Apparatus

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sensors Mode-S transponder

71BC36

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

Currently assigned to HL7436 · BOEING 747-400

Hex
71BC36
Octal
34336066
Decimal
7,453,750
Country
KR
Tail
HL7436
Type
B744
Broadcasting now · callsign AIH248 · 35,000 ft
Flights observed
297
Distinct callsigns
20
Country
KR
Last broadcast
Jul 26, 16:15 UTC

Current position

71BC36 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 71BC36 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
AIH242 Alpine Air Chile 18 2026-06-14
AIH286 Alpine Air Chile 16 2026-06-12
AIH587 Alpine Air Chile 15 2026-07-22
AIH248 Alpine Air Chile 15 2026-07-18
AIH793 Alpine Air Chile 13 2026-07-26
AIH954 - 12 2026-07-26
AIH396 - 12 2026-07-14
AIH967 - 11 2026-07-21
AIH775 - 11 2026-07-16
AIH797 - 10 2026-07-20
AIH794 - 10 2026-07-13
AIH588 Alpine Air Chile 10 2026-07-23
AIH247 Alpine Air Chile 10 2026-07-18
AIH969 - 9 2026-07-03
AIH798 - 9 2026-07-20
AIH285 Alpine Air Chile 9 2026-06-12
AIH244 Alpine Air Chile 8 2026-05-26
AIH952 - 7 2026-06-27
AIH776 - 7 2026-07-16
AIH395 - 7 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AIH793 STN → FRA Jul 26, 15:00 UTCJul 26, 16:15 UTC1h 15m
2026-07-26 AIH954 HKG → ICN Jul 26, 08:25 UTCJul 26, 11:25 UTC3h 0m
2026-07-26 AIH954 - Jul 26, 05:40 UTCJul 26, 06:25 UTC45m
2026-07-26 AIH954 - Jul 26, 04:45 UTCJul 26, 05:00 UTC15m
2026-07-25 AIH953 - Jul 25, 21:40 UTCJul 25, 21:50 UTC10m
2026-07-25 AIH953 - Jul 25, 18:15 UTCJul 25, 18:55 UTC40m
2026-07-25 AIH3941 SIN → ICN Jul 25, 11:00 UTCJul 25, 15:35 UTC4h 35m
2026-07-25 AIH3931 BKK → SIN Jul 25, 06:20 UTCJul 25, 06:30 UTC10m
2026-07-25 AIH3931 BKK → SIN Jul 25, 00:35 UTCJul 25, 04:55 UTC4h 20m
2026-07-23 AIH932 - Jul 23, 22:25 UTCJul 24, 05:25 UTC7h 0m
2026-07-23 AIH931 ICN → HAN Jul 23, 15:55 UTCJul 23, 16:35 UTC40m
2026-07-23 AIH588 BRU → ICN Jul 23, 04:15 UTCJul 23, 04:35 UTC20m
2026-07-22 AIH588 BRU → ICN Jul 22, 17:40 UTCJul 23, 03:25 UTC9h 45m
2026-07-22 AIH587 ANC → JFK Jul 22, 10:20 UTCJul 22, 14:50 UTC4h 30m
2026-07-21 AIH587 ANC → JFK Jul 21, 23:15 UTCJul 22, 05:15 UTC6h 0m
2026-07-21 AIH587 ANC → JFK Jul 21, 14:35 UTCJul 21, 21:50 UTC7h 15m
2026-07-21 AIH968 HKG → ICN Jul 21, 06:15 UTCJul 21, 09:15 UTC3h 0m
2026-07-21 AIH967 - Jul 21, 01:00 UTCJul 21, 03:55 UTC2h 55m
2026-07-20 AIH798 MXP → ICN Jul 20, 10:40 UTCJul 20, 20:45 UTC10h 5m
2026-07-20 AIH797 VIE → MXP Jul 20, 06:55 UTCJul 20, 08:05 UTC1h 10m
2026-07-19 AIH797 - Jul 19, 14:30 UTCJul 20, 04:45 UTC14h 15m
2026-07-18 AIH247 ATL → ANC Jul 18, 21:05 UTCJul 19, 05:05 UTC8h 0m
2026-07-18 AIH247 ATL → ANC Jul 18, 13:00 UTCJul 18, 19:40 UTC6h 40m
2026-07-18 AIH248 ANC → ORD Jul 18, 09:10 UTCJul 18, 10:40 UTC1h 30m
2026-07-18 AIH248 ANC → ORD Jul 18, 00:55 UTCJul 18, 06:15 UTC5h 21m
2026-07-17 AIH248 ICN → ANC Jul 17, 15:44 UTCJul 17, 23:20 UTC7h 35m
2026-07-17 AIH3881 - Jul 17, 09:30 UTCJul 17, 10:05 UTC35m
2026-07-16 AIH3871 - Jul 16, 23:44 UTCJul 17, 00:25 UTC40m
2026-07-16 AIH776 FRA → ICN Jul 16, 10:00 UTCJul 16, 20:25 UTC10h 25m
2026-07-16 AIH775 VIE → FRA Jul 16, 06:35 UTCJul 16, 07:40 UTC1h 5m
2026-07-15 AIH775 - Jul 15, 15:35 UTCJul 16, 04:10 UTC12h 35m
2026-07-15 AIH775 - Jul 15, 14:25 UTCJul 15, 14:50 UTC25m
2026-07-14 AIH396 - Jul 14, 18:20 UTCJul 14, 21:05 UTC2h 45m
2026-07-14 AIH396 - Jul 14, 16:15 UTCJul 14, 16:30 UTC15m
2026-07-14 AIH396 - Jul 14, 13:40 UTCJul 14, 14:15 UTC35m
2026-07-14 AIH396 - Jul 14, 12:05 UTCJul 14, 12:35 UTC30m
2026-07-14 AIH395 - Jul 14, 03:40 UTCJul 14, 09:05 UTC5h 25m
2026-07-13 AIH794 - Jul 13, 22:55 UTCJul 13, 23:15 UTC20m
2026-07-13 AIH794 - Jul 13, 12:25 UTCJul 13, 22:05 UTC9h 40m
2026-07-13 AIH793 - Jul 13, 09:00 UTCJul 13, 10:05 UTC1h 5m
2026-07-12 AIH793 ICN → STN Jul 12, 15:05 UTCJul 13, 06:30 UTC15h 25m
2026-07-12 AIH954 HKG → ICN Jul 12, 02:01 UTCJul 12, 05:05 UTC3h 5m
2026-07-11 AIH954 - Jul 11, 22:20 UTCJul 11, 23:05 UTC45m
2026-07-11 AIH954 - Jul 11, 21:25 UTCJul 11, 21:35 UTC10m
2026-07-11 AIH953 - Jul 11, 15:35 UTCJul 11, 15:55 UTC20m
2026-07-10 AIH794 - Jul 10, 12:55 UTCJul 10, 14:55 UTC2h 0m
2026-07-10 AIH793 - Jul 10, 09:20 UTCJul 10, 10:20 UTC1h 0m
2026-07-09 AIH793 ICN → STN Jul 9, 15:20 UTCJul 10, 06:55 UTC15h 35m
2026-07-09 AIH588 - Jul 9, 05:15 UTCJul 9, 05:35 UTC20m
2026-07-08 AIH588 - Jul 8, 18:30 UTCJul 9, 04:25 UTC9h 55m

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 HL7436 page for operator, model, and routing details .

Mode-S 71BC36 frequently asked

What is Mode-S code 71BC36?
71BC36 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL7436.
Where is Mode-S 71BC36 registered?
Mode-S code 71BC36 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 71BC36 broadcasting right now?
Yes. Mode-S 71BC36 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71BC36, octal 34336066, decimal 7,453,750.
What flights does 71BC36 operate?
Mode-S 71BC36 has broadcast 20 distinct callsigns, including AIH242, AIH286, AIH587, AIH248, AIH793.