Apparatus

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sensors Mode-S transponder

71C061

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

Currently assigned to HL8061 · BOEING 737-800

Hex
71C061
Octal
34340141
Decimal
7,454,817
Country
KR
Tail
HL8061
Type
B738
No current signal · last broadcast Jul 26, 22:15 UTC
Flights observed
614
Distinct callsigns
20
Country
KR
Last broadcast
Jul 26, 22:15 UTC

Last known position

Most recent position reported by Mode-S 71C061.

Country allocation

The ICAO 24-bit address 71C061 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
JJA130 Jeju Air 12 2026-07-25
JJA119 Jeju Air 12 2026-07-25
JJA702 Jeju Air 11 2026-07-25
JJA141 - 11 2026-07-05
JJA139 - 11 2026-07-12
JJA138 Jeju Air 11 2026-07-26
JJA129 - 11 2026-07-12
JJA128 - 11 2026-07-12
JJA109 Jeju Air 11 2026-07-21
JJA228 Jeju Air 10 2026-07-26
JJA227 Jeju Air 10 2026-07-26
JJA142 - 10 2026-06-27
JJA110 Jeju Air 10 2026-07-25
JJA102 Jeju Air 10 2026-07-05
JJA137 Jeju Air 9 2026-07-20
JJA132 - 9 2026-07-05
JJA123 - 9 2026-07-13
JJA120 - 9 2026-07-12
JJA115 - 9 2026-07-12
JJA111 - 9 2026-07-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JJA151 GMP → CJU Jul 26, 21:40 UTCJul 26, 22:15 UTC35m
2026-07-26 JJA138 CJU → GMP Jul 26, 12:55 UTCJul 26, 13:30 UTC35m
2026-07-26 JJA227 CJJ → CJU Jul 26, 11:00 UTCJul 26, 11:25 UTC25m
2026-07-26 JJA228 CJU → CJJ Jul 26, 09:25 UTCJul 26, 09:55 UTC30m
2026-07-26 JJA509 PUS → CJU Jul 26, 07:20 UTCJul 26, 07:35 UTC15m
2026-07-26 JJA508 CJU → PUS Jul 26, 05:45 UTCJul 26, 06:05 UTC20m
2026-07-26 JJA505 PUS → CJU Jul 26, 03:55 UTCJul 26, 04:15 UTC20m
2026-07-26 JJA504 CJU → PUS Jul 26, 02:20 UTCJul 26, 02:35 UTC15m
2026-07-26 JJA185 GMP → CJU Jul 26, 00:15 UTCJul 26, 00:55 UTC40m
2026-07-25 JJA904 PUS → GMP Jul 25, 22:20 UTCJul 25, 23:00 UTC40m
2026-07-25 JJA907 GMP → PUS Jul 25, 11:15 UTCJul 25, 12:05 UTC50m
2026-07-25 JJA130 CJU → GMP Jul 25, 09:20 UTCJul 25, 10:05 UTC45m
2026-07-25 JJA705 TAE → CJU Jul 25, 07:20 UTCJul 25, 07:35 UTC15m
2026-07-25 JJA702 CJU → TAE Jul 25, 05:50 UTCJul 25, 06:10 UTC20m
2026-07-25 JJA119 GMP → CJU Jul 25, 03:55 UTCJul 25, 04:30 UTC35m
2026-07-25 JJA110 CJU → GMP Jul 25, 02:00 UTCJul 25, 02:45 UTC45m
2026-07-25 JJA503 PUS → CJU Jul 25, 00:05 UTCJul 25, 00:20 UTC15m
2026-07-24 JJA907 GMP → PUS Jul 24, 11:15 UTCJul 24, 11:55 UTC40m
2026-07-24 JJA130 CJU → GMP Jul 24, 09:20 UTCJul 24, 10:05 UTC45m
2026-07-24 JJA705 TAE → CJU Jul 24, 07:25 UTCJul 24, 07:35 UTC10m
2026-07-24 JJA702 CJU → TAE Jul 24, 05:55 UTCJul 24, 06:15 UTC20m
2026-07-24 JJA119 GMP → CJU Jul 24, 03:40 UTCJul 24, 04:15 UTC35m
2026-07-24 JJA110 CJU → GMP Jul 24, 02:05 UTCJul 24, 02:45 UTC40m
2026-07-24 JJA503 PUS → CJU Jul 24, 00:10 UTCJul 24, 00:25 UTC15m
2026-07-23 JJA1552 CTS → PUS Jul 23, 05:40 UTCJul 23, 07:50 UTC2h 10m
2026-07-23 JJA1551 PUS → CTS Jul 23, 02:10 UTCJul 23, 04:10 UTC2h 0m
2026-07-23 JJA1452 FUK → PUS Jul 23, 00:05 UTCJul 23, 00:40 UTC35m
2026-07-22 JJA1451 PUS → FUK Jul 22, 22:05 UTCJul 22, 22:20 UTC15m
2026-07-22 JJA514 CJU → PUS Jul 22, 11:20 UTCJul 22, 11:45 UTC25m
2026-07-22 JJA506 CJU → PUS Jul 22, 04:35 UTCJul 22, 04:55 UTC20m
2026-07-22 JJA213 CJJ → CJU Jul 22, 02:20 UTCJul 22, 02:55 UTC35m
2026-07-22 JJA214 CJU → CJJ Jul 22, 00:50 UTCJul 22, 01:25 UTC35m
2026-07-21 JJA107 - Jul 21, 22:50 UTCJul 21, 23:25 UTC35m
2026-07-21 JJA138 CJU → GMP Jul 21, 12:30 UTCJul 21, 13:10 UTC40m
2026-07-21 JJA227 CJJ → CJU Jul 21, 10:25 UTCJul 21, 10:50 UTC25m
2026-07-21 JJA228 CJU → CJJ Jul 21, 08:55 UTCJul 21, 09:20 UTC25m
2026-07-21 JJA509 PUS → CJU Jul 21, 07:00 UTCJul 21, 07:15 UTC15m
2026-07-21 JJA508 CJU → PUS Jul 21, 05:40 UTCJul 21, 06:05 UTC25m
2026-07-21 JJA505 PUS → CJU Jul 21, 03:50 UTCJul 21, 04:00 UTC10m
2026-07-21 JJA504 CJU → PUS Jul 21, 02:25 UTCJul 21, 02:50 UTC25m
2026-07-21 JJA109 GMP → CJU Jul 21, 00:10 UTCJul 21, 00:50 UTC40m
2026-07-20 JJA092F ICN → GMP Jul 20, 22:40 UTCJul 20, 22:50 UTC10m
2026-07-20 JJA140 CJU → GMP Jul 20, 13:35 UTCJul 20, 14:15 UTC40m
2026-07-20 JJA137 GMP → CJU Jul 20, 11:30 UTCJul 20, 12:20 UTC50m
2026-07-20 JJA130 CJU → GMP Jul 20, 09:50 UTCJul 20, 10:35 UTC45m
2026-07-20 JJA705 - Jul 20, 08:00 UTCJul 20, 08:10 UTC10m
2026-07-20 JJA702 - Jul 20, 06:30 UTCJul 20, 07:00 UTC30m
2026-07-20 JJA119 GMP → CJU Jul 20, 04:15 UTCJul 20, 04:55 UTC40m
2026-07-20 JJA110 CJU → GMP Jul 20, 02:30 UTCJul 20, 03:05 UTC35m
2026-07-20 JJA503 PUS → CJU Jul 20, 00:30 UTCJul 20, 00:45 UTC15m

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 HL8061 page for operator, model, and routing details .

Mode-S 71C061 frequently asked

What is Mode-S code 71C061?
71C061 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8061.
Where is Mode-S 71C061 registered?
Mode-S code 71C061 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 71C061 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C061, octal 34340141, decimal 7,454,817.
What flights does 71C061 operate?
Mode-S 71C061 has broadcast 20 distinct callsigns, including JJA130, JJA119, JJA702, JJA141, JJA139.