-15 JJA8502 - Jul 15, 04:20 UTCJul 15, 04:45 UTC25m
2026-07-15 JJA8501 - Jul 15, 01:45 UTCJul 15, 02:00 UTC15m
2026-07-14 JJA1308 - Jul 14, 11:05 UTCJul 14, 13:50 UTC2h 45m

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 HL8593 page for operator, model, and routing details .

Mode-S 71C593 frequently asked

What is Mode-S code 71C593?
71C593 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8593.
Where is Mode-S 71C593 registered?
Mode-S code 71C593 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 71C593 broadcasting right now?
Yes. Mode-S 71C593 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C593, octal 34342623, decimal 7,456,147.
What flights does 71C593 operate?
Mode-S 71C593 has broadcast 20 distinct callsigns, including JJA2661, JJA2662, JJA1154, JJA1153, JJA1203.