Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

71BF29

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

Currently assigned to HL7729 · AIRBUS A-321

Hex
71BF29
Octal
34337451
Decimal
7,454,505
Country
KR
Tail
HL7729
Type
A321
No current signal · last broadcast 2h ago
Flights observed
251
Distinct callsigns
20
Country
KR
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 71BF29.

Country allocation

The ICAO 24-bit address 71BF29 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
ABL8826 - 13 2026-07-08
ABL8811 - 11 2026-07-14
ABL8040 - 11 2026-07-14
ABL8021 - 10 2026-07-09
ABL8028 - 9 2026-07-09
ABL337 - 9 2026-07-12
ABL125 - 8 2026-07-04
ABL8803 - 7 2026-06-17
ABL126 - 7 2026-07-04
ABL148 - 6 2026-07-09
ABL134 Air Busan 6 2026-06-06
ABL133 Air Busan 6 2026-06-05
ABL122 - 6 2026-07-04
ABL121 - 6 2026-07-04
ABL8823 - 5 2026-07-06
ABL8820 - 5 2026-07-06
ABL8117 - 5 2026-07-14
ABL147 - 5 2026-07-10
ABL146 - 5 2026-07-11
ABL144 - 5 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 ABL8117 - Jul 14, 08:20 UTCJul 14, 08:35 UTC15m
2026-07-14 ABL8110 - Jul 14, 06:40 UTCJul 14, 06:55 UTC15m
2026-07-14 ABL8111 - Jul 14, 04:45 UTCJul 14, 05:00 UTC15m
2026-07-14 ABL8811 GMP → PUS Jul 14, 02:55 UTCJul 14, 03:35 UTC40m
2026-07-14 ABL8040 - Jul 14, 01:20 UTCJul 14, 02:00 UTC40m
2026-07-13 ABL8105 - Jul 13, 23:00 UTCJul 13, 23:15 UTC15m
2026-07-13 ABL8172 - Jul 13, 10:55 UTCJul 13, 11:15 UTC20m
2026-07-13 ABL8173 - Jul 13, 08:30 UTCJul 13, 08:50 UTC20m
2026-07-13 ABL321 PUS → PUS Jul 13, 01:50 UTCJul 13, 06:15 UTC4h 25m
2026-07-13 ABL8100 - Jul 13, 00:15 UTCJul 13, 00:35 UTC20m
2026-07-12 ABL337 PUS → PUS Jul 12, 01:10 UTCJul 12, 07:15 UTC6h 5m
2026-07-11 ABL143 - Jul 11, 11:10 UTCJul 11, 11:35 UTC25m
2026-07-11 ABL144 - Jul 11, 09:00 UTCJul 11, 09:25 UTC25m
2026-07-11 ABL146 - Jul 11, 05:15 UTCJul 11, 05:35 UTC20m
2026-07-10 ABL147 - Jul 10, 00:40 UTCJul 10, 01:15 UTC35m
2026-07-09 ABL148 - Jul 9, 22:40 UTCJul 9, 23:05 UTC25m
2026-07-09 ABL8132 - Jul 9, 10:05 UTCJul 9, 10:20 UTC15m
2026-07-09 ABL8021 - Jul 9, 08:00 UTCJul 9, 08:40 UTC40m
2026-07-09 ABL8028 - Jul 9, 06:10 UTCJul 9, 06:55 UTC45m
2026-07-09 ABL8109 - Jul 9, 04:20 UTCJul 9, 04:40 UTC20m
2026-07-09 ABL8102 - Jul 9, 02:40 UTCJul 9, 03:15 UTC35m
2026-07-09 ABL8027 - Jul 9, 00:35 UTCJul 9, 01:15 UTC40m
2026-07-08 ABL8826 PUS → GMP Jul 8, 11:30 UTCJul 8, 12:20 UTC50m
2026-07-08 ABL8116 - Jul 8, 10:10 UTCJul 8, 10:25 UTC15m
2026-07-08 ABL8117 - Jul 8, 08:15 UTCJul 8, 08:30 UTC15m
2026-07-08 ABL8110 - Jul 8, 06:55 UTCJul 8, 07:15 UTC20m
2026-07-08 ABL8111 - Jul 8, 04:50 UTCJul 8, 05:10 UTC20m
2026-07-08 ABL8040 - Jul 8, 01:05 UTCJul 8, 01:45 UTC40m
2026-07-07 ABL8116 - Jul 7, 09:55 UTCJul 7, 10:15 UTC20m
2026-07-07 ABL8117 - Jul 7, 08:05 UTCJul 7, 08:20 UTC15m
2026-07-07 ABL8110 - Jul 7, 06:40 UTCJul 7, 07:10 UTC30m
2026-07-07 ABL8111 - Jul 7, 04:45 UTCJul 7, 05:00 UTC15m
2026-07-07 ABL8811 GMP → PUS Jul 7, 02:55 UTCJul 7, 03:40 UTC45m
2026-07-07 ABL8040 - Jul 7, 01:15 UTCJul 7, 02:00 UTC45m
2026-07-06 ABL8105 - Jul 6, 23:10 UTCJul 6, 23:30 UTC20m
2026-07-06 ABL8823 GMP → PUS Jul 6, 10:05 UTCJul 6, 10:45 UTC40m
2026-07-06 ABL8820 PUS → GMP Jul 6, 08:20 UTCJul 6, 09:10 UTC50m
2026-07-06 ABL8819 GMP → PUS Jul 6, 06:45 UTCJul 6, 07:30 UTC45m
2026-07-06 ABL8812 PUS → GMP Jul 6, 05:05 UTCJul 6, 05:50 UTC45m
2026-07-06 ABL123 - Jul 6, 02:30 UTCJul 6, 03:30 UTC1h 0m
2026-07-05 ABL124 PUS → KIX Jul 5, 23:50 UTCJul 6, 01:10 UTC1h 20m
2026-07-05 ABL1325 - Jul 5, 09:00 UTCJul 5, 09:30 UTC30m
2026-07-05 ABL338 - Jul 5, 06:45 UTCJul 5, 07:10 UTC25m
2026-07-05 ABL337 - Jul 5, 00:55 UTCJul 5, 01:45 UTC50m
2026-07-04 ABL121 - Jul 4, 10:20 UTCJul 4, 11:25 UTC1h 5m
2026-07-04 ABL122 PUS → KIX Jul 4, 07:50 UTCJul 4, 08:50 UTC1h 0m
2026-07-04 ABL125 - Jul 4, 05:15 UTCJul 4, 06:15 UTC1h 0m
2026-07-04 ABL126 PUS → KIX Jul 4, 02:35 UTCJul 4, 03:45 UTC1h 10m
2026-07-04 ABL147 - Jul 4, 00:45 UTCJul 4, 01:15 UTC30m
2026-07-03 ABL148 - Jul 3, 22:50 UTCJul 3, 23:10 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 HL7729 page for operator, model, and routing details .

Mode-S 71BF29 frequently asked

What is Mode-S code 71BF29?
71BF29 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL7729.
Where is Mode-S 71BF29 registered?
Mode-S code 71BF29 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 71BF29 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71BF29, octal 34337451, decimal 7,454,505.
What flights does 71BF29 operate?
Mode-S 71BF29 has broadcast 20 distinct callsigns, including ABL8826, ABL8811, ABL8040, ABL8021, ABL8028.