Apparatus

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sensors Mode-S transponder

71BF30

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

Currently assigned to HL7730 · AIRBUS A-321

Hex
71BF30
Octal
34337460
Decimal
7,454,512
Country
KR
Tail
HL7730
Type
A321
Broadcasting now · callsign ABL711 · 28,975 ft
Flights observed
190
Distinct callsigns
20
Country
KR
Last broadcast
1d ago

Current position

71BF30 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 71BF30 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
ABL3935 Air Busan 17 2026-05-05
ABL166 Air Busan 16 2026-05-06
ABL164 Air Busan 16 2026-05-04
ABL3945 Air Busan 14 2026-05-05
ABL175 Air Busan 14 2026-05-05
ABL163 Air Busan 14 2026-05-05
ABL176 Air Busan 12 2026-05-03
ABL8028 Air Busan 11 2026-05-29
ABL8021 Air Busan 11 2026-05-29
ABL171 Air Busan 9 2026-05-06
ABL165 Air Busan 9 2026-05-04
ABL172 Air Busan 7 2026-05-06
ABL8027 Air Busan 3 2026-05-27
ABL337 Air Busan 3 2026-05-24
ABL1325 Air Busan 3 2026-05-24
ABL112 Air Busan 3 2026-05-22
ABL111 Air Busan 3 2026-05-23
ABL8824 Air Busan 2 2026-05-27
ABL712 Air Busan 2 2026-05-26
ABL134 Air Busan 2 2026-05-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 ABL8021 GMP → CJU May 29, 06:35 UTCMay 29, 07:00 UTC25m
2026-05-29 ABL8028 CJU → GMP May 29, 04:45 UTCMay 29, 05:20 UTC35m
2026-05-28 ABL8021 GMP → CJU May 28, 07:15 UTCMay 28, 07:45 UTC30m
2026-05-28 ABL8028 CJU → GMP May 28, 05:45 UTCMay 28, 06:15 UTC30m
2026-05-27 ABL8027 GMP → CJU May 27, 23:15 UTCMay 27, 23:45 UTC30m
2026-05-27 ABL8824 PUS → GMP May 27, 10:40 UTCMay 27, 11:10 UTC30m
2026-05-27 ABL8021 GMP → CJU May 27, 07:20 UTCMay 27, 07:45 UTC25m
2026-05-27 ABL8028 CJU → GMP May 27, 05:40 UTCMay 27, 06:15 UTC35m
2026-05-26 ABL712 CEB → PUS May 26, 13:40 UTCMay 26, 18:45 UTC5h 5m
2026-05-26 ABL8021 GMP → CJU May 26, 06:49 UTCMay 26, 07:15 UTC25m
2026-05-26 ABL8028 CJU → GMP May 26, 05:05 UTCMay 26, 05:34 UTC30m
2026-05-25 ABL8021 GMP → CJU May 25, 06:40 UTCMay 25, 07:05 UTC25m
2026-05-25 ABL8028 CJU → GMP May 25, 04:55 UTCMay 25, 05:40 UTC45m
2026-05-24 ABL1315 TAK → PUS May 24, 10:30 UTCMay 24, 10:55 UTC25m
2026-05-24 ABL1325 PUS → TAK May 24, 08:50 UTCMay 24, 09:15 UTC25m
2026-05-24 ABL337 PUS → YNJ May 24, 01:00 UTCMay 24, 07:00 UTC6h 0m
2026-05-23 ABL712 CEB → PUS May 23, 15:05 UTCMay 23, 18:50 UTC3h 45m
2026-05-23 ABL133 MYJ → PUS May 23, 09:45 UTCMay 23, 09:55 UTC10m
2026-05-23 ABL134 PUS → MYJ May 23, 08:00 UTCMay 23, 08:20 UTC20m
2026-05-23 ABL111 NRT → PUS May 23, 02:20 UTCMay 23, 03:30 UTC1h 9m
2026-05-22 ABL112 PUS → NRT May 22, 23:35 UTCMay 23, 00:55 UTC1h 20m
2026-05-22 ABL381 PUS → MFM May 22, 14:30 UTCMay 22, 16:00 UTC1h 30m
2026-05-22 ABL134 PUS → MYJ May 22, 08:05 UTCMay 22, 08:15 UTC10m
2026-05-22 ABL321 PUS → TAO May 22, 01:45 UTCMay 22, 05:55 UTC4h 10m
2026-05-21 ABL337 PUS → YNJ May 21, 00:55 UTCMay 21, 06:45 UTC5h 50m
2026-05-20 ABL8021 GMP → CJU May 20, 07:00 UTCMay 20, 07:25 UTC25m
2026-05-20 ABL8028 CJU → GMP May 20, 05:10 UTCMay 20, 05:55 UTC45m
2026-05-19 ABL8820 PUS → GMP May 19, 09:45 UTCMay 19, 10:15 UTC30m
2026-05-18 ABL8819 GMP → PUS May 18, 06:45 UTCMay 18, 07:15 UTC30m
2026-05-18 ABL8812 PUS → GMP May 18, 05:30 UTCMay 18, 06:01 UTC30m
2026-05-18 ABL111 NRT → PUS May 18, 02:20 UTCMay 18, 03:35 UTC1h 15m
2026-05-17 ABL112 PUS → NRT May 17, 13:55 UTCMay 18, 00:55 UTC11h 0m
2026-05-17 ABL1325 PUS → TAK May 17, 08:50 UTCMay 17, 09:20 UTC30m
2026-05-17 ABL337 PUS → YNJ May 17, 01:00 UTCMay 17, 01:45 UTC45m
2026-05-16 ABL8021 GMP → CJU May 16, 07:01 UTCMay 16, 07:25 UTC25m
2026-05-16 ABL8028 CJU → GMP May 16, 05:35 UTCMay 16, 06:06 UTC31m
2026-05-15 ABL8811 GMP → PUS May 15, 02:55 UTCMay 15, 03:25 UTC30m
2026-05-15 ABL8872 PUS → GMP May 15, 01:25 UTCMay 15, 01:55 UTC30m
2026-05-14 ABL8021 GMP → CJU May 14, 06:55 UTCMay 14, 07:30 UTC35m
2026-05-14 ABL8028 CJU → GMP May 14, 05:05 UTCMay 14, 05:45 UTC40m
2026-05-13 ABL8027 GMP → CJU May 13, 23:20 UTCMay 13, 23:55 UTC35m
2026-05-13 ABL8824 PUS → GMP May 13, 10:20 UTCMay 13, 11:00 UTC40m
2026-05-13 ABL8021 GMP → CJU May 13, 06:45 UTCMay 13, 07:20 UTC35m
2026-05-13 ABL8028 CJU → GMP May 13, 05:00 UTCMay 13, 05:40 UTC40m
2026-05-12 ABL1315 TAK → PUS May 12, 10:45 UTCMay 12, 11:05 UTC20m
2026-05-12 ABL1325 PUS → TAK May 12, 09:00 UTCMay 12, 09:30 UTC30m
2026-05-12 ABL181 CTS → PUS May 12, 03:50 UTCMay 12, 05:35 UTC1h 45m
2026-05-11 ABL792 TPE → PUS May 11, 08:50 UTCMay 11, 09:15 UTC25m
2026-05-11 ABL791 PUS → TPE May 11, 05:35 UTCMay 11, 07:35 UTC2h 0m
2026-05-11 ABL111 NRT → PUS May 11, 02:15 UTCMay 11, 03:35 UTC1h 20m

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 HL7730 page for operator, model, and routing details .

Mode-S 71BF30 frequently asked

What is Mode-S code 71BF30?
71BF30 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL7730.
Where is Mode-S 71BF30 registered?
Mode-S code 71BF30 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 71BF30 broadcasting right now?
Yes. Mode-S 71BF30 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71BF30, octal 34337460, decimal 7,454,512.
What flights does 71BF30 operate?
Mode-S 71BF30 has broadcast 20 distinct callsigns, including ABL3935, ABL166, ABL164, ABL3945, ABL175.