Apparatus

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sensors Mode-S transponder

71C592

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

Currently assigned to HL8592 · BOEING 737 MAX 8

Hex
71C592
Octal
34342622
Decimal
7,456,146
Country
KR
Tail
HL8592
Type
B38M
No current signal · last broadcast Jul 26, 21:55 UTC
Flights observed
501
Distinct callsigns
20
Country
KR
Last broadcast
Jul 26, 21:55 UTC

Last known position

Most recent position reported by Mode-S 71C592.

Country allocation

The ICAO 24-bit address 71C592 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
JJA1106 Jeju Air 28 2026-07-21
JJA1105 Jeju Air 26 2026-07-21
JJA8402 Jeju Air 23 2026-07-21
JJA8401 Jeju Air 23 2026-07-20
JJA6013 Jeju Air 20 2026-07-24
JJA1104 - 18 2026-07-16
JJA1103 - 18 2026-07-16
JJA6014 Jeju Air 14 2026-07-24
JJA2108 - 13 2026-07-18
JJA2107 Jeju Air 13 2026-07-18
JJA6101 - 12 2026-07-13
JJA1802 Jeju Air 12 2026-07-24
JJA1406 Jeju Air 12 2026-07-23
JJA1405 Jeju Air 12 2026-07-23
JJA1404 - 12 2026-07-15
JJA6102 - 11 2026-07-13
JJA2661 - 11 2026-06-14
JJA1801 Jeju Air 11 2026-07-24
JJA1403 - 11 2026-07-15
JJA1203 Jeju Air 11 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JJA2303 ICN → CXR Jul 26, 13:25 UTCJul 26, 21:55 UTC8h 30m
2026-07-26 JJA1204 NGO → ICN Jul 26, 09:10 UTCJul 26, 10:35 UTC1h 25m
2026-07-26 JJA1203 ICN → NGO Jul 26, 06:25 UTCJul 26, 07:45 UTC1h 21m
2026-07-26 JJA8502 WEH → ICN Jul 26, 04:20 UTCJul 26, 04:45 UTC25m
2026-07-26 JJA8501 ICN → WEH Jul 26, 01:50 UTCJul 26, 02:05 UTC15m
2026-07-25 JJA2303 ICN → CXR Jul 25, 12:55 UTCJul 26, 00:10 UTC11h 15m
2026-07-25 JJA2212 DAD → ICN Jul 25, 11:05 UTCJul 25, 11:30 UTC25m
2026-07-25 JJA2211 ICN → DAD Jul 25, 00:50 UTCJul 25, 08:00 UTC7h 10m
2026-07-24 JJA6014 HKG → ICN Jul 24, 17:05 UTCJul 24, 20:15 UTC3h 10m
2026-07-24 JJA6013 ICN → HKG Jul 24, 12:15 UTCJul 24, 15:20 UTC3h 5m
2026-07-24 JJA1802 OKA → ICN Jul 24, 08:05 UTCJul 24, 10:00 UTC1h 55m
2026-07-24 JJA1801 ICN → OKA Jul 24, 06:10 UTCJul 24, 06:35 UTC25m
2026-07-24 JJA1801 ICN → OKA Jul 24, 04:50 UTCJul 24, 05:20 UTC30m
2026-07-24 JJA1302 ICN → KIX Jul 24, 01:20 UTCJul 24, 02:35 UTC1h 15m
2026-07-23 JJA1301 KIX → ICN Jul 23, 22:20 UTCJul 23, 23:45 UTC1h 25m
2026-07-23 JJA6014 HKG → ICN Jul 23, 17:00 UTCJul 23, 20:05 UTC3h 5m
2026-07-23 JJA6013 ICN → HKG Jul 23, 12:15 UTCJul 23, 15:25 UTC3h 10m
2026-07-23 JJA1406 FUK → ICN Jul 23, 09:05 UTCJul 23, 10:00 UTC55m
2026-07-23 JJA1405 ICN → FUK Jul 23, 06:45 UTCJul 23, 07:50 UTC1h 5m
2026-07-23 JJA1502 CTS → ICN Jul 23, 02:15 UTCJul 23, 04:50 UTC2h 35m
2026-07-22 JJA1501 ICN → CTS Jul 22, 22:35 UTCJul 23, 00:55 UTC2h 20m
2026-07-22 JJA1108 NRT → ICN Jul 22, 11:10 UTCJul 22, 12:25 UTC1h 15m
2026-07-22 JJA8502 WEH → ICN Jul 22, 04:30 UTCJul 22, 04:50 UTC20m
2026-07-22 JJA8501 ICN → WEH Jul 22, 01:55 UTCJul 22, 02:20 UTC25m
2026-07-21 JJA2304 ICN → ICN Jul 21, 12:55 UTCJul 21, 23:20 UTC10h 25m
2026-07-21 JJA1106 NRT → ICN Jul 21, 08:25 UTCJul 21, 10:25 UTC2h 0m
2026-07-21 JJA1105 NRT → ICN Jul 21, 04:45 UTCJul 21, 06:55 UTC2h 10m
2026-07-21 JJA8402 TAO → ICN Jul 21, 02:55 UTCJul 21, 03:10 UTC15m
2026-07-20 JJA8401 ICN → TAO Jul 20, 23:30 UTCJul 21, 00:05 UTC34m
2026-07-20 JJA1802 OKA → ICN Jul 20, 08:50 UTCJul 20, 10:40 UTC1h 50m
2026-07-20 JJA1801 ICN → OKA Jul 20, 05:45 UTCJul 20, 07:25 UTC1h 40m
2026-07-20 JJA1302 ICN → KIX Jul 20, 02:45 UTCJul 20, 04:05 UTC1h 20m
2026-07-19 JJA1301 KIX → ICN Jul 19, 23:10 UTCJul 20, 00:35 UTC1h 25m
2026-07-19 JJA6014 HKG → ICN Jul 19, 16:55 UTCJul 19, 20:30 UTC3h 35m
2026-07-19 JJA6013 ICN → HKG Jul 19, 12:10 UTCJul 19, 15:15 UTC3h 5m
2026-07-19 JJA1106 NRT → ICN Jul 19, 08:30 UTCJul 19, 10:20 UTC1h 50m
2026-07-19 JJA1105 NRT → ICN Jul 19, 04:35 UTCJul 19, 06:40 UTC2h 5m
2026-07-19 JJA8402 - Jul 19, 02:50 UTCJul 19, 03:15 UTC25m
2026-07-18 JJA8401 ICN → TAO Jul 18, 23:25 UTCJul 19, 00:00 UTC35m
2026-07-18 JJA2108 - Jul 18, 18:10 UTCJul 18, 21:35 UTC3h 25m
2026-07-18 JJA2107 ICN → CRK Jul 18, 12:50 UTCJul 18, 16:05 UTC3h 15m
2026-07-18 JJA1406 - Jul 18, 09:20 UTCJul 18, 10:20 UTC1h 0m
2026-07-18 JJA1405 ICN → FUK Jul 18, 06:50 UTCJul 18, 08:00 UTC1h 10m
2026-07-18 JJA1502 - Jul 18, 02:05 UTCJul 18, 04:25 UTC2h 21m
2026-07-17 JJA1501 ICN → CTS Jul 17, 22:29 UTCJul 18, 00:50 UTC2h 20m
2026-07-17 JJA1106 NRT → ICN Jul 17, 08:30 UTCJul 17, 10:20 UTC1h 50m
2026-07-17 JJA1105 ICN → NRT Jul 17, 04:44 UTCJul 17, 06:45 UTC2h 0m
2026-07-17 JJA8402 - Jul 17, 02:54 UTCJul 17, 03:30 UTC35m
2026-07-16 JJA8401 - Jul 16, 23:20 UTCJul 16, 23:44 UTC25m
2026-07-16 JJA2516 - Jul 16, 16:09 UTCJul 16, 21:30 UTC5h 20m

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 HL8592 page for operator, model, and routing details .

Mode-S 71C592 frequently asked

What is Mode-S code 71C592?
71C592 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8592.
Where is Mode-S 71C592 registered?
Mode-S code 71C592 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 71C592 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C592, octal 34342622, decimal 7,456,146.
What flights does 71C592 operate?
Mode-S 71C592 has broadcast 20 distinct callsigns, including JJA1106, JJA1105, JJA8402, JJA8401, JJA6013.