Apparatus

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sensors Mode-S transponder

71C333

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

Currently assigned to HL8333 · BOEING 737-800

Hex
71C333
Octal
34341463
Decimal
7,455,539
Country
KR
Tail
HL8333
Type
B738
No current signal · last broadcast Jul 26, 22:20 UTC
Flights observed
498
Distinct callsigns
20
Country
KR
Last broadcast
Jul 26, 22:20 UTC

Last known position

Most recent position reported by Mode-S 71C333.

Country allocation

The ICAO 24-bit address 71C333 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
JJA5203 Jeju Air 11 2026-07-26
JJA1401 Jeju Air 8 2026-07-26
JJA5204 Jeju Air 7 2026-07-26
JJA228 Jeju Air 7 2026-05-29
JJA227 Jeju Air 7 2026-05-29
JJA1702 - 7 2026-07-09
JJA1701 - 7 2026-07-08
JJA141 Jeju Air 7 2026-05-12
JJA1402 Jeju Air 7 2026-07-21
JJA132 Jeju Air 7 2026-05-12
JJA112 Jeju Air 7 2026-04-17
JJA2603 - 6 2026-07-19
JJA1704 - 6 2026-07-10
JJA1703 - 6 2026-07-10
JJA138 Jeju Air 6 2026-05-29
JJA1304 - 6 2026-07-08
JJA1303 - 6 2026-07-08
JJA124 Jeju Air 6 2026-04-17
JJA111 Jeju Air 6 2026-05-13
JJA102 Jeju Air 6 2026-05-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JJA1401 ICN → FUK Jul 26, 21:40 UTCJul 26, 22:20 UTC40m
2026-07-26 JJA5204 UBN → ICN Jul 26, 08:25 UTCJul 26, 08:45 UTC20m
2026-07-26 JJA5203 ICN → UBN Jul 26, 01:25 UTCJul 26, 02:55 UTC1h 30m
2026-07-25 JJA2126 - Jul 25, 12:50 UTCJul 25, 22:45 UTC9h 55m
2026-07-25 JJA8971 ICN → YNJ Jul 25, 05:25 UTCJul 25, 10:25 UTC5h 0m
2026-07-25 JJA1612 HIJ → ICN Jul 25, 01:30 UTCJul 25, 02:40 UTC1h 10m
2026-07-24 JJA1611 ICN → HIJ Jul 24, 23:05 UTCJul 25, 00:10 UTC1h 5m
2026-07-24 JJA2108 HKG → ICN Jul 24, 17:45 UTCJul 24, 21:30 UTC3h 45m
2026-07-24 JJA2107 ICN → CRK Jul 24, 15:55 UTCJul 24, 16:25 UTC30m
2026-07-24 JJA2107 ICN → CRK Jul 24, 13:00 UTCJul 24, 14:35 UTC1h 35m
2026-07-24 JJA1204 NGO → ICN Jul 24, 09:20 UTCJul 24, 10:40 UTC1h 20m
2026-07-24 JJA1203 ICN → NGO Jul 24, 06:30 UTCJul 24, 07:50 UTC1h 20m
2026-07-24 JJA1102 ICN → NRT Jul 24, 03:00 UTCJul 24, 05:00 UTC2h 0m
2026-07-23 JJA1101 NRT → ICN Jul 23, 23:30 UTCJul 24, 01:30 UTC2h 0m
2026-07-23 JJA2104 MNL → ICN Jul 23, 16:20 UTCJul 23, 19:50 UTC3h 30m
2026-07-23 JJA2103 ICN → MNL Jul 23, 10:55 UTCJul 23, 14:50 UTC3h 55m
2026-07-23 JJA5204 - Jul 23, 08:05 UTCJul 23, 08:25 UTC20m
2026-07-23 JJA5203 ICN → UBN Jul 23, 01:25 UTCJul 23, 02:55 UTC1h 30m
2026-07-22 JJA2202 HAN → ICN Jul 22, 19:00 UTCJul 22, 22:15 UTC3h 15m
2026-07-22 JJA2202 HAN → ICN Jul 22, 18:05 UTCJul 22, 18:20 UTC15m
2026-07-22 JJA2201 ICN → BKK Jul 22, 16:10 UTCJul 22, 16:20 UTC10m
2026-07-22 JJA2201 ICN → BKK Jul 22, 12:25 UTCJul 22, 13:00 UTC35m
2026-07-22 JJA6001 ICN → MFM Jul 22, 01:15 UTCJul 22, 04:30 UTC3h 15m
2026-07-21 JJA1504 CTS → ICN Jul 21, 07:20 UTCJul 21, 09:50 UTC2h 30m
2026-07-21 JJA1503 ICN → CTS Jul 21, 03:40 UTCJul 21, 06:00 UTC2h 20m
2026-07-21 JJA1402 FUK → ICN Jul 21, 00:15 UTCJul 21, 01:15 UTC1h 0m
2026-07-20 JJA1401 ICN → FUK Jul 20, 21:50 UTCJul 20, 22:30 UTC40m
2026-07-20 JJA1408 FUK → ICN Jul 20, 11:15 UTCJul 20, 12:10 UTC55m
2026-07-20 JJA1407 ICN → FUK Jul 20, 08:40 UTCJul 20, 09:35 UTC55m
2026-07-20 JJA1772 - Jul 20, 02:30 UTCJul 20, 03:30 UTC1h 0m
2026-07-19 JJA1771 - Jul 19, 23:55 UTCJul 20, 01:00 UTC1h 5m
2026-07-19 JJA2604 BKI → ICN Jul 19, 16:40 UTCJul 19, 21:30 UTC4h 50m
2026-07-19 JJA2603 - Jul 19, 10:25 UTCJul 19, 15:15 UTC4h 50m
2026-07-19 JJA5204 - Jul 19, 08:00 UTCJul 19, 08:30 UTC30m
2026-07-19 JJA5203 - Jul 19, 01:25 UTCJul 19, 03:00 UTC1h 35m
2026-07-18 JJA2217 ICN → ICN Jul 18, 13:05 UTCJul 18, 23:45 UTC10h 40m
2026-07-18 JJA8972 YNJ → ICN Jul 18, 10:15 UTCJul 18, 10:35 UTC20m
2026-07-18 JJA8971 ICN → YNJ Jul 18, 05:30 UTCJul 18, 06:05 UTC35m
2026-07-18 JJA1772 - Jul 18, 02:14 UTCJul 18, 03:20 UTC1h 6m
2026-07-17 JJA1771 - Jul 17, 23:55 UTCJul 18, 01:00 UTC1h 5m
2026-07-17 JJA1408 - Jul 17, 11:04 UTCJul 17, 12:00 UTC55m
2026-07-17 JJA1407 - Jul 17, 08:35 UTCJul 17, 09:20 UTC45m
2026-07-17 JJA1616 HIJ → ICN Jul 17, 05:45 UTCJul 17, 06:50 UTC1h 5m
2026-07-17 JJA1615 ICN → HIJ Jul 17, 03:10 UTCJul 17, 04:20 UTC1h 10m
2026-07-17 JJA1402 FUK → ICN Jul 17, 00:14 UTCJul 17, 01:09 UTC55m
2026-07-16 JJA1401 ICN → FUK Jul 16, 21:45 UTCJul 16, 22:30 UTC45m
2026-07-16 JJA2104 MNL → ICN Jul 16, 15:55 UTCJul 16, 19:20 UTC3h 25m
2026-07-16 JJA2103 - Jul 16, 10:40 UTCJul 16, 14:20 UTC3h 40m
2026-07-16 JJA5204 - Jul 16, 08:25 UTCJul 16, 08:50 UTC25m
2026-07-16 JJA5203 - Jul 16, 02:55 UTCJul 16, 03:15 UTC20m

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 HL8333 page for operator, model, and routing details .

Mode-S 71C333 frequently asked

What is Mode-S code 71C333?
71C333 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8333.
Where is Mode-S 71C333 registered?
Mode-S code 71C333 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 71C333 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C333, octal 34341463, decimal 7,455,539.
What flights does 71C333 operate?
Mode-S 71C333 has broadcast 20 distinct callsigns, including JJA5203, JJA1401, JJA5204, JJA228, JJA227.