Apparatus

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sensors Mode-S transponder

71BA18

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

Currently assigned to HL7218 · BOEING 737 MAX 8

Hex
71BA18
Octal
34335030
Decimal
7,453,208
Country
KR
Tail
HL7218
Type
B38M
Transponder active on ground
Flights observed
432
Distinct callsigns
20
Country
KR
Last broadcast
Jul 26, 21:35 UTC

Last known position

Most recent position reported by Mode-S 71BA18.

Country allocation

The ICAO 24-bit address 71BA18 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
JNA735 Jin Air 18 2026-07-25
JNA736 Jin Air 17 2026-07-26
JNA358 Jin Air 17 2026-07-24
JNA360 Jin Air 14 2026-07-20
JNA359 Jin Air 14 2026-07-20
JNA044 - 14 2026-07-22
JNA362 Jin Air 13 2026-07-23
JNA349 Jin Air 13 2026-07-26
JNA350 Jin Air 12 2026-07-26
JNA347 Jin Air 12 2026-07-21
JNA263 Jin Air 12 2026-07-25
JNA092 Jin Air 12 2026-07-23
JNA088 - 12 2026-07-19
JNA348 - 11 2026-07-21
JNA264 Jin Air 11 2026-07-25
JNA091 - 11 2026-07-16
JNA738 - 10 2026-07-10
JNA737 - 10 2026-07-10
JNA357 - 10 2026-07-07
JNA242 - 10 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 JNA081 ICN → DAD Jul 26, 11:55 UTCJul 26, 21:30 UTC9h 35m
2026-07-26 JNA350 KKJ → ICN Jul 26, 09:35 UTCJul 26, 10:30 UTC55m
2026-07-26 JNA349 ICN → KKJ Jul 26, 07:10 UTCJul 26, 07:55 UTC45m
2026-07-26 JNA736 RMQ → ICN Jul 26, 02:55 UTCJul 26, 05:10 UTC2h 15m
2026-07-25 JNA735 ICN → RMQ Jul 25, 23:10 UTCJul 26, 01:30 UTC2h 20m
2026-07-25 JNA214 NRT → ICN Jul 25, 12:05 UTCJul 25, 14:05 UTC2h 0m
2026-07-25 JNA213 ICN → NRT Jul 25, 08:45 UTCJul 25, 10:40 UTC1h 55m
2026-07-25 JNA264 FUK → ICN Jul 25, 06:20 UTCJul 25, 07:20 UTC1h 0m
2026-07-25 JNA263 ICN → FUK Jul 25, 03:35 UTCJul 25, 04:30 UTC55m
2026-07-24 JNA917 ICN → ICN Jul 24, 14:40 UTCJul 25, 00:30 UTC9h 50m
2026-07-24 JNA212 NRT → ICN Jul 24, 11:15 UTCJul 24, 13:15 UTC2h 0m
2026-07-24 JNA211 ICN → NRT Jul 24, 08:00 UTCJul 24, 09:55 UTC1h 55m
2026-07-24 JNA358 SHI → ICN Jul 24, 00:00 UTCJul 24, 05:30 UTC5h 30m
2026-07-23 JNA092 PQC → ICN Jul 23, 08:25 UTCJul 23, 20:10 UTC11h 45m
2026-07-23 JNA362 ISG → ICN Jul 23, 00:50 UTCJul 23, 06:20 UTC5h 30m
2026-07-22 JNA044 - Jul 22, 12:45 UTCJul 22, 22:25 UTC9h 40m
2026-07-22 JNA736 RMQ → ICN Jul 22, 03:10 UTCJul 22, 05:25 UTC2h 15m
2026-07-21 JNA735 ICN → RMQ Jul 21, 23:20 UTCJul 22, 01:25 UTC2h 5m
2026-07-21 JNA348 - Jul 21, 10:40 UTCJul 21, 12:10 UTC1h 30m
2026-07-21 JNA347 ICN → NGO Jul 21, 08:00 UTCJul 21, 09:20 UTC1h 20m
2026-07-20 JNA358 SHI → ICN Jul 20, 23:45 UTCJul 21, 05:50 UTC6h 5m
2026-07-20 JNA081 ICN → DAD Jul 20, 11:55 UTCJul 20, 21:45 UTC9h 50m
2026-07-20 JNA360 TAK → ICN Jul 20, 08:40 UTCJul 20, 09:50 UTC1h 10m
2026-07-20 JNA359 ICN → TAK Jul 20, 05:45 UTCJul 20, 07:00 UTC1h 15m
2026-07-19 JNA088 ICN → ICN Jul 19, 12:05 UTCJul 19, 22:50 UTC10h 45m
2026-07-19 JNA238 KIX → ICN Jul 19, 08:45 UTCJul 19, 10:00 UTC1h 15m
2026-07-19 JNA237 ICN → KIX Jul 19, 05:55 UTCJul 19, 07:30 UTC1h 35m
2026-07-19 JNA274 FUK → ICN Jul 19, 03:25 UTCJul 19, 04:15 UTC50m
2026-07-19 JNA273 ICN → FUK Jul 19, 00:55 UTCJul 19, 01:40 UTC45m
2026-07-18 JNA088 ICN → ICN Jul 18, 12:15 UTCJul 18, 23:10 UTC10h 55m
2026-07-18 JNA350 - Jul 18, 09:30 UTCJul 18, 10:30 UTC1h 0m
2026-07-18 JNA349 - Jul 18, 07:05 UTCJul 18, 07:55 UTC50m
2026-07-18 JNA274 FUK → ICN Jul 18, 03:30 UTCJul 18, 04:30 UTC1h 0m
2026-07-18 JNA273 ICN → FUK Jul 18, 01:10 UTCJul 18, 01:54 UTC45m
2026-07-17 JNA087 ICN → ICN Jul 17, 12:45 UTCJul 17, 23:10 UTC10h 25m
2026-07-17 JNA238 KIX → ICN Jul 17, 08:45 UTCJul 17, 10:10 UTC1h 25m
2026-07-17 JNA237 ICN → KIX Jul 17, 05:55 UTCJul 17, 07:20 UTC1h 25m
2026-07-17 JNA242 - Jul 17, 02:39 UTCJul 17, 03:59 UTC1h 20m
2026-07-16 JNA241 ICN → KIX Jul 16, 23:35 UTCJul 17, 01:00 UTC1h 25m
2026-07-16 JNA091 ICN → ICN Jul 16, 08:35 UTCJul 16, 20:15 UTC11h 40m
2026-07-16 JNA361 ICN → ICN Jul 16, 01:00 UTCJul 16, 06:30 UTC5h 30m
2026-07-15 JNA044 ICN → ICN Jul 15, 13:25 UTCJul 15, 23:15 UTC9h 50m
2026-07-15 JNA240 KIX → ICN Jul 15, 10:25 UTCJul 15, 11:50 UTC1h 25m
2026-07-15 JNA239 ICN → KIX Jul 15, 07:30 UTCJul 15, 09:00 UTC1h 30m
2026-07-15 JNA358 ICN → ICN Jul 15, 00:10 UTCJul 15, 05:35 UTC5h 25m
2026-07-14 JNA044 - Jul 14, 12:35 UTCJul 14, 22:15 UTC9h 40m
2026-07-14 JNA264 - Jul 14, 06:05 UTCJul 14, 07:10 UTC1h 5m
2026-07-14 JNA263 - Jul 14, 03:40 UTCJul 14, 04:30 UTC50m
2026-07-13 JNA002 - Jul 13, 20:55 UTCJul 13, 23:45 UTC2h 50m
2026-07-13 JNA002 - Jul 13, 18:35 UTCJul 13, 18:50 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 HL7218 page for operator, model, and routing details .

Mode-S 71BA18 frequently asked

What is Mode-S code 71BA18?
71BA18 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL7218.
Where is Mode-S 71BA18 registered?
Mode-S code 71BA18 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 71BA18 broadcasting right now?
Mode-S 71BA18 is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71BA18, octal 34335030, decimal 7,453,208.
What flights does 71BA18 operate?
Mode-S 71BA18 has broadcast 20 distinct callsigns, including JNA735, JNA736, JNA358, JNA360, JNA359.