Apparatus

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sensors Mode-S transponder

71C011

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

Currently assigned to HL8011 · BOEING 777-300ER

Hex
71C011
Octal
34340021
Decimal
7,454,737
Country
KR
Tail
HL8011
Type
B77W
No current signal · last broadcast Jul 26, 21:40 UTC
Flights observed
184
Distinct callsigns
20
Country
KR
Last broadcast
Jul 26, 21:40 UTC

Last known position

Most recent position reported by Mode-S 71C011.

Country allocation

The ICAO 24-bit address 71C011 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
KAL907 Korean Air 16 2026-07-26
KAL908 Korean Air 15 2026-07-26
KAL902 Korean Air 14 2026-07-01
KAL005 - 14 2026-07-23
KAL006 - 13 2026-07-24
KAL901 - 12 2026-06-30
KAL036 - 10 2026-07-07
KAL646 Korean Air 9 2026-06-29
KAL645 - 9 2026-06-29
KAL086 - 9 2026-07-21
KAL085 - 9 2026-07-20
KAL093 Korean Air 8 2026-07-22
KAL938 Korean Air 6 2026-05-16
KAL094 Korean Air 6 2026-07-22
KAL937 Korean Air 5 2026-05-15
KAL035 - 5 2026-07-07
KAL034 - 3 2026-07-19
KAL033 - 3 2026-07-19
KAL874 - 2 2026-05-22
KAL873 - 2 2026-05-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 KAL908 LHR → ICN Jul 26, 18:50 UTCJul 26, 21:40 UTC2h 50m
2026-07-26 KAL907 ICN → LHR Jul 26, 03:35 UTCJul 26, 15:50 UTC12h 16m
2026-07-26 KAL907 ICN → LHR Jul 26, 02:30 UTCJul 26, 02:50 UTC20m
2026-07-25 KAL888 PVG → ICN Jul 25, 02:25 UTCJul 25, 07:40 UTC5h 15m
2026-07-24 KAL006 - Jul 24, 07:00 UTCJul 24, 18:45 UTC11h 45m
2026-07-23 KAL005 - Jul 23, 12:15 UTCJul 23, 23:25 UTC11h 10m
2026-07-22 KAL094 IAD → ICN Jul 22, 18:15 UTCJul 23, 09:20 UTC15h 5m
2026-07-22 KAL093 ICN → IAD Jul 22, 02:20 UTCJul 22, 14:50 UTC12h 30m
2026-07-21 KAL086 JFK → ICN Jul 21, 05:20 UTCJul 21, 19:35 UTC14h 15m
2026-07-20 KAL085 ICN → JFK Jul 20, 11:25 UTCJul 21, 00:45 UTC13h 20m
2026-07-19 KAL034 ATL → ICN Jul 19, 16:05 UTCJul 20, 06:45 UTC14h 40m
2026-07-19 KAL033 ICN → ATL Jul 19, 00:10 UTCJul 19, 13:30 UTC13h 20m
2026-07-18 KAL006 LAS → ICN Jul 18, 07:05 UTCJul 18, 18:45 UTC11h 40m
2026-07-17 KAL005 ICN → LAS Jul 17, 12:35 UTCJul 17, 23:45 UTC11h 10m
2026-07-16 KAL908 - Jul 16, 18:55 UTCJul 17, 06:20 UTC11h 25m
2026-07-16 KAL907 - Jul 16, 03:50 UTCJul 16, 16:19 UTC12h 30m
2026-07-16 KAL907 - Jul 16, 02:35 UTCJul 16, 02:55 UTC20m
2026-07-15 KAL086 JFK → ICN Jul 15, 05:15 UTCJul 15, 19:45 UTC14h 30m
2026-07-14 KAL085 ICN → JFK Jul 14, 11:30 UTCJul 15, 00:50 UTC13h 19m
2026-07-13 KAL078 YYZ → ICN Jul 13, 17:05 UTCJul 14, 06:55 UTC13h 50m
2026-07-13 KAL077 ICN → YYZ Jul 13, 01:05 UTCJul 13, 13:30 UTC12h 25m
2026-07-12 KAL766 - Jul 12, 06:01 UTCJul 12, 08:20 UTC2h 20m
2026-07-12 KAL765 - Jul 12, 02:01 UTCJul 12, 04:20 UTC2h 20m
2026-07-11 KAL908 - Jul 11, 06:01 UTCJul 11, 06:25 UTC25m
2026-07-10 KAL908 - Jul 10, 19:05 UTCJul 11, 05:15 UTC10h 10m
2026-07-10 KAL907 - Jul 10, 03:40 UTCJul 10, 16:05 UTC12h 25m
2026-07-10 KAL907 - Jul 10, 02:25 UTCJul 10, 02:40 UTC15m
2026-07-09 KAL006 LAS → ICN Jul 9, 07:10 UTCJul 9, 19:20 UTC12h 10m
2026-07-08 KAL005 ICN → LAS Jul 8, 12:30 UTCJul 8, 23:20 UTC10h 50m
2026-07-07 KAL036 ATL → ICN Jul 7, 18:00 UTCJul 8, 08:30 UTC14h 30m
2026-07-07 KAL035 - Jul 7, 02:15 UTCJul 7, 15:30 UTC13h 15m
2026-07-05 KAL094 IAD → ICN Jul 5, 17:55 UTCJul 6, 08:35 UTC14h 40m
2026-07-05 KAL093 ICN → IAD Jul 5, 01:55 UTCJul 5, 14:55 UTC13h 0m
2026-07-03 KAL036 ATL → ICN Jul 3, 19:05 UTCJul 4, 09:10 UTC14h 5m
2026-07-03 KAL035 ICN → ATL Jul 3, 02:10 UTCJul 3, 15:25 UTC13h 15m
2026-07-02 KAL086 JFK → ICN Jul 2, 05:15 UTCJul 2, 19:35 UTC14h 20m
2026-07-01 KAL085 ICN → JFK Jul 1, 11:15 UTCJul 2, 00:45 UTC13h 30m
2026-07-01 KAL902 CDG → ICN Jul 1, 06:35 UTCJul 1, 07:00 UTC25m
2026-06-30 KAL902 CDG → ICN Jun 30, 19:15 UTCJul 1, 05:50 UTC10h 35m
2026-06-30 KAL901 - Jun 30, 04:15 UTCJun 30, 16:15 UTC12h 0m
2026-06-30 KAL901 - Jun 30, 03:05 UTCJun 30, 03:20 UTC15m
2026-06-29 KAL646 SIN → ICN Jun 29, 21:30 UTCJun 30, 00:14 UTC2h 45m
2026-06-29 KAL645 - Jun 29, 15:30 UTCJun 29, 15:49 UTC20m
2026-06-29 KAL645 - Jun 29, 10:20 UTCJun 29, 12:49 UTC2h 30m
2026-06-29 KAL788 - Jun 29, 01:44 UTCJun 29, 02:39 UTC55m
2026-06-28 KAL787 ICN → FUK Jun 28, 23:14 UTCJun 29, 00:00 UTC45m
2026-06-28 KAL086 JFK → ICN Jun 28, 05:04 UTCJun 28, 19:40 UTC14h 35m
2026-06-27 KAL085 ICN → JFK Jun 27, 11:30 UTCJun 28, 00:59 UTC13h 30m
2026-06-27 KAL908 - Jun 27, 06:25 UTCJun 27, 06:54 UTC30m
2026-06-26 KAL908 - Jun 26, 19:09 UTCJun 27, 05:39 UTC10h 30m

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 HL8011 page for operator, model, and routing details .

Mode-S 71C011 frequently asked

What is Mode-S code 71C011?
71C011 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8011.
Where is Mode-S 71C011 registered?
Mode-S code 71C011 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 71C011 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C011, octal 34340021, decimal 7,454,737.
What flights does 71C011 operate?
Mode-S 71C011 has broadcast 20 distinct callsigns, including KAL907, KAL908, KAL902, KAL005, KAL006.