Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

71BF44

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

Currently assigned to HL7744 · AIRBUS A-320

Hex
71BF44
Octal
34337504
Decimal
7,454,532
Country
KR
Tail
HL7744
Type
A320
No current signal · last broadcast 3h ago
Flights observed
304
Distinct callsigns
20
Country
KR
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 71BF44.

Country allocation

The ICAO 24-bit address 71BF44 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
ABL8813 - 26 2026-07-12
ABL8802 - 25 2026-07-11
ABL8806 - 23 2026-07-12
ABL8807 - 20 2026-07-12
ABL8024 - 19 2026-07-12
ABL8827 - 16 2026-07-13
ABL8816 - 16 2026-07-13
ABL8822 - 15 2026-07-13
ABL8821 - 14 2026-07-13
ABL8019 - 9 2026-07-08
ABL8818 - 8 2026-07-08
ABL8013 - 8 2026-06-28
ABL321 - 6 2026-07-11
ABL8817 Air Busan 5 2026-06-07
ABL8804 - 5 2026-07-08
ABL8114 - 5 2026-07-08
ABL8025 - 5 2026-07-02
ABL8809 - 4 2026-07-08
ABL8808 Air Busan 4 2026-06-07
ABL8305 - 4 2026-07-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 ABL123 - Jul 14, 02:25 UTCJul 14, 03:25 UTC1h 0m
2026-07-13 ABL124 PUS → KIX Jul 13, 23:55 UTCJul 14, 01:00 UTC1h 5m
2026-07-13 ABL8827 GMP → PUS Jul 13, 11:10 UTCJul 13, 11:50 UTC40m
2026-07-13 ABL8822 PUS → GMP Jul 13, 09:30 UTCJul 13, 10:15 UTC45m
2026-07-13 ABL8821 GMP → PUS Jul 13, 08:01 UTCJul 13, 08:45 UTC45m
2026-07-13 ABL8816 PUS → GMP Jul 13, 06:25 UTCJul 13, 07:05 UTC40m
2026-07-12 ABL8024 - Jul 12, 12:10 UTCJul 12, 12:50 UTC40m
2026-07-12 ABL8305 - Jul 12, 09:35 UTCJul 12, 09:50 UTC15m
2026-07-12 ABL8304 - Jul 12, 08:05 UTCJul 12, 08:20 UTC15m
2026-07-12 ABL8115 - Jul 12, 05:50 UTCJul 12, 06:01 UTC10m
2026-07-12 ABL8813 GMP → PUS Jul 12, 04:01 UTCJul 12, 04:40 UTC40m
2026-07-12 ABL8806 PUS → GMP Jul 12, 02:05 UTCJul 12, 02:50 UTC45m
2026-07-12 ABL8807 GMP → PUS Jul 12, 00:15 UTCJul 12, 00:55 UTC40m
2026-07-11 ABL8802 PUS → GMP Jul 11, 22:25 UTCJul 11, 23:10 UTC45m
2026-07-11 ABL8134 - Jul 11, 12:00 UTCJul 11, 12:30 UTC30m
2026-07-11 ABL8135 - Jul 11, 09:05 UTCJul 11, 09:20 UTC15m
2026-07-11 ABL321 PUS → PUS Jul 11, 01:40 UTCJul 11, 06:05 UTC4h 25m
2026-07-10 ABL8101 - Jul 10, 21:55 UTCJul 10, 22:10 UTC15m
2026-07-10 ABL121 KIX → PUS Jul 10, 10:25 UTCJul 10, 11:30 UTC1h 5m
2026-07-10 ABL122 PUS → KIX Jul 10, 07:55 UTCJul 10, 09:05 UTC1h 10m
2026-07-10 ABL321 PUS → PUS Jul 10, 01:55 UTCJul 10, 06:45 UTC4h 50m
2026-07-10 ABL8100 - Jul 10, 00:05 UTCJul 10, 00:20 UTC15m
2026-07-09 ABL8101 - Jul 9, 22:05 UTCJul 9, 22:25 UTC20m
2026-07-09 ABL321 PUS → PUS Jul 9, 02:00 UTCJul 9, 08:10 UTC6h 10m
2026-07-08 ABL8114 - Jul 8, 11:15 UTCJul 8, 11:35 UTC20m
2026-07-08 ABL8019 - Jul 8, 09:10 UTCJul 8, 09:50 UTC40m
2026-07-08 ABL8818 PUS → GMP Jul 8, 07:25 UTCJul 8, 08:10 UTC45m
2026-07-08 ABL8809 GMP → PUS Jul 8, 01:55 UTCJul 8, 02:45 UTC50m
2026-07-08 ABL8804 PUS → GMP Jul 8, 00:10 UTCJul 8, 00:55 UTC45m
2026-07-07 ABL8114 - Jul 7, 11:15 UTCJul 7, 11:25 UTC10m
2026-07-07 ABL8019 - Jul 7, 09:05 UTCJul 7, 09:40 UTC35m
2026-07-07 ABL8818 PUS → GMP Jul 7, 07:20 UTCJul 7, 08:00 UTC40m
2026-07-06 ABL8827 GMP → PUS Jul 6, 11:15 UTCJul 6, 11:50 UTC35m
2026-07-06 ABL8822 PUS → GMP Jul 6, 09:30 UTCJul 6, 10:15 UTC45m
2026-07-06 ABL8821 GMP → PUS Jul 6, 07:55 UTCJul 6, 08:35 UTC40m
2026-07-06 ABL8816 PUS → GMP Jul 6, 06:20 UTCJul 6, 07:05 UTC45m
2026-07-05 ABL8024 - Jul 5, 12:05 UTCJul 5, 12:45 UTC40m
2026-07-05 ABL8305 - Jul 5, 09:25 UTCJul 5, 09:45 UTC20m
2026-07-05 ABL8813 GMP → PUS Jul 5, 04:00 UTCJul 5, 04:40 UTC40m
2026-07-05 ABL8806 PUS → GMP Jul 5, 02:00 UTCJul 5, 02:45 UTC45m
2026-07-05 ABL8807 GMP → PUS Jul 5, 00:20 UTCJul 5, 01:05 UTC45m
2026-07-04 ABL8802 PUS → GMP Jul 4, 22:30 UTCJul 4, 23:15 UTC45m
2026-07-04 ABL8813 GMP → PUS Jul 4, 03:55 UTCJul 4, 04:35 UTC40m
2026-07-04 ABL8806 PUS → GMP Jul 4, 02:05 UTCJul 4, 02:50 UTC45m
2026-07-04 ABL8807 GMP → PUS Jul 4, 00:20 UTCJul 4, 01:05 UTC45m
2026-07-03 ABL8802 PUS → GMP Jul 3, 22:30 UTCJul 3, 23:15 UTC45m
2026-07-03 ABL8300 - Jul 3, 00:40 UTCJul 3, 01:00 UTC20m
2026-07-02 ABL8025 - Jul 2, 22:20 UTCJul 2, 22:55 UTC35m
2026-07-02 ABL8304 - Jul 2, 07:35 UTCJul 2, 07:55 UTC20m
2026-07-02 ABL8115 - Jul 2, 05:40 UTCJul 2, 05:55 UTC15m

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 HL7744 page for operator, model, and routing details .

Mode-S 71BF44 frequently asked

What is Mode-S code 71BF44?
71BF44 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL7744.
Where is Mode-S 71BF44 registered?
Mode-S code 71BF44 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 71BF44 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 71BF44, octal 34337504, decimal 7,454,532.
What flights does 71BF44 operate?
Mode-S 71BF44 has broadcast 20 distinct callsigns, including ABL8813, ABL8802, ABL8806, ABL8807, ABL8024.