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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 JJA6014 · 31,000 ft
Flights observed
522
Distinct callsigns
20
Country
KR
Last broadcast
Jul 26, 22:05 UTC

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
JJA1103 Jeju Air 18 2026-07-23
JJA6013 - 17 2026-07-16
JJA135 Jeju Air 17 2026-04-30
JJA118 Jeju Air 17 2026-04-30
JJA1104 Jeju Air 17 2026-07-23
JJA113 Jeju Air 16 2026-04-30
JJA105 Jeju Air 16 2026-04-29
JJA104 Jeju Air 16 2026-04-30
JJA1404 - 14 2026-07-18
JJA1403 Jeju Air 14 2026-07-18
JJA2662 - 13 2026-07-12
JJA6014 - 12 2026-07-16
JJA1406 Jeju Air 12 2026-07-20
JJA1204 - 12 2026-07-18
JJA1203 - 12 2026-07-18
JJA8401 Jeju Air 11 2026-07-23
JJA2661 - 11 2026-07-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JJA2114 CEB → ICN Jul 26, 12:35 UTCJul 26, 22:05 UTC9h 30m
2026-07-26 JJA2212 DAD → ICN Jul 26, 00:40 UTCJul 26, 10:55 UTC10h 16m
2026-07-25 JJA1110 NRT → ICN Jul 25, 11:40 UTCJul 25, 13:40 UTC2h 0m
2026-07-25 JJA1109 NRT → ICN Jul 25, 08:15 UTCJul 25, 10:15 UTC2h 0m
2026-07-25 JJA1176 NRT → ICN Jul 25, 04:40 UTCJul 25, 06:40 UTC2h 0m
2026-07-25 JJA1175 NRT → PUS Jul 25, 01:20 UTCJul 25, 03:25 UTC2h 5m
2026-07-24 JJA2304 CXR → ICN Jul 24, 12:50 UTCJul 24, 23:35 UTC10h 45m
2026-07-24 JJA1172 NRT → ICN Jul 24, 08:50 UTCJul 24, 10:50 UTC2h 0m
2026-07-24 JJA1171 ICN → NRT Jul 24, 05:35 UTCJul 24, 07:30 UTC1h 55m
2026-07-24 JJA8402 TAO → ICN Jul 24, 03:40 UTCJul 24, 04:05 UTC25m
2026-07-23 JJA8401 ICN → TAO Jul 23, 23:30 UTCJul 23, 23:50 UTC20m
2026-07-23 JJA2516 CNX → ICN Jul 23, 16:10 UTCJul 23, 21:15 UTC5h 5m
2026-07-23 JJA2515 - Jul 23, 09:35 UTCJul 23, 14:25 UTC4h 50m
2026-07-23 JJA1104 NRT → ICN Jul 23, 05:45 UTCJul 23, 07:45 UTC2h 0m
2026-07-23 JJA1103 NRT → ICN Jul 23, 01:55 UTCJul 23, 03:50 UTC1h 55m
2026-07-22 JJA2303 ICN → CXR Jul 22, 12:55 UTCJul 22, 23:30 UTC10h 35m
2026-07-22 JJA8402 TAO → ICN Jul 22, 02:45 UTCJul 22, 03:15 UTC30m
2026-07-21 JJA8401 ICN → TAO Jul 21, 23:25 UTCJul 21, 23:55 UTC30m
2026-07-21 JJA1108 NRT → ICN Jul 21, 10:00 UTCJul 21, 12:00 UTC2h 0m
2026-07-21 JJA1107 NRT → ICN Jul 21, 06:30 UTCJul 21, 08:35 UTC2h 5m
2026-07-21 JJA8502 WEH → ICN Jul 21, 04:35 UTCJul 21, 04:55 UTC20m
2026-07-21 JJA8501 ICN → WEH Jul 21, 02:00 UTCJul 21, 02:20 UTC20m
2026-07-20 JJA2114 ICN → ICN Jul 20, 12:20 UTCJul 20, 22:05 UTC9h 45m
2026-07-20 JJA1406 FUK → ICN Jul 20, 09:15 UTCJul 20, 10:15 UTC1h 0m
2026-07-20 JJA1405 ICN → FUK Jul 20, 06:55 UTCJul 20, 07:55 UTC1h 0m
2026-07-20 JJA1502 - Jul 20, 03:00 UTCJul 20, 05:35 UTC2h 35m
2026-07-19 JJA1501 - Jul 19, 22:30 UTCJul 20, 00:45 UTC2h 15m
2026-07-19 JJA2315 - Jul 19, 09:05 UTCJul 19, 20:40 UTC11h 35m
2026-07-19 JJA1176 NRT → ICN Jul 19, 04:45 UTCJul 19, 06:40 UTC1h 55m
2026-07-19 JJA1175 NRT → PUS Jul 19, 01:15 UTCJul 19, 03:15 UTC2h 0m
2026-07-18 JJA2304 ICN → ICN Jul 18, 12:50 UTCJul 18, 23:15 UTC10h 25m
2026-07-18 JJA1204 - Jul 18, 09:05 UTCJul 18, 10:30 UTC1h 25m
2026-07-18 JJA1203 - Jul 18, 06:20 UTCJul 18, 07:35 UTC1h 15m
2026-07-18 JJA1404 - Jul 18, 03:25 UTCJul 18, 04:25 UTC1h 0m
2026-07-18 JJA1403 ICN → FUK Jul 18, 01:05 UTCJul 18, 01:50 UTC45m
2026-07-17 JJA2315 ICN → ICN Jul 17, 09:15 UTCJul 17, 21:15 UTC12h 0m
2026-07-17 JJA1176 NRT → ICN Jul 17, 04:39 UTCJul 17, 06:35 UTC1h 55m
2026-07-17 JJA1175 ICN → NRT Jul 17, 01:15 UTCJul 17, 03:14 UTC2h 0m
2026-07-16 JJA6014 - Jul 16, 17:00 UTCJul 16, 20:25 UTC3h 25m
2026-07-16 JJA6013 ICN → HKG Jul 16, 12:05 UTCJul 16, 15:19 UTC3h 15m
2026-07-16 JJA1406 - Jul 16, 08:55 UTCJul 16, 09:55 UTC1h 0m
2026-07-16 JJA1405 - Jul 16, 06:35 UTCJul 16, 07:30 UTC55m
2026-07-16 JJA1502 - Jul 16, 02:15 UTCJul 16, 04:45 UTC2h 30m
2026-07-15 JJA1501 - Jul 15, 22:25 UTCJul 16, 00:30 UTC2h 5m
2026-07-15 JJA6014 - Jul 15, 17:00 UTCJul 15, 20:15 UTC3h 15m
2026-07-15 JJA6013 ICN → HKG Jul 15, 12:15 UTCJul 15, 15:20 UTC3h 5m
2026-07-15 JJA1406 - Jul 15, 09:00 UTCJul 15, 09:55 UTC55m
2026-07-15 JJA1405 - Jul 15, 06:30 UTCJul 15, 07:15 UTC45m
2026-07-15 JJA1502 - Jul 15, 02:00 UTCJul 15, 04:25 UTC2h 25m
2026-07-14 JJA1501 ICN → CTS Jul 14, 22:30 UTCJul 15, 00:50 UTC2h 19m

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, JJA1103, JJA6013.