Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

71BD84

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

Currently assigned to HL7584 · AIRBUS A-330-300

Hex
71BD84
Octal
34336604
Decimal
7,454,084
Country
KR
Tail
HL7584
Type
A333
No current signal · last broadcast 40m ago
Flights observed
333
Distinct callsigns
20
Country
KR
Last broadcast
40m ago

Last known position

Most recent position reported by Mode-S 71BD84.

Country allocation

The ICAO 24-bit address 71BD84 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
KAL2118 Korean Air 31 2026-06-04
KAL2117 Korean Air 28 2026-06-04
KAL2057 Korean Air 25 2026-06-04
KAL836 - 15 2026-07-11
KAL1244 Korean Air 13 2026-06-10
KAL1188 Korean Air 13 2026-06-09
KAL1312 Korean Air 12 2026-06-10
KAL1246 Korean Air 12 2026-06-09
KAL1177 Korean Air 12 2026-06-10
KAL1121 Korean Air 12 2026-06-09
KAL1113 Korean Air 12 2026-06-10
KAL1055 Korean Air 12 2026-06-09
KAL2106 Korean Air 11 2026-06-10
KAL2105 Korean Air 11 2026-06-09
KAL442 - 10 2026-07-12
KAL2058 Korean Air 10 2026-06-03
KAL441 - 9 2026-07-11
KAL835 - 8 2026-07-11
KAL2011 - 8 2026-07-03
KAL864 - 7 2026-06-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 KAL887 - Jul 14, 02:45 UTCJul 14, 03:00 UTC15m
2026-07-13 KAL868 - Jul 13, 00:15 UTCJul 13, 08:15 UTC8h 0m
2026-07-12 KAL752 HND → ICN Jul 12, 17:15 UTCJul 12, 19:05 UTC1h 50m
2026-07-12 KAL751 - Jul 12, 11:50 UTCJul 12, 13:50 UTC2h 0m
2026-07-12 KAL442 - Jul 12, 08:55 UTCJul 12, 09:20 UTC25m
2026-07-12 KAL442 - Jul 12, 05:35 UTCJul 12, 05:45 UTC10m
2026-07-11 KAL441 - Jul 11, 23:35 UTCJul 11, 23:55 UTC20m
2026-07-11 KAL836 - Jul 11, 08:25 UTCJul 11, 08:45 UTC20m
2026-07-11 KAL836 - Jul 11, 05:20 UTCJul 11, 05:31 UTC10m
2026-07-11 KAL835 - Jul 11, 00:00 UTCJul 11, 00:25 UTC25m
2026-07-10 KAL624 - Jul 10, 17:20 UTCJul 10, 21:55 UTC4h 36m
2026-07-10 KAL623 ICN → MNL Jul 10, 11:00 UTCJul 10, 15:25 UTC4h 25m
2026-07-10 KAL660 - Jul 10, 03:20 UTCJul 10, 08:30 UTC5h 10m
2026-07-09 KAL659 ICN → BKK Jul 9, 11:55 UTCJul 9, 16:50 UTC4h 55m
2026-07-09 KAL660 - Jul 9, 03:40 UTCJul 9, 08:45 UTC5h 5m
2026-07-08 KAL659 ICN → BKK Jul 8, 11:05 UTCJul 8, 16:25 UTC5h 20m
2026-07-08 KAL868 - Jul 8, 08:30 UTCJul 8, 09:20 UTC50m
2026-07-08 KAL867 - Jul 8, 00:15 UTCJul 8, 00:55 UTC40m
2026-07-07 KAL2028 TPE → ICN Jul 7, 11:15 UTCJul 7, 13:20 UTC2h 5m
2026-07-07 KAL2027 ICN → TPE Jul 7, 07:30 UTCJul 7, 09:35 UTC2h 5m
2026-07-06 KAL892 - Jul 6, 10:50 UTCJul 7, 02:40 UTC15h 50m
2026-07-06 KAL836 - Jul 6, 08:15 UTCJul 6, 09:00 UTC45m
2026-07-06 KAL835 - Jul 6, 00:55 UTCJul 6, 01:40 UTC45m
2026-07-05 KAL836 - Jul 5, 07:30 UTCJul 5, 08:15 UTC45m
2026-07-05 KAL836 - Jul 5, 05:20 UTCJul 5, 05:30 UTC10m
2026-07-05 KAL835 - Jul 5, 00:20 UTCJul 5, 01:15 UTC55m
2026-07-04 KAL442 - Jul 4, 05:50 UTCJul 4, 09:30 UTC3h 40m
2026-07-03 KAL441 ICN → HAN Jul 3, 23:35 UTCJul 4, 03:35 UTC4h 0m
2026-07-03 KAL2012 - Jul 3, 17:05 UTCJul 3, 20:10 UTC3h 5m
2026-07-03 KAL2011 - Jul 3, 13:55 UTCJul 3, 14:05 UTC10m
2026-07-03 KAL2011 - Jul 3, 11:00 UTCJul 3, 13:15 UTC2h 15m
2026-07-03 KAL660 - Jul 3, 08:00 UTCJul 3, 08:25 UTC25m
2026-07-03 KAL660 - Jul 3, 03:10 UTCJul 3, 05:00 UTC1h 50m
2026-07-02 KAL659 - Jul 2, 15:55 UTCJul 2, 16:20 UTC25m
2026-07-02 KAL659 - Jul 2, 11:10 UTCJul 2, 15:15 UTC4h 5m
2026-07-02 KAL836 - Jul 2, 07:10 UTCJul 2, 07:50 UTC40m
2026-07-02 KAL836 - Jul 2, 05:00 UTCJul 2, 05:10 UTC10m
2026-07-01 KAL835 - Jul 1, 23:50 UTCJul 2, 00:35 UTC45m
2026-07-01 KAL442 - Jul 1, 05:50 UTCJul 1, 09:30 UTC3h 40m
2026-06-30 KAL441 ICN → HAN Jun 30, 23:30 UTCJul 1, 03:20 UTC3h 50m
2026-06-30 KAL2028 - Jun 30, 11:15 UTCJun 30, 13:10 UTC1h 55m
2026-06-30 KAL2027 - Jun 30, 07:30 UTCJun 30, 09:40 UTC2h 10m
2026-06-30 KAL832 - Jun 30, 03:45 UTCJun 30, 04:10 UTC25m
2026-06-29 KAL831 - Jun 29, 23:29 UTCJun 29, 23:54 UTC25m
2026-06-29 KAL2012 - Jun 29, 16:59 UTCJun 29, 20:00 UTC3h 0m
2026-06-29 KAL2011 - Jun 29, 14:19 UTCJun 29, 14:34 UTC15m
2026-06-29 KAL2011 - Jun 29, 11:25 UTCJun 29, 13:44 UTC2h 20m
2026-06-29 KAL442 - Jun 29, 05:45 UTCJun 29, 09:29 UTC3h 45m
2026-06-28 KAL441 ICN → HAN Jun 28, 23:25 UTCJun 29, 03:25 UTC4h 0m
2026-06-28 KAL864 - Jun 28, 20:04 UTCJun 28, 20:25 UTC20m

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 HL7584 page for operator, model, and routing details .

Mode-S 71BD84 frequently asked

What is Mode-S code 71BD84?
71BD84 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL7584.
Where is Mode-S 71BD84 registered?
Mode-S code 71BD84 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 71BD84 broadcasting right now?
No active broadcast right now. Last signal was 40m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71BD84, octal 34336604, decimal 7,454,084.
What flights does 71BD84 operate?
Mode-S 71BD84 has broadcast 20 distinct callsigns, including KAL2118, KAL2117, KAL2057, KAL836, KAL1244.