Apparatus

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sensors Mode-S transponder

71C285

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

Currently assigned to HL8285 · BOEING 777-200LR

Hex
71C285
Octal
34341205
Decimal
7,455,365
Country
KR
Tail
HL8285
Type
B77L
Broadcasting now · callsign KAL224 · 33,925 ft
Flights observed
246
Distinct callsigns
20
Country
KR
Last broadcast
Jul 26, 21:05 UTC

Current position

71C285 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 71C285 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
KAL504 Korean Air 17 2026-07-26
KAL313 - 15 2026-07-24
KAL314 Korean Air 13 2026-07-24
KAL503 Korean Air 12 2026-07-25
KAL541 Korean Air 11 2026-07-21
KAL542 Korean Air 8 2026-07-21
KAL274 - 8 2026-06-29
KAL231 Korean Air 8 2026-06-08
KAL9575 - 7 2026-07-01
KAL389 - 7 2026-07-09
KAL282 - 7 2026-07-14
KAL8258 - 6 2026-07-09
KAL285 Korean Air 6 2026-07-18
KAL273 Korean Air 6 2026-06-28
KAL251 - 6 2026-06-16
KAL249 - 6 2026-07-06
KAL349 - 5 2026-06-13
KAL232 Korean Air 5 2026-06-09
KAL9576 - 4 2026-07-02
KAL9313 Korean Air 4 2026-04-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 KAL504 LHR → ICN Jul 26, 17:00 UTCJul 26, 21:05 UTC4h 5m
2026-07-26 KAL504 LHR → ICN Jul 26, 14:15 UTCJul 26, 14:55 UTC40m
2026-07-25 KAL503 ICN → LHR Jul 25, 04:55 UTCJul 25, 17:10 UTC12h 15m
2026-07-25 KAL503 ICN → LHR Jul 25, 03:55 UTCJul 25, 04:15 UTC20m
2026-07-24 KAL314 HKG → HKG Jul 24, 19:30 UTCJul 24, 22:25 UTC2h 55m
2026-07-24 KAL313 - Jul 24, 14:00 UTCJul 24, 17:10 UTC3h 10m
2026-07-24 KAL314 HKG → HKG Jul 24, 05:20 UTCJul 24, 08:30 UTC3h 10m
2026-07-23 KAL313D ICN → HKG Jul 23, 23:50 UTCJul 24, 02:40 UTC2h 50m
2026-07-23 KAL316 ICN → ICN Jul 23, 14:35 UTCJul 23, 21:20 UTC6h 45m
2026-07-23 KAL530 FRA → ICN Jul 23, 03:35 UTCJul 23, 03:55 UTC20m
2026-07-22 KAL530 FRA → ICN Jul 22, 17:10 UTCJul 23, 02:40 UTC9h 30m
2026-07-22 KAL529 ICN → FRA Jul 22, 02:50 UTCJul 22, 14:20 UTC11h 30m
2026-07-22 KAL529 ICN → FRA Jul 22, 01:40 UTCJul 22, 02:00 UTC20m
2026-07-21 KAL542 OSL → ICN Jul 21, 22:30 UTCJul 21, 22:50 UTC20m
2026-07-21 KAL542 OSL → ICN Jul 21, 11:35 UTCJul 21, 21:35 UTC10h 0m
2026-07-21 KAL541 ICN → VIE Jul 21, 07:25 UTCJul 21, 09:35 UTC2h 10m
2026-07-20 KAL541 ICN → VIE Jul 20, 17:10 UTCJul 21, 05:15 UTC12h 4m
2026-07-20 KAL9232 ORD → ICN Jul 20, 00:00 UTCJul 20, 13:50 UTC13h 50m
2026-07-19 KAL9231 ANC → ORD Jul 19, 15:45 UTCJul 19, 21:00 UTC5h 15m
2026-07-19 KAL9231 ANC → ORD Jul 19, 07:15 UTCJul 19, 14:45 UTC7h 30m
2026-07-18 KAL286 YYZ → ICN Jul 18, 12:50 UTCJul 19, 02:40 UTC13h 50m
2026-07-18 KAL285 ICN → ANC Jul 18, 08:45 UTCJul 18, 10:30 UTC1h 45m
2026-07-18 KAL285 ICN → ANC Jul 18, 00:19 UTCJul 18, 06:35 UTC6h 16m
2026-07-17 KAL285 ICN → ANC Jul 17, 15:25 UTCJul 17, 23:05 UTC7h 40m
2026-07-17 KAL504 LHR → ICN Jul 17, 10:55 UTCJul 17, 11:20 UTC25m
2026-07-17 KAL504 LHR → ICN Jul 17, 00:10 UTCJul 17, 10:15 UTC10h 5m
2026-07-16 KAL504 LHR → ICN Jul 16, 20:39 UTCJul 16, 21:19 UTC40m
2026-07-16 KAL503 - Jul 16, 04:50 UTCJul 16, 17:25 UTC12h 35m
2026-07-16 KAL503 - Jul 16, 03:35 UTCJul 16, 04:05 UTC30m
2026-07-15 KAL542 - Jul 15, 11:15 UTCJul 15, 22:30 UTC11h 15m
2026-07-15 KAL541 VIE → OSL Jul 15, 07:25 UTCJul 15, 09:20 UTC1h 55m
2026-07-14 KAL541 ICN → VIE Jul 14, 17:15 UTCJul 15, 05:05 UTC11h 49m
2026-07-14 KAL282 - Jul 14, 04:30 UTCJul 14, 13:05 UTC8h 35m
2026-07-13 KAL282 - Jul 13, 19:45 UTCJul 14, 03:00 UTC7h 15m
2026-07-13 KAL282 - Jul 13, 15:55 UTCJul 13, 17:30 UTC1h 35m
2026-07-13 KAL281 - Jul 13, 01:15 UTCJul 13, 14:10 UTC12h 55m
2026-07-12 KAL314 - Jul 12, 18:50 UTCJul 12, 21:50 UTC3h 0m
2026-07-12 KAL313 - Jul 12, 13:35 UTCJul 12, 16:30 UTC2h 55m
2026-07-12 KAL504 - Jul 12, 10:30 UTCJul 12, 10:50 UTC20m
2026-07-11 KAL504 - Jul 11, 23:40 UTCJul 12, 09:45 UTC10h 5m
2026-07-11 KAL504 - Jul 11, 20:35 UTCJul 11, 21:15 UTC40m
2026-07-11 KAL503 - Jul 11, 04:35 UTCJul 11, 16:50 UTC12h 15m
2026-07-11 KAL503 - Jul 11, 03:30 UTCJul 11, 03:45 UTC15m
2026-07-10 KAL314 HKG → ICN Jul 10, 20:10 UTCJul 10, 23:05 UTC2h 55m
2026-07-10 KAL313 - Jul 10, 14:40 UTCJul 10, 17:35 UTC2h 55m
2026-07-10 KAL390 - Jul 10, 00:40 UTCJul 10, 09:40 UTC9h 0m
2026-07-09 KAL389 - Jul 9, 16:25 UTCJul 9, 22:10 UTC5h 45m
2026-07-09 KAL8258 - Jul 9, 03:45 UTCJul 9, 11:45 UTC8h 0m
2026-07-08 KAL8258 - Jul 8, 19:35 UTCJul 9, 02:15 UTC6h 40m
2026-07-08 KAL8258 - Jul 8, 16:40 UTCJul 8, 17:55 UTC1h 15m

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 HL8285 page for operator, model, and routing details .

Mode-S 71C285 frequently asked

What is Mode-S code 71C285?
71C285 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8285.
Where is Mode-S 71C285 registered?
Mode-S code 71C285 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 71C285 broadcasting right now?
Yes. Mode-S 71C285 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C285, octal 34341205, decimal 7,455,365.
What flights does 71C285 operate?
Mode-S 71C285 has broadcast 20 distinct callsigns, including KAL504, KAL313, KAL314, KAL503, KAL541.