Apparatus

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sensors Mode-S transponder

71C317

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

Currently assigned to HL8317 · BOEING 737-800

Hex
71C317
Octal
34341427
Decimal
7,455,511
Country
KR
Tail
HL8317
Type
B738
No current signal · last broadcast 10d ago
Flights observed
185
Distinct callsigns
20
Country
KR
Last broadcast
10d ago

Last known position

Most recent position reported by Mode-S 71C317.

Country allocation

The ICAO 24-bit address 71C317 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
JJA1876 Jeju Air 17 2026-05-29
JJA1875 Jeju Air 13 2026-05-28
JJA2211 Jeju Air 11 2026-05-07
JJA2212 Jeju Air 10 2026-05-28
JJA1176 Jeju Air 10 2026-06-01
JJA1391 Jeju Air 9 2026-05-21
JJA2108 Jeju Air 8 2026-05-23
JJA2107 Jeju Air 8 2026-05-23
JJA1392 Jeju Air 8 2026-05-22
JJA1175 Jeju Air 8 2026-06-01
JJA1110 - 7 2026-05-31
JJA1109 Jeju Air 7 2026-05-30
JJA8504 - 6 2026-05-30
JJA8503 Jeju Air 6 2026-05-30
JJA1394 Jeju Air 6 2026-05-22
JJA1393 Jeju Air 5 2026-05-22
JJA1513 Jeju Air 4 2026-05-26
JJA2702 Jeju Air 3 2026-05-06
JJA2701 Jeju Air 3 2026-04-25
JJA2315 - 3 2026-04-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-03 JJA317T - Jul 3, 04:45 UTCJul 3, 05:15 UTC30m
2026-07-03 JJA317T - Jul 3, 03:15 UTCJul 3, 03:55 UTC40m
2026-06-19 JJA140 - Jun 19, 12:49 UTCJun 19, 13:29 UTC40m
2026-06-19 JJA137 - Jun 19, 10:35 UTCJun 19, 11:14 UTC40m
2026-06-15 JJA140 CJU → GMP Jun 15, 12:49 UTCJun 15, 13:30 UTC40m
2026-06-15 JJA137 - Jun 15, 10:40 UTCJun 15, 11:15 UTC35m
2026-06-08 JJA140 CJU → GMP Jun 8, 12:55 UTCJun 8, 13:25 UTC30m
2026-06-08 JJA137 GMP → CJU Jun 8, 10:35 UTCJun 8, 11:00 UTC25m
2026-06-03 JJA1326 KIX → GMP Jun 3, 03:25 UTCJun 3, 04:40 UTC1h 15m
2026-06-03 JJA1325 GMP → KIX Jun 3, 00:25 UTCJun 3, 01:50 UTC1h 25m
2026-06-01 JJA158 CJU → GMP Jun 1, 11:50 UTCJun 1, 12:20 UTC30m
2026-06-01 JJA167 ICN → CJU Jun 1, 09:30 UTCJun 1, 09:55 UTC25m
2026-06-01 JJA1176 NRT → ICN Jun 1, 04:40 UTCJun 1, 06:40 UTC2h 0m
2026-06-01 JJA1175 NRT → PUS Jun 1, 00:50 UTCJun 1, 02:50 UTC2h 0m
2026-05-31 JJA1110 NRT → ICN May 31, 11:10 UTCMay 31, 13:15 UTC2h 5m
2026-05-30 JJA1109 NRT → ICN May 30, 23:40 UTCMay 31, 09:20 UTC9h 40m
2026-05-30 JJA8504 - May 30, 09:15 UTCMay 30, 09:35 UTC20m
2026-05-30 JJA8503 ICN → WEH May 30, 06:45 UTCMay 30, 07:05 UTC20m
2026-05-29 JJA1876 OKA → ICN May 29, 23:50 UTCMay 30, 05:10 UTC5h 20m
2026-05-29 JJA1110 NRT → ICN May 29, 11:05 UTCMay 29, 13:20 UTC2h 15m
2026-05-29 JJA1109 NRT → ICN May 29, 07:30 UTCMay 29, 09:25 UTC1h 55m
2026-05-29 JJA1876 OKA → ICN May 29, 04:35 UTCMay 29, 05:05 UTC30m
2026-05-28 JJA1875 ICN → OKA May 28, 23:30 UTCMay 29, 00:00 UTC30m
2026-05-28 JJA2212 DAD → ICN May 28, 00:40 UTCMay 28, 10:45 UTC10h 5m
2026-05-27 JJA1110 NRT → ICN May 27, 11:10 UTCMay 27, 13:05 UTC1h 55m
2026-05-27 JJA1109 NRT → ICN May 27, 07:40 UTCMay 27, 09:35 UTC1h 55m
2026-05-26 JJA1876 OKA → ICN May 26, 23:45 UTCMay 27, 05:40 UTC5h 55m
2026-05-26 JJA1514 HKD → ICN May 26, 09:04 UTCMay 26, 11:24 UTC2h 20m
2026-05-26 JJA1513 ICN → HKD May 26, 05:05 UTCMay 26, 07:10 UTC2h 5m
2026-05-26 JJA1474 - May 26, 02:04 UTCMay 26, 03:05 UTC1h 0m
2026-05-25 JJA1473 ICN → FUK May 25, 23:35 UTCMay 26, 00:04 UTC30m
2026-05-25 JJA8504 - May 25, 09:10 UTCMay 25, 09:35 UTC25m
2026-05-25 JJA8503 ICN → WEH May 25, 07:00 UTCMay 25, 07:15 UTC15m
2026-05-25 JJA1876 OKA → ICN May 25, 05:05 UTCMay 25, 05:45 UTC40m
2026-05-24 JJA1110 NRT → ICN May 24, 11:05 UTCMay 24, 13:10 UTC2h 5m
2026-05-24 JJA1109 NRT → ICN May 24, 07:40 UTCMay 24, 09:35 UTC1h 55m
2026-05-23 JJA1876 OKA → ICN May 23, 23:45 UTCMay 24, 05:40 UTC5h 55m
2026-05-23 JJA2108 HKG → ICN May 23, 17:50 UTCMay 23, 21:15 UTC3h 25m
2026-05-23 JJA2107 ICN → CRK May 23, 12:55 UTCMay 23, 16:15 UTC3h 20m
2026-05-23 JJA8504 - May 23, 09:25 UTCMay 23, 09:45 UTC20m
2026-05-23 JJA8503 ICN → WEH May 23, 07:10 UTCMay 23, 07:25 UTC15m
2026-05-22 JJA1876 OKA → ICN May 22, 23:55 UTCMay 23, 05:40 UTC5h 44m
2026-05-22 JJA1394 KIX → ICN May 22, 08:05 UTCMay 22, 09:25 UTC1h 20m
2026-05-22 JJA1393 ICN → KIX May 22, 05:20 UTCMay 22, 06:40 UTC1h 20m
2026-05-22 JJA1392 KIX → ICN May 22, 02:10 UTCMay 22, 03:35 UTC1h 25m
2026-05-21 JJA1391 ICN → KIX May 21, 23:10 UTCMay 22, 00:30 UTC1h 20m
2026-05-21 JJA2212 DAD → ICN May 21, 00:40 UTCMay 21, 10:30 UTC9h 50m
2026-05-20 JJA2108 HKG → ICN May 20, 18:05 UTCMay 20, 21:35 UTC3h 30m
2026-05-20 JJA2107 ICN → CRK May 20, 12:55 UTCMay 20, 16:40 UTC3h 45m
2026-05-20 JJA1392 KIX → ICN May 20, 02:05 UTCMay 20, 03:35 UTC1h 30m

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 HL8317 page for operator, model, and routing details .

Mode-S 71C317 frequently asked

What is Mode-S code 71C317?
71C317 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8317.
Where is Mode-S 71C317 registered?
Mode-S code 71C317 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 71C317 broadcasting right now?
No active broadcast right now. Last signal was 10d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C317, octal 34341427, decimal 7,455,511.
What flights does 71C317 operate?
Mode-S 71C317 has broadcast 20 distinct callsigns, including JJA1876, JJA1875, JJA2211, JJA2212, JJA1176.