Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

71BC19

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

Currently assigned to HL7419 · BOEING 747-400

Hex
71BC19
Octal
34336031
Decimal
7,453,721
Country
KR
Tail
HL7419
Type
B744
No current signal · last broadcast 47m ago
Flights observed
137
Distinct callsigns
20
Country
KR
Last broadcast
47m ago

Last known position

Most recent position reported by Mode-S 71BC19.

Country allocation

The ICAO 24-bit address 71BC19 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
AIH587 Alpine Air Chile 29 2026-05-30
AIH242 Alpine Air Chile 16 2026-05-17
AIH588 Alpine Air Chile 11 2026-05-28
AIH797 - 9 2026-05-25
AIH795 Alpine Air Chile 9 2026-05-20
AIH798 - 8 2026-05-25
AIH967 - 6 2026-05-26
AIH796 Alpine Air Chile 6 2026-05-20
AIH789 - 5 2026-05-22
AIH968 - 4 2026-05-26
AIH790 - 4 2026-05-22
AIH241 Alpine Air Chile 4 2026-05-18
AIH969 - 3 2026-05-09
AIH248 Alpine Air Chile 3 2026-04-30
AIH970 - 2 2026-05-10
AIH954 - 2 2026-05-24
AIH932 - 2 2026-05-28
AIH931 Alpine Air Chile 2 2026-05-28
AIH776 - 2 2026-04-27
AIH775 - 2 2026-04-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 AIH587 ANC → JFK May 30, 02:06 UTCMay 30, 08:15 UTC6h 9m
2026-05-29 AIH587 ANC → JFK May 29, 16:25 UTCMay 29, 22:35 UTC6h 10m
2026-05-29 AIH587 ANC → JFK May 29, 07:55 UTCMay 29, 15:00 UTC7h 5m
2026-05-28 AIH932 - May 28, 22:25 UTCMay 29, 05:15 UTC6h 50m
2026-05-28 AIH931 ICN → HAN May 28, 15:55 UTCMay 28, 19:30 UTC3h 35m
2026-05-28 AIH588 BRU → ICN May 28, 06:30 UTCMay 28, 06:50 UTC20m
2026-05-27 AIH588 BRU → ICN May 27, 19:40 UTCMay 28, 05:40 UTC10h 0m
2026-05-27 AIH587 ANC → JFK May 27, 09:40 UTCMay 27, 16:40 UTC7h 0m
2026-05-27 AIH587 ANC → JFK May 27, 00:44 UTCMay 27, 06:49 UTC6h 5m
2026-05-26 AIH587 ANC → JFK May 26, 15:24 UTCMay 26, 22:54 UTC7h 30m
2026-05-26 AIH968 HKG → ICN May 26, 06:54 UTCMay 26, 10:05 UTC3h 10m
2026-05-26 AIH967 ICN → HKG May 26, 01:24 UTCMay 26, 04:20 UTC2h 55m
2026-05-25 AIH798 - May 25, 21:45 UTCMay 25, 22:10 UTC25m
2026-05-25 AIH798 - May 25, 10:50 UTCMay 25, 20:55 UTC10h 5m
2026-05-25 AIH797 VIE → MXP May 25, 06:45 UTCMay 25, 07:50 UTC1h 5m
2026-05-24 AIH797 - May 24, 14:25 UTCMay 25, 04:30 UTC14h 5m
2026-05-24 AIH954 HKG → ICN May 24, 02:40 UTCMay 24, 05:35 UTC2h 55m
2026-05-23 AIH954 - May 23, 22:50 UTCMay 23, 23:20 UTC30m
2026-05-23 AIH953 - May 23, 15:05 UTCMay 23, 17:50 UTC2h 45m
2026-05-23 AIH968 HKG → ICN May 23, 08:05 UTCMay 23, 11:05 UTC3h 0m
2026-05-23 AIH967 - May 23, 05:20 UTCMay 23, 05:30 UTC10m
2026-05-23 AIH967 - May 23, 02:30 UTCMay 23, 04:40 UTC2h 10m
2026-05-22 AIH790 - May 22, 21:10 UTCMay 22, 21:30 UTC20m
2026-05-22 AIH790 - May 22, 10:30 UTCMay 22, 14:25 UTC3h 55m
2026-05-22 AIH789 VIE → MXP May 22, 06:20 UTCMay 22, 07:35 UTC1h 15m
2026-05-21 AIH789 - May 21, 14:15 UTCMay 22, 03:50 UTC13h 35m
2026-05-20 AIH796 FRA → ICN May 20, 20:40 UTCMay 20, 21:05 UTC25m
2026-05-20 AIH796 FRA → ICN May 20, 10:15 UTCMay 20, 20:05 UTC9h 50m
2026-05-20 AIH795 VIE → FRA May 20, 06:25 UTCMay 20, 07:25 UTC1h 0m
2026-05-19 AIH795 VIE → FRA May 19, 14:15 UTCMay 20, 04:10 UTC13h 55m
2026-05-18 AIH933 ICN → ICN May 18, 17:25 UTCMay 19, 07:00 UTC13h 34m
2026-05-18 AIH241 SEA → ICN May 18, 04:00 UTCMay 18, 14:50 UTC10h 50m
2026-05-17 AIH242 ANC → ORD May 17, 21:55 UTCMay 18, 01:30 UTC3h 35m
2026-05-17 AIH242 ANC → ORD May 17, 17:45 UTCMay 17, 19:40 UTC1h 55m
2026-05-17 AIH242 ANC → ORD May 17, 09:35 UTCMay 17, 15:05 UTC5h 30m
2026-05-17 AIH242 ANC → ORD May 17, 00:20 UTCMay 17, 08:05 UTC7h 45m
2026-05-16 AIH241 SEA → ICN May 16, 04:20 UTCMay 16, 15:10 UTC10h 51m
2026-05-15 AIH242 ANC → ORD May 15, 22:00 UTCMay 16, 01:50 UTC3h 50m
2026-05-15 AIH242 ANC → ORD May 15, 17:30 UTCMay 15, 19:20 UTC1h 50m
2026-05-15 AIH242 ANC → ORD May 15, 08:35 UTCMay 15, 14:10 UTC5h 35m
2026-05-14 AIH242 ANC → ORD May 14, 22:50 UTCMay 15, 07:05 UTC8h 15m
2026-05-14 AIH588 BRU → ICN May 14, 07:55 UTCMay 14, 08:15 UTC20m
2026-05-13 AIH588 BRU → ICN May 13, 20:40 UTCMay 14, 00:50 UTC4h 10m
2026-05-13 AIH587 ANC → JFK May 13, 10:25 UTCMay 13, 17:15 UTC6h 50m
2026-05-13 AIH587 ANC → JFK May 13, 01:50 UTCMay 13, 08:05 UTC6h 15m
2026-05-12 AIH587 ANC → JFK May 12, 16:20 UTCMay 12, 23:55 UTC7h 35m
2026-05-12 AIH957 - May 12, 07:35 UTCMay 12, 13:30 UTC5h 55m
2026-05-11 AIH798 - May 11, 20:35 UTCMay 11, 20:45 UTC10m
2026-05-11 AIH798 - May 11, 10:05 UTCMay 11, 13:35 UTC3h 30m
2026-05-11 AIH797 VIE → MXP May 11, 06:30 UTCMay 11, 07:40 UTC1h 10m

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 HL7419 page for operator, model, and routing details .

Mode-S 71BC19 frequently asked

What is Mode-S code 71BC19?
71BC19 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL7419.
Where is Mode-S 71BC19 registered?
Mode-S code 71BC19 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 71BC19 broadcasting right now?
No active broadcast right now. Last signal was 47m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71BC19, octal 34336031, decimal 7,453,721.
What flights does 71BC19 operate?
Mode-S 71BC19 has broadcast 20 distinct callsigns, including AIH587, AIH242, AIH588, AIH797, AIH795.