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sensors Mode-S transponder

71C719

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

Currently assigned to HL8719 · BOEING 737 MAX 8

Hex
71C719
Octal
34343431
Decimal
7,456,537
Country
KR
Tail
HL8719
Type
B38M
Broadcasting now · callsign JJA1107 · 31,000 ft
Flights observed
470
Distinct callsigns
20
Country
KR
Last broadcast
2h ago

Current position

71C719 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 71C719 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
JJA126 Jeju Air 20 2026-04-30
JJA134 Jeju Air 18 2026-04-30
JJA125 Jeju Air 18 2026-04-30
JJA135 Jeju Air 17 2026-04-30
JJA118 Jeju Air 17 2026-04-30
JJA1103 - 17 2026-07-10
JJA113 Jeju Air 16 2026-04-30
JJA1104 - 16 2026-07-13
JJA105 Jeju Air 16 2026-04-29
JJA104 Jeju Air 16 2026-04-30
JJA6013 - 15 2026-07-13
JJA2662 - 13 2026-07-12
JJA1404 - 13 2026-07-06
JJA1403 - 13 2026-07-06
JJA2661 - 11 2026-07-12
JJA1204 - 11 2026-07-06
JJA1203 - 11 2026-07-06
JJA6014 - 10 2026-07-13
JJA8401 - 9 2026-07-07
JJA2516 - 9 2026-06-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 JJA8502 - Jul 14, 04:35 UTCJul 14, 05:00 UTC25m
2026-07-14 JJA8501 - Jul 14, 01:45 UTCJul 14, 02:05 UTC20m
2026-07-13 JJA6014 HKG → ICN Jul 13, 17:10 UTCJul 13, 20:25 UTC3h 15m
2026-07-13 JJA6013 ICN → HKG Jul 13, 12:40 UTCJul 13, 15:45 UTC3h 5m
2026-07-13 JJA1104 NRT → ICN Jul 13, 05:50 UTCJul 13, 07:50 UTC2h 0m
2026-07-13 JJA1153 PUS → NRT Jul 13, 02:15 UTCJul 13, 04:00 UTC1h 45m
2026-07-12 JJA2662 - Jul 12, 22:15 UTCJul 12, 22:40 UTC25m
2026-07-12 JJA2662 - Jul 12, 20:15 UTCJul 12, 21:10 UTC55m
2026-07-12 JJA2662 - Jul 12, 16:50 UTCJul 12, 17:01 UTC10m
2026-07-12 JJA2661 - Jul 12, 14:50 UTCJul 12, 15:15 UTC25m
2026-07-12 JJA2661 - Jul 12, 11:01 UTCJul 12, 11:50 UTC50m
2026-07-12 JJA2661 - Jul 12, 09:30 UTCJul 12, 09:45 UTC15m
2026-07-12 JJA1154 NRT → PUS Jul 12, 05:40 UTCJul 12, 07:20 UTC1h 40m
2026-07-12 JJA1153 PUS → NRT Jul 12, 02:15 UTCJul 12, 04:01 UTC1h 45m
2026-07-11 JJA1154 NRT → PUS Jul 11, 05:45 UTCJul 11, 07:25 UTC1h 40m
2026-07-11 JJA1153 PUS → NRT Jul 11, 02:05 UTCJul 11, 03:40 UTC1h 35m
2026-07-10 JJA2662 - Jul 10, 22:05 UTCJul 10, 22:30 UTC25m
2026-07-10 JJA2662 - Jul 10, 20:05 UTCJul 10, 20:50 UTC45m
2026-07-10 JJA2662 - Jul 10, 16:45 UTCJul 10, 16:55 UTC10m
2026-07-10 JJA2661 - Jul 10, 14:30 UTCJul 10, 14:50 UTC20m
2026-07-10 JJA2661 - Jul 10, 10:35 UTCJul 10, 11:30 UTC55m
2026-07-10 JJA2661 - Jul 10, 09:10 UTCJul 10, 09:25 UTC15m
2026-07-10 JJA1154 NRT → PUS Jul 10, 05:45 UTCJul 10, 07:25 UTC1h 40m
2026-07-10 JJA1103 ICN → NRT Jul 10, 01:50 UTCJul 10, 03:50 UTC2h 0m
2026-07-09 JJA2114 ICN → ICN Jul 9, 12:25 UTCJul 9, 22:15 UTC9h 50m
2026-07-09 JJA2212 ICN → ICN Jul 9, 00:30 UTCJul 9, 10:50 UTC10h 20m
2026-07-08 JJA2114 ICN → ICN Jul 8, 12:15 UTCJul 8, 22:15 UTC10h 0m
2026-07-08 JJA1106 NRT → ICN Jul 8, 08:20 UTCJul 8, 10:20 UTC2h 0m
2026-07-08 JJA1105 ICN → NRT Jul 8, 04:40 UTCJul 8, 06:50 UTC2h 10m
2026-07-07 JJA8401 ICN → ICN Jul 7, 23:35 UTCJul 8, 03:20 UTC3h 45m
2026-07-07 JJA1108 NRT → ICN Jul 7, 10:05 UTCJul 7, 12:05 UTC2h 0m
2026-07-07 JJA1107 ICN → NRT Jul 7, 06:20 UTCJul 7, 08:20 UTC2h 0m
2026-07-07 JJA8502 - Jul 7, 04:10 UTCJul 7, 04:30 UTC20m
2026-07-07 JJA8501 - Jul 7, 01:45 UTCJul 7, 02:05 UTC20m
2026-07-06 JJA1204 - Jul 6, 09:25 UTCJul 6, 11:00 UTC1h 35m
2026-07-06 JJA1203 - Jul 6, 06:30 UTCJul 6, 07:50 UTC1h 20m
2026-07-06 JJA1404 - Jul 6, 03:30 UTCJul 6, 04:35 UTC1h 5m
2026-07-06 JJA1403 - Jul 6, 01:00 UTCJul 6, 01:45 UTC45m
2026-07-05 JJA2316 PQC → ICN Jul 5, 09:00 UTCJul 5, 20:40 UTC11h 40m
2026-07-05 JJA1176 NRT → ICN Jul 5, 05:25 UTCJul 5, 07:35 UTC2h 10m
2026-07-05 JJA1175 ICN → NRT Jul 5, 01:15 UTCJul 5, 03:15 UTC2h 0m
2026-07-04 JJA2114 ICN → ICN Jul 4, 12:15 UTCJul 4, 22:05 UTC9h 50m
2026-07-04 JJA2211 ICN → ICN Jul 4, 00:35 UTCJul 4, 10:30 UTC9h 55m
2026-07-03 JJA1204 - Jul 3, 09:25 UTCJul 3, 10:50 UTC1h 25m
2026-07-03 JJA1203 - Jul 3, 06:25 UTCJul 3, 07:45 UTC1h 20m
2026-07-03 JJA1404 - Jul 3, 03:30 UTCJul 3, 04:30 UTC1h 0m
2026-07-03 JJA1403 - Jul 3, 01:05 UTCJul 3, 01:50 UTC45m
2026-07-02 JJA2624 - Jul 2, 20:25 UTCJul 2, 23:20 UTC2h 55m
2026-07-02 JJA2623 - Jul 2, 15:20 UTCJul 2, 15:45 UTC25m
2026-07-02 JJA2623 - Jul 2, 09:50 UTCJul 2, 12:35 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 HL8719 page for operator, model, and routing details .

Mode-S 71C719 frequently asked

What is Mode-S code 71C719?
71C719 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8719.
Where is Mode-S 71C719 registered?
Mode-S code 71C719 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 71C719 broadcasting right now?
Yes. Mode-S 71C719 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C719, octal 34343431, decimal 7,456,537.
What flights does 71C719 operate?
Mode-S 71C719 has broadcast 20 distinct callsigns, including JJA126, JJA134, JJA125, JJA135, JJA118.