sensors Mode-S transponder

71BA03

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

Currently assigned to HL7203 · BOEING 777-300ER

Hex
71BA03
Octal
34335003
Decimal
7,453,187
Country
KR
Tail
HL7203
Type
B77W
Broadcasting now · callsign KAL033 · 7,225 ft
Flights observed
98
Distinct callsigns
20
Country
KR
Last broadcast
5m ago

Current position

71BA03 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 71BA03 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
KAL085 Korean Air 12 2026-05-20
KAL086 Korean Air 11 2026-05-21
KAL006 - 8 2026-05-27
KAL907 Korean Air 7 2026-05-24
KAL005 - 7 2026-05-26
KAL908 Korean Air 6 2026-05-25
KAL902 Korean Air 5 2026-05-20
KAL901 Korean Air 5 2026-05-19
KAL094 Korean Air 5 2026-05-29
KAL035 Korean Air 5 2026-05-22
KAL093 Korean Air 4 2026-05-28
KAL036 Korean Air 4 2026-05-22
KAL034 Korean Air 4 2026-05-09
KAL622 Korean Air 2 2026-04-25
KAL621 Korean Air 2 2026-04-24
KAL2021 Korean Air 2 2026-04-27
KAL033 Korean Air 2 2026-05-30
KAL938 Korean Air 1 2026-05-04
KAL937 Korean Air 1 2026-05-04
KAL844 Korean Air 1 2026-05-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 KAL033 ICN → ATL May 30, 00:05 UTCMay 30, 12:45 UTC12h 40m
2026-05-29 KAL094 IAD → ICN May 29, 08:20 UTCMay 29, 08:50 UTC30m
2026-05-28 KAL094 IAD → ICN May 28, 17:40 UTCMay 29, 07:45 UTC14h 5m
2026-05-28 KAL093 ICN → IAD May 28, 02:00 UTCMay 28, 15:05 UTC13h 5m
2026-05-27 KAL006 LAS → ICN May 27, 07:05 UTCMay 27, 19:50 UTC12h 45m
2026-05-26 KAL005 ICN → LAS May 26, 12:24 UTCMay 26, 23:10 UTC10h 45m
2026-05-26 KAL844 TAO → ICN May 26, 08:19 UTCMay 26, 08:45 UTC25m
2026-05-26 KAL843 ICN → TAO May 26, 04:39 UTCMay 26, 05:00 UTC20m
2026-05-26 KAL744 NGO → ICN May 26, 00:35 UTCMay 26, 02:00 UTC1h 25m
2026-05-25 KAL743 ICN → NGO May 25, 10:35 UTCMay 25, 11:55 UTC1h 20m
2026-05-25 KAL908 LHR → ICN May 25, 07:00 UTCMay 25, 07:25 UTC25m
2026-05-24 KAL908 LHR → ICN May 24, 19:10 UTCMay 24, 23:46 UTC4h 36m
2026-05-24 KAL907 ICN → LHR May 24, 10:55 UTCMay 24, 15:45 UTC4h 50m
2026-05-24 KAL907 ICN → LHR May 24, 02:25 UTCMay 24, 02:40 UTC15m
2026-05-22 KAL036 ATL → ICN May 22, 17:45 UTCMay 23, 09:15 UTC15h 30m
2026-05-22 KAL035 ICN → ATL May 22, 02:05 UTCMay 22, 15:00 UTC12h 55m
2026-05-21 KAL086 JFK → ICN May 21, 05:20 UTCMay 21, 20:35 UTC15h 15m
2026-05-20 KAL085 ICN → JFK May 20, 11:40 UTCMay 21, 01:25 UTC13h 45m
2026-05-20 KAL902 CDG → ICN May 20, 06:45 UTCMay 20, 07:10 UTC25m
2026-05-19 KAL902 CDG → ICN May 19, 19:10 UTCMay 20, 05:50 UTC10h 41m
2026-05-19 KAL901 ICN → CDG May 19, 04:25 UTCMay 19, 16:45 UTC12h 20m
2026-05-19 KAL901 ICN → CDG May 19, 03:10 UTCMay 19, 03:25 UTC15m
2026-05-18 KAL908 LHR → ICN May 18, 06:35 UTCMay 18, 07:00 UTC25m
2026-05-17 KAL908 LHR → ICN May 17, 19:05 UTCMay 18, 05:50 UTC10h 45m
2026-05-17 KAL907 ICN → LHR May 17, 10:50 UTCMay 17, 15:50 UTC5h 0m
2026-05-17 KAL907 ICN → LHR May 17, 02:20 UTCMay 17, 02:35 UTC15m
2026-05-16 KAL086 JFK → ICN May 16, 05:00 UTCMay 16, 19:25 UTC14h 26m
2026-05-15 KAL085 ICN → JFK May 15, 10:45 UTCMay 16, 00:45 UTC13h 59m
2026-05-14 KAL094 IAD → ICN May 14, 17:55 UTCMay 15, 07:45 UTC13h 50m
2026-05-14 KAL093 ICN → IAD May 14, 01:55 UTCMay 14, 15:20 UTC13h 25m
2026-05-13 KAL086 JFK → ICN May 13, 05:20 UTCMay 13, 19:50 UTC14h 30m
2026-05-12 KAL085 ICN → JFK May 12, 11:10 UTCMay 13, 00:55 UTC13h 45m
2026-05-11 KAL908 LHR → ICN May 11, 19:05 UTCMay 11, 22:00 UTC2h 55m
2026-05-11 KAL907 ICN → LHR May 11, 07:25 UTCMay 11, 16:05 UTC8h 40m
2026-05-11 KAL907 ICN → LHR May 11, 02:20 UTCMay 11, 02:30 UTC10m
2026-05-09 KAL034 ATL → ICN May 9, 15:55 UTCMay 10, 06:55 UTC15h 0m
2026-05-09 KAL033 ICN → ATL May 9, 00:15 UTCMay 9, 13:05 UTC12h 50m
2026-05-07 KAL094 IAD → ICN May 7, 17:40 UTCMay 8, 08:55 UTC15h 15m
2026-05-07 KAL093 ICN → IAD May 7, 01:55 UTCMay 7, 14:55 UTC13h 0m
2026-05-06 KAL006 - May 6, 07:10 UTCMay 6, 19:20 UTC12h 9m
2026-05-05 KAL005 - May 5, 12:35 UTCMay 5, 23:30 UTC10h 55m
2026-05-04 KAL938 VIE → ICN May 4, 16:35 UTCMay 5, 02:05 UTC9h 31m
2026-05-04 KAL937 ICN → VIE May 4, 03:09 UTCMay 4, 13:40 UTC10h 30m
2026-05-03 KAL086 JFK → ICN May 3, 05:00 UTCMay 3, 19:55 UTC14h 55m
2026-05-02 KAL085 ICN → JFK May 2, 12:35 UTCMay 3, 00:35 UTC12h 0m
2026-05-02 KAL085 ICN → JFK May 2, 11:30 UTCMay 2, 11:50 UTC20m
2026-05-01 KAL908 LHR → ICN May 1, 19:00 UTCMay 2, 06:00 UTC11h 0m
2026-05-01 KAL907 ICN → LHR May 1, 04:00 UTCMay 1, 16:20 UTC12h 20m
2026-04-30 KAL006 - Apr 30, 07:05 UTCApr 30, 19:25 UTC12h 20m
2026-04-29 KAL005 - Apr 29, 12:30 UTCApr 29, 22:30 UTC10h 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 HL7203 page for operator, model, and routing details .

Mode-S 71BA03 frequently asked

What is Mode-S code 71BA03?
71BA03 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL7203.
Where is Mode-S 71BA03 registered?
Mode-S code 71BA03 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 71BA03 broadcasting right now?
Yes. Mode-S 71BA03 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71BA03, octal 34335003, decimal 7,453,187.
What flights does 71BA03 operate?
Mode-S 71BA03 has broadcast 20 distinct callsigns, including KAL085, KAL086, KAL006, KAL907, KAL005.