Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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
No current signal · last broadcast 3h ago
Flights observed
399
Distinct callsigns
20
Country
KR
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 71BF30.

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
ABL8021 - 16 2026-06-25
ABL166 Air Busan 16 2026-05-06
ABL164 Air Busan 16 2026-05-04
ABL8028 - 15 2026-06-25
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
ABL8811 - 10 2026-06-27
ABL8117 - 10 2026-07-13
ABL122 - 10 2026-07-12
ABL121 - 10 2026-07-12
ABL171 Air Busan 9 2026-05-06
ABL165 Air Busan 9 2026-05-04
ABL148 - 9 2026-07-12
ABL125 - 9 2026-07-12
ABL8116 - 8 2026-07-13
ABL8111 - 8 2026-07-13
ABL8110 - 8 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 ABL411 - Jul 14, 13:20 UTCJul 14, 15:20 UTC2h 0m
2026-07-14 ABL143 - Jul 14, 11:15 UTCJul 14, 11:50 UTC35m
2026-07-14 ABL144 - Jul 14, 09:05 UTCJul 14, 09:25 UTC20m
2026-07-14 ABL145 - Jul 14, 07:05 UTCJul 14, 07:50 UTC45m
2026-07-14 ABL146 - Jul 14, 05:20 UTCJul 14, 05:35 UTC15m
2026-07-14 ABL141 - Jul 14, 03:00 UTCJul 14, 03:40 UTC40m
2026-07-14 ABL142 - Jul 14, 01:25 UTCJul 14, 01:40 UTC15m
2026-07-13 ABL8116 - Jul 13, 10:40 UTCJul 13, 10:55 UTC15m
2026-07-13 ABL8117 - Jul 13, 08:25 UTCJul 13, 08:40 UTC15m
2026-07-13 ABL8110 - Jul 13, 07:01 UTCJul 13, 07:25 UTC25m
2026-07-13 ABL8111 - Jul 13, 04:45 UTCJul 13, 05:01 UTC15m
2026-07-12 ABL148 - Jul 12, 22:50 UTCJul 12, 23:10 UTC20m
2026-07-12 ABL121 KIX → PUS Jul 12, 10:10 UTCJul 12, 11:15 UTC1h 5m
2026-07-12 ABL122 PUS → KIX Jul 12, 07:50 UTCJul 12, 08:55 UTC1h 5m
2026-07-12 ABL125 - Jul 12, 05:25 UTCJul 12, 06:25 UTC1h 0m
2026-07-12 ABL126 PUS → KIX Jul 12, 02:45 UTCJul 12, 03:55 UTC1h 10m
2026-07-12 ABL147 - Jul 12, 00:40 UTCJul 12, 01:10 UTC30m
2026-07-11 ABL148 - Jul 11, 23:00 UTCJul 11, 23:25 UTC25m
2026-07-11 ABL8116 - Jul 11, 11:35 UTCJul 11, 11:55 UTC20m
2026-07-11 ABL8117 - Jul 11, 08:30 UTCJul 11, 08:45 UTC15m
2026-07-11 ABL8819 GMP → PUS Jul 11, 06:30 UTCJul 11, 07:20 UTC50m
2026-07-11 ABL8812 PUS → GMP Jul 11, 04:45 UTCJul 11, 05:25 UTC40m
2026-07-11 ABL123 KIX → PUS Jul 11, 02:20 UTCJul 11, 03:15 UTC55m
2026-07-10 ABL124 PUS → KIX Jul 10, 23:45 UTCJul 11, 00:50 UTC1h 5m
2026-07-10 ABL411 PUS → PUS Jul 10, 13:10 UTCJul 10, 21:10 UTC8h 0m
2026-07-10 ABL8116 - Jul 10, 10:50 UTCJul 10, 11:10 UTC20m
2026-07-10 ABL8117 - Jul 10, 09:00 UTCJul 10, 09:25 UTC25m
2026-07-10 ABL146 - Jul 10, 05:30 UTCJul 10, 06:00 UTC30m
2026-07-10 ABL8872 PUS → GMP Jul 10, 01:10 UTCJul 10, 01:55 UTC45m
2026-07-09 ABL143 - Jul 9, 11:10 UTCJul 9, 11:55 UTC45m
2026-07-09 ABL144 - Jul 9, 09:20 UTCJul 9, 09:35 UTC15m
2026-07-09 ABL145 - Jul 9, 07:35 UTCJul 9, 08:15 UTC40m
2026-07-09 ABL146 - Jul 9, 05:25 UTCJul 9, 06:05 UTC40m
2026-07-09 ABL141 - Jul 9, 03:05 UTCJul 9, 03:50 UTC45m
2026-07-09 ABL142 - Jul 9, 01:20 UTCJul 9, 01:35 UTC15m
2026-07-08 ABL8803 GMP → PUS Jul 8, 23:00 UTCJul 8, 23:45 UTC45m
2026-07-08 ABL8824 PUS → GMP Jul 8, 10:10 UTCJul 8, 11:00 UTC50m
2026-07-08 ABL8132 - Jul 8, 08:50 UTCJul 8, 09:10 UTC20m
2026-07-08 ABL8109 - Jul 8, 03:05 UTCJul 8, 03:25 UTC20m
2026-07-08 ABL8102 - Jul 8, 01:45 UTCJul 8, 02:05 UTC20m
2026-07-07 ABL8105 - Jul 7, 23:20 UTCJul 7, 23:35 UTC15m
2026-07-07 ABL411 PUS → PUS Jul 7, 13:15 UTCJul 7, 21:25 UTC8h 10m
2026-07-07 ABL121 KIX → PUS Jul 7, 10:40 UTCJul 7, 11:40 UTC1h 0m
2026-07-07 ABL122 PUS → KIX Jul 7, 08:20 UTCJul 7, 09:20 UTC1h 0m
2026-07-07 ABL322 - Jul 7, 06:00 UTCJul 7, 07:05 UTC1h 5m
2026-07-06 ABL121 KIX → PUS Jul 6, 10:15 UTCJul 6, 11:25 UTC1h 10m
2026-07-06 ABL122 PUS → KIX Jul 6, 07:45 UTCJul 6, 08:45 UTC1h 0m
2026-07-06 ABL147 - Jul 6, 00:40 UTCJul 6, 01:15 UTC35m
2026-07-05 ABL148 - Jul 5, 22:45 UTCJul 5, 23:20 UTC35m
2026-07-05 ABL121 KIX → PUS Jul 5, 10:40 UTCJul 5, 11:40 UTC1h 0m

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?
No active broadcast right now. Last signal was 3h ago.
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, ABL8021, ABL166, ABL164, ABL8028.