Apparatus

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sensors Mode-S transponder

71C090

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

Currently assigned to HL8090 · BOEING 737-800

Hex
71C090
Octal
34340220
Decimal
7,454,864
Country
KR
Tail
HL8090
Type
B738
No current signal · last broadcast Jul 26, 21:00 UTC
Flights observed
545
Distinct callsigns
20
Country
KR
Last broadcast
Jul 26, 21:00 UTC

Last known position

Most recent position reported by Mode-S 71C090.

Country allocation

The ICAO 24-bit address 71C090 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
JJA6001 - 18 2026-06-18
JJA6002 - 15 2026-06-18
JJA6256 Jeju Air 14 2026-07-19
JJA6255 Jeju Air 9 2026-07-19
JJA6154 Jeju Air 9 2026-07-22
JJA1612 - 9 2026-06-14
JJA1611 - 8 2026-06-13
JJA1604 - 8 2026-06-25
JJA1603 - 8 2026-06-25
JJA1504 Jeju Air 8 2026-06-13
JJA2604 - 7 2026-06-20
JJA2603 - 7 2026-06-20
JJA1602 Jeju Air 7 2026-06-03
JJA1601 Jeju Air 7 2026-06-03
JJA1503 Jeju Air 7 2026-06-13
JJA1402 - 7 2026-06-22
JJA1401 - 7 2026-06-21
JJA1304 - 7 2026-06-25
JJA1303 - 7 2026-06-25
JJA1152 Jeju Air 7 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JJA2552 BKK → PUS Jul 26, 20:35 UTCJul 26, 21:00 UTC25m
2026-07-26 JJA2551 PUS → BKK Jul 26, 11:25 UTCJul 26, 16:20 UTC4h 55m
2026-07-26 JJA1454 FUK → PUS Jul 26, 06:45 UTCJul 26, 07:20 UTC35m
2026-07-26 JJA1453 PUS → FUK Jul 26, 04:10 UTCJul 26, 05:00 UTC50m
2026-07-26 JJA1352 KIX → PUS Jul 26, 01:50 UTCJul 26, 02:50 UTC1h 0m
2026-07-25 JJA1351 PUS → KIX Jul 25, 23:40 UTCJul 26, 00:40 UTC1h 0m
2026-07-25 JJA2158 PUS → PUS Jul 25, 11:55 UTCJul 25, 21:45 UTC9h 50m
2026-07-25 JJA512 CJU → PUS Jul 25, 10:15 UTCJul 25, 10:35 UTC20m
2026-07-25 JJA513 PUS → CJU Jul 25, 08:30 UTCJul 25, 08:45 UTC15m
2026-07-25 JJA510 CJU → PUS Jul 25, 07:05 UTCJul 25, 07:30 UTC25m
2026-07-25 JJA123 GMP → CJU Jul 25, 04:40 UTCJul 25, 05:15 UTC35m
2026-07-25 JJA114 CJU → GMP Jul 25, 02:45 UTCJul 25, 03:30 UTC45m
2026-07-25 JJA301 KWJ → CJU Jul 25, 01:00 UTCJul 25, 01:10 UTC10m
2026-07-24 JJA302 CJU → KWJ Jul 24, 23:45 UTCJul 25, 00:00 UTC15m
2026-07-24 JJA103 GMP → CJU Jul 24, 21:40 UTCJul 24, 22:15 UTC35m
2026-07-24 JJA158 CJU → GMP Jul 24, 11:40 UTCJul 24, 12:25 UTC45m
2026-07-24 JJA167 ICN → CJU Jul 24, 09:40 UTCJul 24, 10:20 UTC40m
2026-07-24 JJA166 CJU → ICN Jul 24, 07:30 UTCJul 24, 08:20 UTC50m
2026-07-24 JJA155 GMP → CJU Jul 24, 05:25 UTCJul 24, 06:00 UTC35m
2026-07-24 JJA116 CJU → GMP Jul 24, 03:35 UTCJul 24, 04:15 UTC40m
2026-07-24 JJA211 PUS → GMP Jul 24, 01:20 UTCJul 24, 01:50 UTC30m
2026-07-23 JJA212 CJU → CJJ Jul 23, 23:40 UTCJul 24, 00:10 UTC30m
2026-07-23 JJA101 GMP → CJU Jul 23, 21:25 UTCJul 23, 22:00 UTC35m
2026-07-23 JJA130 CJU → GMP Jul 23, 09:55 UTCJul 23, 10:35 UTC40m
2026-07-23 JJA705 - Jul 23, 07:35 UTCJul 23, 07:50 UTC15m
2026-07-23 JJA702 - Jul 23, 05:55 UTCJul 23, 06:10 UTC15m
2026-07-23 JJA119 GMP → CJU Jul 23, 03:45 UTCJul 23, 04:20 UTC35m
2026-07-23 JJA110 CJU → GMP Jul 23, 02:00 UTCJul 23, 02:45 UTC45m
2026-07-23 JJA503 PUS → CJU Jul 23, 00:00 UTCJul 23, 00:15 UTC15m
2026-07-22 JJA6154 TPE → PUS Jul 22, 20:30 UTCJul 22, 21:15 UTC45m
2026-07-22 JJA6154 TPE → PUS Jul 22, 19:05 UTCJul 22, 19:20 UTC15m
2026-07-22 JJA6153 PUS → TPE Jul 22, 13:30 UTCJul 22, 15:20 UTC1h 50m
2026-07-22 JJA1354 KIX → PUS Jul 22, 11:20 UTCJul 22, 11:30 UTC10m
2026-07-22 JJA6152 TPE → PUS Jul 22, 04:05 UTCJul 22, 04:25 UTC20m
2026-07-22 JJA6151 PUS → TPE Jul 22, 02:35 UTCJul 22, 02:55 UTC20m
2026-07-22 JJA6151 PUS → TPE Jul 22, 01:00 UTCJul 22, 01:25 UTC25m
2026-07-21 JJA2552 - Jul 21, 23:20 UTCJul 21, 23:45 UTC25m
2026-07-21 JJA2552 - Jul 21, 18:50 UTCJul 21, 22:10 UTC3h 20m
2026-07-21 JJA2551 PUS → BKK Jul 21, 11:15 UTCJul 21, 16:10 UTC4h 55m
2026-07-21 JJA8253 PUS → DYG Jul 21, 02:05 UTCJul 21, 09:00 UTC6h 55m
2026-07-21 JJA1452 FUK → PUS Jul 21, 00:05 UTCJul 21, 00:40 UTC35m
2026-07-20 JJA1451 PUS → FUK Jul 20, 22:10 UTCJul 20, 22:25 UTC15m
2026-07-20 JJA1552 CTS → PUS Jul 20, 05:40 UTCJul 20, 07:55 UTC2h 15m
2026-07-20 JJA1551 PUS → CTS Jul 20, 02:15 UTCJul 20, 04:15 UTC2h 0m
2026-07-20 JJA1452 - Jul 20, 00:05 UTCJul 20, 01:00 UTC55m
2026-07-19 JJA1451 PUS → FUK Jul 19, 22:15 UTCJul 19, 22:35 UTC20m
2026-07-19 JJA6256 KHH → PUS Jul 19, 10:50 UTCJul 19, 11:10 UTC20m
2026-07-19 JJA6256 KHH → PUS Jul 19, 09:00 UTCJul 19, 09:50 UTC50m
2026-07-19 JJA6255 PUS → KHH Jul 19, 06:45 UTCJul 19, 07:40 UTC55m
2026-07-19 JJA6255 PUS → KHH Jul 19, 05:25 UTCJul 19, 05:35 UTC10m

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 HL8090 page for operator, model, and routing details .

Mode-S 71C090 frequently asked

What is Mode-S code 71C090?
71C090 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8090.
Where is Mode-S 71C090 registered?
Mode-S code 71C090 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 71C090 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C090, octal 34340220, decimal 7,454,864.
What flights does 71C090 operate?
Mode-S 71C090 has broadcast 20 distinct callsigns, including JJA6001, JJA6002, JJA6256, JJA6255, JJA6154.