Apparatus

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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
Broadcasting now · callsign KAL2117 · 9,775 ft
Flights observed
170
Distinct callsigns
18
Country
KR
Last broadcast
13h ago

Current position

71BD84 is currently broadcasting. Map zoomed to live position.

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 18 distinct

Callsign Airline Flights Last seen
KAL2118 Korean Air 26 2026-05-24
KAL2117 Korean Air 22 2026-05-24
KAL2057 Korean Air 21 2026-05-24
KAL1244 Korean Air 10 2026-05-29
KAL1188 Korean Air 10 2026-05-28
KAL1312 Korean Air 9 2026-05-29
KAL1246 Korean Air 9 2026-05-28
KAL1177 Korean Air 9 2026-05-29
KAL1121 Korean Air 9 2026-05-28
KAL1113 Korean Air 9 2026-05-29
KAL1055 Korean Air 9 2026-05-28
KAL2105 Korean Air 8 2026-05-28
KAL2106 Korean Air 7 2026-05-29
KAL2058 Korean Air 6 2026-05-24
KAL458 Korean Air 2 2026-04-13
KAL457 - 2 2026-04-13
KAL428 Korean Air 1 2026-04-12
KAL194P - 1 2026-04-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 KAL1312 CJU → GMP May 29, 11:15 UTCMay 29, 11:50 UTC35m
2026-05-29 KAL1177 GMP → CJU May 29, 09:00 UTCMay 29, 09:25 UTC25m
2026-05-29 KAL1244 CJU → GMP May 29, 07:20 UTCMay 29, 07:55 UTC35m
2026-05-29 KAL1113 GMP → CJU May 29, 04:50 UTCMay 29, 05:10 UTC20m
2026-05-29 KAL2106 HND → GMP May 29, 00:40 UTCMay 29, 02:40 UTC2h 0m
2026-05-28 KAL2105 GMP → HND May 28, 10:00 UTCMay 28, 11:45 UTC1h 45m
2026-05-28 KAL1246 CJU → GMP May 28, 07:25 UTCMay 28, 07:55 UTC30m
2026-05-28 KAL1121 GMP → CJU May 28, 04:50 UTCMay 28, 05:15 UTC25m
2026-05-28 KAL1188 CJU → GMP May 28, 02:55 UTCMay 28, 03:25 UTC30m
2026-05-28 KAL1055 GMP → CJU May 28, 00:25 UTCMay 28, 00:50 UTC25m
2026-05-27 KAL1312 CJU → GMP May 27, 11:30 UTCMay 27, 12:00 UTC30m
2026-05-27 KAL1177 GMP → CJU May 27, 09:00 UTCMay 27, 09:25 UTC25m
2026-05-27 KAL1244 CJU → GMP May 27, 07:25 UTCMay 27, 07:45 UTC20m
2026-05-27 KAL1244 CJU → GMP May 27, 07:05 UTCMay 27, 07:20 UTC15m
2026-05-27 KAL1113 GMP → CJU May 27, 04:49 UTCMay 27, 05:14 UTC25m
2026-05-27 KAL2106 HND → GMP May 27, 00:49 UTCMay 27, 02:34 UTC1h 45m
2026-05-26 KAL2105 GMP → HND May 26, 09:55 UTCMay 26, 11:34 UTC1h 40m
2026-05-26 KAL1246 CJU → GMP May 26, 07:24 UTCMay 26, 07:55 UTC30m
2026-05-26 KAL1121 GMP → CJU May 26, 04:54 UTCMay 26, 05:15 UTC20m
2026-05-26 KAL1188 CJU → GMP May 26, 03:00 UTCMay 26, 03:35 UTC35m
2026-05-26 KAL1055 GMP → CJU May 26, 00:19 UTCMay 26, 00:44 UTC25m
2026-05-25 KAL1312 CJU → GMP May 25, 11:10 UTCMay 25, 11:40 UTC30m
2026-05-25 KAL1177 GMP → CJU May 25, 08:45 UTCMay 25, 09:10 UTC25m
2026-05-25 KAL1244 CJU → GMP May 25, 07:05 UTCMay 25, 07:35 UTC30m
2026-05-25 KAL1113 GMP → CJU May 25, 04:40 UTCMay 25, 05:00 UTC20m
2026-05-25 KAL1188 CJU → GMP May 25, 02:55 UTCMay 25, 03:30 UTC35m
2026-05-24 KAL2058 SHA → GMP May 24, 12:25 UTCMay 24, 12:55 UTC30m
2026-05-24 KAL2057 GMP → SHA May 24, 07:20 UTCMay 24, 07:45 UTC25m
2026-05-24 KAL2118 KIX → GMP May 24, 04:00 UTCMay 24, 05:20 UTC1h 20m
2026-05-24 KAL2117 GMP → KIX May 24, 00:50 UTCMay 24, 02:05 UTC1h 15m
2026-05-23 KAL2057 GMP → SHA May 23, 07:15 UTCMay 23, 12:20 UTC5h 5m
2026-05-23 KAL2118 KIX → GMP May 23, 03:45 UTCMay 23, 05:15 UTC1h 30m
2026-05-23 KAL2117 GMP → KIX May 23, 00:30 UTCMay 23, 01:55 UTC1h 25m
2026-05-22 KAL2058 SHA → GMP May 22, 11:55 UTCMay 22, 12:30 UTC35m
2026-05-22 KAL2057 GMP → SHA May 22, 07:15 UTCMay 22, 07:40 UTC25m
2026-05-22 KAL2118 KIX → GMP May 22, 03:55 UTCMay 22, 05:20 UTC1h 25m
2026-05-22 KAL2117 GMP → KIX May 22, 00:30 UTCMay 22, 01:45 UTC1h 15m
2026-05-21 KAL1312 CJU → GMP May 21, 11:45 UTCMay 21, 12:15 UTC30m
2026-05-21 KAL1177 GMP → CJU May 21, 09:15 UTCMay 21, 09:40 UTC25m
2026-05-21 KAL1244 CJU → GMP May 21, 07:30 UTCMay 21, 08:00 UTC30m
2026-05-21 KAL1113 GMP → CJU May 21, 05:00 UTCMay 21, 05:25 UTC25m
2026-05-21 KAL2106 HND → GMP May 21, 00:45 UTCMay 21, 02:50 UTC2h 5m
2026-05-20 KAL2105 GMP → HND May 20, 10:15 UTCMay 20, 12:05 UTC1h 50m
2026-05-20 KAL1246 CJU → GMP May 20, 07:30 UTCMay 20, 08:10 UTC40m
2026-05-20 KAL1121 GMP → CJU May 20, 04:55 UTCMay 20, 05:20 UTC25m
2026-05-20 KAL1188 CJU → GMP May 20, 03:00 UTCMay 20, 03:35 UTC35m
2026-05-20 KAL1055 GMP → CJU May 20, 00:35 UTCMay 20, 01:00 UTC25m
2026-05-19 KAL1312 CJU → GMP May 19, 11:10 UTCMay 19, 11:40 UTC30m
2026-05-19 KAL1177 GMP → CJU May 19, 08:40 UTCMay 19, 09:10 UTC30m
2026-05-19 KAL1244 CJU → GMP May 19, 07:00 UTCMay 19, 07:30 UTC30m

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?
Yes. Mode-S 71BD84 is currently airborne.
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 18 distinct callsigns, including KAL2118, KAL2117, KAL2057, KAL1244, KAL1188.