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sensors Mode-S transponder

71C087

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

Currently assigned to HL8087 · BOEING 737-800

Hex
71C087
Octal
34340207
Decimal
7,454,855
Country
KR
Tail
HL8087
Type
B738
No current signal · last broadcast 15h ago
Flights observed
358
Distinct callsigns
20
Country
KR
Last broadcast
15h ago

Last known position

Most recent position reported by Mode-S 71C087.

Country allocation

The ICAO 24-bit address 71C087 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
JJA1611 - 13 2026-07-06
JJA1612 - 12 2026-07-07
JJA1601 - 12 2026-07-11
JJA1503 - 12 2026-07-14
JJA1172 - 12 2026-07-10
JJA2603 - 11 2026-07-12
JJA1602 - 11 2026-07-12
JJA1171 - 11 2026-07-10
JJA1396 - 10 2026-07-03
JJA1395 - 10 2026-07-02
JJA2604 - 9 2026-07-12
JJA1504 - 9 2026-07-14
JJA2126 - 8 2026-07-01
JJA1704 - 8 2026-07-12
JJA1703 - 8 2026-07-12
JJA2104 Jeju Air 7 2026-06-15
JJA1402 - 7 2026-06-25
JJA2103 - 6 2026-06-15
JJA1702 - 6 2026-07-14
JJA1701 - 6 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 JJA1504 - Jul 14, 07:20 UTCJul 14, 09:40 UTC2h 20m
2026-07-14 JJA1503 - Jul 14, 03:35 UTCJul 14, 06:00 UTC2h 25m
2026-07-14 JJA1702 - Jul 14, 00:45 UTCJul 14, 02:00 UTC1h 15m
2026-07-13 JJA1701 - Jul 13, 22:30 UTCJul 13, 23:35 UTC1h 5m
2026-07-13 JJA6002 - Jul 13, 06:10 UTCJul 13, 09:30 UTC3h 20m
2026-07-13 JJA6001 - Jul 13, 01:10 UTCJul 13, 04:05 UTC2h 55m
2026-07-12 JJA2604 BKI → ICN Jul 12, 16:40 UTCJul 12, 21:45 UTC5h 5m
2026-07-12 JJA2603 ICN → BKI Jul 12, 10:25 UTCJul 12, 15:05 UTC4h 40m
2026-07-12 JJA1704 - Jul 12, 06:55 UTCJul 12, 08:01 UTC1h 5m
2026-07-12 JJA1703 - Jul 12, 04:30 UTCJul 12, 05:30 UTC1h 0m
2026-07-12 JJA1602 - Jul 12, 01:25 UTCJul 12, 03:01 UTC1h 35m
2026-07-11 JJA1601 - Jul 11, 22:20 UTCJul 11, 23:50 UTC1h 30m
2026-07-11 JJA1604 - Jul 11, 09:20 UTCJul 11, 11:00 UTC1h 40m
2026-07-11 JJA1603 - Jul 11, 06:10 UTCJul 11, 07:40 UTC1h 30m
2026-07-11 JJA1602 - Jul 11, 01:10 UTCJul 11, 02:50 UTC1h 40m
2026-07-10 JJA1601 - Jul 10, 22:15 UTCJul 10, 23:55 UTC1h 40m
2026-07-10 JJA1172 NRT → ICN Jul 10, 08:45 UTCJul 10, 10:40 UTC1h 55m
2026-07-10 JJA1171 ICN → NRT Jul 10, 05:00 UTCJul 10, 07:05 UTC2h 5m
2026-07-10 JJA1602 - Jul 10, 01:20 UTCJul 10, 03:15 UTC1h 55m
2026-07-09 JJA1601 - Jul 9, 22:30 UTCJul 10, 00:10 UTC1h 40m
2026-07-09 JJA1408 - Jul 9, 11:05 UTCJul 9, 12:10 UTC1h 5m
2026-07-09 JJA1407 - Jul 9, 08:35 UTCJul 9, 09:25 UTC50m
2026-07-09 JJA1812 - Jul 9, 04:05 UTCJul 9, 05:20 UTC1h 15m
2026-07-09 JJA1811 - Jul 9, 01:30 UTCJul 9, 02:35 UTC1h 5m
2026-07-08 JJA2202 - Jul 8, 18:05 UTCJul 8, 22:25 UTC4h 20m
2026-07-08 JJA2201 - Jul 8, 15:45 UTCJul 8, 16:15 UTC30m
2026-07-08 JJA2201 - Jul 8, 12:10 UTCJul 8, 12:35 UTC25m
2026-07-08 JJA8902 - Jul 8, 07:40 UTCJul 8, 08:00 UTC20m
2026-07-08 JJA8901 - Jul 8, 01:25 UTCJul 8, 01:45 UTC20m
2026-07-07 JJA1172 NRT → ICN Jul 7, 08:35 UTCJul 7, 10:30 UTC1h 55m
2026-07-07 JJA1171 ICN → NRT Jul 7, 04:55 UTCJul 7, 06:55 UTC2h 0m
2026-07-07 JJA1612 HIJ → ICN Jul 7, 01:40 UTCJul 7, 02:50 UTC1h 10m
2026-07-06 JJA1611 - Jul 6, 23:05 UTCJul 7, 00:10 UTC1h 5m
2026-07-06 JJA1172 NRT → ICN Jul 6, 08:35 UTCJul 6, 10:45 UTC2h 10m
2026-07-06 JJA1171 ICN → NRT Jul 6, 05:05 UTCJul 6, 07:10 UTC2h 5m
2026-07-06 JJA1602 - Jul 6, 01:15 UTCJul 6, 03:15 UTC2h 0m
2026-07-05 JJA1601 ICN → FSZ Jul 5, 22:20 UTCJul 5, 23:50 UTC1h 30m
2026-07-05 JJA1172 NRT → ICN Jul 5, 08:40 UTCJul 5, 10:50 UTC2h 10m
2026-07-05 JJA1171 ICN → NRT Jul 5, 04:55 UTCJul 5, 06:50 UTC1h 55m
2026-07-05 JJA1612 HIJ → ICN Jul 5, 01:45 UTCJul 5, 02:55 UTC1h 10m
2026-07-04 JJA1611 ICN → HIJ Jul 4, 22:55 UTCJul 5, 00:05 UTC1h 10m
2026-07-04 JJA8904 - Jul 4, 12:10 UTCJul 4, 12:30 UTC20m
2026-07-04 JJA8903 - Jul 4, 07:05 UTCJul 4, 07:30 UTC25m
2026-07-04 JJA1102 NRT → ICN Jul 4, 03:05 UTCJul 4, 05:10 UTC2h 5m
2026-07-03 JJA1101 NRT → ICN Jul 3, 23:30 UTCJul 4, 01:20 UTC1h 50m
2026-07-03 JJJA1504 - Jul 3, 07:05 UTCJul 3, 09:40 UTC2h 35m
2026-07-03 JJA1503 - Jul 3, 03:30 UTCJul 3, 05:40 UTC2h 10m
2026-07-03 JJA1396 KIX → ICN Jul 3, 00:05 UTCJul 3, 01:35 UTC1h 30m
2026-07-02 JJA1395 ICN → KIX Jul 2, 10:35 UTCJul 2, 11:55 UTC1h 20m
2026-07-02 JJA6002 - Jul 2, 06:15 UTCJul 2, 09:20 UTC3h 5m

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 HL8087 page for operator, model, and routing details .

Mode-S 71C087 frequently asked

What is Mode-S code 71C087?
71C087 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8087.
Where is Mode-S 71C087 registered?
Mode-S code 71C087 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 71C087 broadcasting right now?
No active broadcast right now. Last signal was 15h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C087, octal 34340207, decimal 7,454,855.
What flights does 71C087 operate?
Mode-S 71C087 has broadcast 20 distinct callsigns, including JJA1611, JJA1612, JJA1601, JJA1503, JJA1172.