Apparatus

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sensors Mode-S transponder

71C050

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

Currently assigned to HL8050 · BOEING 737-800

Hex
71C050
Octal
34340120
Decimal
7,454,800
Country
KR
Tail
HL8050
Type
B738
Broadcasting now · callsign JJA510 · 19,400 ft
Flights observed
562
Distinct callsigns
20
Country
KR
Last broadcast
Jul 26, 22:00 UTC

Current position

71C050 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 71C050 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
JJA6152 Jeju Air 18 2026-07-25
JJA6154 Jeju Air 12 2026-07-25
JJA6153 Jeju Air 12 2026-07-25
JJA6151 Jeju Air 11 2026-07-25
JJA1354 Jeju Air 9 2026-07-25
JJA1353 Jeju Air 9 2026-07-25
JJA1352 - 9 2026-07-16
JJA6256 - 8 2026-07-15
JJA2552 Jeju Air 8 2026-07-24
JJA2551 Jeju Air 8 2026-07-24
JJA1351 - 7 2026-07-15
JJA1328 Jeju Air 7 2026-07-23
JJA1327 Jeju Air 7 2026-07-23
JJA1326 Jeju Air 7 2026-07-23
JJA1325 Jeju Air 7 2026-07-22
JJA129 Jeju Air 7 2026-07-26
JJA128 Jeju Air 7 2026-07-26
JJA123 - 7 2026-06-28
JJA120 Jeju Air 7 2026-07-26
JJA115 Jeju Air 7 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JJA103 GMP → CJU Jul 26, 21:45 UTCJul 26, 22:00 UTC15m
2026-07-26 JJA142 CJU → GMP Jul 26, 13:10 UTCJul 26, 13:40 UTC30m
2026-07-26 JJA139 GMP → CJU Jul 26, 11:00 UTCJul 26, 11:40 UTC40m
2026-07-26 JJA128 CJU → GMP Jul 26, 09:30 UTCJul 26, 10:05 UTC35m
2026-07-26 JJA129 GMP → CJU Jul 26, 07:15 UTCJul 26, 07:50 UTC35m
2026-07-26 JJA120 CJU → GMP Jul 26, 05:20 UTCJul 26, 06:05 UTC45m
2026-07-26 JJA115 GMP → CJU Jul 26, 03:15 UTCJul 26, 03:50 UTC35m
2026-07-26 JJA106 CJU → GMP Jul 26, 01:30 UTCJul 26, 02:10 UTC40m
2026-07-25 JJA501 PUS → CJU Jul 25, 23:30 UTCJul 25, 23:50 UTC20m
2026-07-25 JJA6154 TPE → PUS Jul 25, 18:50 UTCJul 25, 21:15 UTC2h 25m
2026-07-25 JJA6153 PUS → TPE Jul 25, 14:35 UTCJul 25, 14:55 UTC20m
2026-07-25 JJA6153 PUS → TPE Jul 25, 13:10 UTCJul 25, 13:30 UTC20m
2026-07-25 JJA1354 KIX → PUS Jul 25, 10:10 UTCJul 25, 11:10 UTC1h 0m
2026-07-25 JJA1353 PUS → KIX Jul 25, 07:30 UTCJul 25, 08:40 UTC1h 10m
2026-07-25 JJA6152 TPE → PUS Jul 25, 06:00 UTCJul 25, 06:20 UTC20m
2026-07-25 JJA6152 TPE → PUS Jul 25, 04:30 UTCJul 25, 04:50 UTC20m
2026-07-25 JJA6151 PUS → TPE Jul 25, 01:55 UTCJul 25, 02:20 UTC25m
2026-07-25 JJA6151 PUS → TPE Jul 25, 00:30 UTCJul 25, 00:55 UTC25m
2026-07-24 JJA2552 BKK → PUS Jul 24, 18:10 UTCJul 24, 23:05 UTC4h 55m
2026-07-24 JJA2551 PUS → BKK Jul 24, 11:35 UTCJul 24, 16:40 UTC5h 5m
2026-07-24 JJA1552 CTS → PUS Jul 24, 05:40 UTCJul 24, 07:50 UTC2h 10m
2026-07-24 JJA1551 PUS → CTS Jul 24, 02:10 UTCJul 24, 04:15 UTC2h 5m
2026-07-24 JJA1452 FUK → PUS Jul 24, 00:00 UTCJul 24, 00:30 UTC30m
2026-07-23 JJA1451 PUS → FUK Jul 23, 22:00 UTCJul 23, 22:20 UTC20m
2026-07-23 JJA907 GMP → PUS Jul 23, 11:15 UTCJul 23, 11:55 UTC40m
2026-07-23 JJA1328 KIX → GMP Jul 23, 07:50 UTCJul 23, 09:15 UTC1h 25m
2026-07-23 JJA1327 GMP → KIX Jul 23, 05:05 UTCJul 23, 06:25 UTC1h 20m
2026-07-23 JJA1326 KIX → GMP Jul 23, 02:05 UTCJul 23, 03:25 UTC1h 20m
2026-07-22 JJA1325 GMP → KIX Jul 22, 23:15 UTCJul 23, 00:40 UTC1h 25m
2026-07-22 JJA186 CJU → GMP Jul 22, 11:10 UTCJul 22, 11:20 UTC10m
2026-07-22 JJA8135 CJU → PKX Jul 22, 03:10 UTCJul 22, 03:55 UTC45m
2026-07-22 JJA185 GMP → CJU Jul 22, 00:00 UTCJul 22, 00:35 UTC35m
2026-07-21 JJA158 CJU → GMP Jul 21, 11:35 UTCJul 21, 12:20 UTC45m
2026-07-21 JJA157 GMP → CJU Jul 21, 09:25 UTCJul 21, 10:00 UTC35m
2026-07-21 JJA156 CJU → GMP Jul 21, 07:50 UTCJul 21, 08:30 UTC40m
2026-07-21 JJA155 GMP → CJU Jul 21, 05:20 UTCJul 21, 05:55 UTC35m
2026-07-21 JJA116 CJU → GMP Jul 21, 03:20 UTCJul 21, 04:00 UTC40m
2026-07-21 JJA211 PUS → GMP Jul 21, 01:10 UTCJul 21, 01:40 UTC30m
2026-07-20 JJA212 CJU → CJJ Jul 20, 23:35 UTCJul 21, 00:10 UTC35m
2026-07-20 JJA101 - Jul 20, 21:30 UTCJul 20, 22:05 UTC35m
2026-07-20 JJA134 - Jul 20, 12:45 UTCJul 20, 13:25 UTC40m
2026-07-20 JJA135 GMP → CJU Jul 20, 10:40 UTCJul 20, 11:10 UTC30m
2026-07-20 JJA1328 KIX → GMP Jul 20, 07:55 UTCJul 20, 09:15 UTC1h 20m
2026-07-20 JJA1327 GMP → KIX Jul 20, 05:05 UTCJul 20, 06:30 UTC1h 25m
2026-07-20 JJA1326 KIX → GMP Jul 20, 02:35 UTCJul 20, 03:50 UTC1h 15m
2026-07-19 JJA1325 GMP → KIX Jul 19, 23:35 UTCJul 20, 01:00 UTC1h 25m
2026-07-19 JJA140 CJU → GMP Jul 19, 12:45 UTCJul 19, 13:20 UTC35m
2026-07-19 JJA137 GMP → CJU Jul 19, 10:35 UTCJul 19, 11:10 UTC35m
2026-07-19 JJA1328 KIX → GMP Jul 19, 08:00 UTCJul 19, 09:15 UTC1h 15m
2026-07-19 JJA1327 GMP → KIX Jul 19, 05:15 UTCJul 19, 06:40 UTC1h 25m

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 HL8050 page for operator, model, and routing details .

Mode-S 71C050 frequently asked

What is Mode-S code 71C050?
71C050 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8050.
Where is Mode-S 71C050 registered?
Mode-S code 71C050 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 71C050 broadcasting right now?
Yes. Mode-S 71C050 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C050, octal 34340120, decimal 7,454,800.
What flights does 71C050 operate?
Mode-S 71C050 has broadcast 20 distinct callsigns, including JJA6152, JJA6154, JJA6153, JJA6151, JJA1354.