Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

71C272

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

Currently assigned to HL8272 · BOEING 737-900

Hex
71C272
Octal
34341162
Decimal
7,455,346
Country
KR
Tail
HL8272
Type
B739
No current signal · last broadcast Jul 26, 22:30 UTC
Flights observed
294
Distinct callsigns
20
Country
KR
Last broadcast
Jul 26, 22:30 UTC

Last known position

Most recent position reported by Mode-S 71C272.

Country allocation

The ICAO 24-bit address 71C272 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
KAL2134 Korean Air 21 2026-07-26
KAL1405 Korean Air 21 2026-07-20
KAL115 - 21 2026-07-21
KAL2133 Korean Air 20 2026-07-26
KAL1402 Korean Air 20 2026-07-26
KAL2081 Korean Air 19 2026-07-19
KAL116 Korean Air 19 2026-07-21
KAL133 Korean Air 14 2026-07-21
KAL134 Korean Air 10 2026-07-22
KAL2082 Korean Air 8 2026-07-26
KAL1431 Korean Air 7 2026-07-23
KAL126 - 7 2026-07-10
KAL620 - 6 2026-07-07
KAL1432 Korean Air 6 2026-07-23
KAL125 - 6 2026-07-10
KAL619 - 5 2026-07-07
KAL1562 - 5 2026-07-20
KAL1549 - 5 2026-07-20
KAL782 Korean Air 4 2026-07-21
KAL781 Korean Air 4 2026-07-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 KAL1402 PUS → ICN Jul 26, 22:15 UTCJul 26, 22:30 UTC15m
2026-07-26 KAL2134 NGO → PUS Jul 26, 11:15 UTCJul 26, 12:20 UTC1h 5m
2026-07-26 KAL2133 PUS → NGO Jul 26, 08:40 UTCJul 26, 09:45 UTC1h 5m
2026-07-26 KAL2082 TAO → PUS Jul 26, 02:15 UTCJul 26, 07:10 UTC4h 56m
2026-07-25 KAL2134 NGO → PUS Jul 25, 11:20 UTCJul 25, 12:30 UTC1h 10m
2026-07-25 KAL2133 PUS → NGO Jul 25, 08:55 UTCJul 25, 10:00 UTC1h 5m
2026-07-25 KAL1411 ICN → PUS Jul 25, 06:55 UTCJul 25, 07:35 UTC40m
2026-07-25 KAL744 NGO → ICN Jul 25, 00:30 UTCJul 25, 01:55 UTC1h 25m
2026-07-24 KAL743 ICN → NGO Jul 24, 10:45 UTCJul 24, 12:10 UTC1h 25m
2026-07-24 KAL107 ICN → HGH Jul 24, 03:30 UTCJul 24, 09:05 UTC5h 35m
2026-07-23 KAL1432 TAE → ICN Jul 23, 23:05 UTCJul 23, 23:40 UTC35m
2026-07-23 KAL1431 ICN → TAE Jul 23, 10:40 UTCJul 23, 11:10 UTC30m
2026-07-22 KAL796 CTS → ICN Jul 22, 11:25 UTCJul 22, 12:30 UTC1h 5m
2026-07-22 KAL134 CGO → ICN Jul 22, 04:15 UTCJul 22, 04:40 UTC25m
2026-07-21 KAL133 ICN → CGO Jul 21, 23:15 UTCJul 21, 23:40 UTC25m
2026-07-21 KAL782 FUK → ICN Jul 21, 12:15 UTCJul 21, 13:15 UTC1h 0m
2026-07-21 KAL781 ICN → FUK Jul 21, 09:50 UTCJul 21, 10:40 UTC50m
2026-07-21 KAL116 YNJ → ICN Jul 21, 06:15 UTCJul 21, 06:40 UTC25m
2026-07-21 KAL115 - Jul 21, 00:50 UTCJul 21, 01:20 UTC30m
2026-07-20 KAL1402 - Jul 20, 22:00 UTCJul 20, 22:45 UTC45m
2026-07-20 KAL1562 - Jul 20, 12:30 UTCJul 20, 12:50 UTC20m
2026-07-20 KAL1549 - Jul 20, 10:30 UTCJul 20, 10:45 UTC15m
2026-07-20 KAL1405 ICN → PUS Jul 20, 08:35 UTCJul 20, 09:15 UTC40m
2026-07-20 KAL116 YNJ → ICN Jul 20, 05:50 UTCJul 20, 06:20 UTC30m
2026-07-20 KAL115 - Jul 20, 00:45 UTCJul 20, 01:25 UTC40m
2026-07-19 KAL1402 PUS → ICN Jul 19, 22:05 UTCJul 19, 22:50 UTC45m
2026-07-19 KAL2134 - Jul 19, 11:10 UTCJul 19, 12:20 UTC1h 10m
2026-07-19 KAL2133 PUS → NGO Jul 19, 08:30 UTCJul 19, 09:35 UTC1h 5m
2026-07-19 KAL2081 PUS → TAO Jul 19, 02:15 UTCJul 19, 06:50 UTC4h 35m
2026-07-18 KAL2134 - Jul 18, 11:10 UTCJul 18, 12:10 UTC1h 0m
2026-07-18 KAL2133 - Jul 18, 08:30 UTCJul 18, 09:30 UTC1h 0m
2026-07-18 KAL2081 PUS → TAO Jul 18, 02:09 UTCJul 18, 06:50 UTC4h 41m
2026-07-17 KAL1562 - Jul 17, 12:50 UTCJul 17, 13:05 UTC15m
2026-07-17 KAL1549 - Jul 17, 10:55 UTCJul 17, 11:10 UTC15m
2026-07-17 KAL1405 ICN → PUS Jul 17, 08:40 UTCJul 17, 09:40 UTC1h 0m
2026-07-17 KAL116 - Jul 17, 06:15 UTCJul 17, 06:40 UTC25m
2026-07-17 KAL115 - Jul 17, 01:00 UTCJul 17, 01:35 UTC35m
2026-07-16 KAL1402 PUS → ICN Jul 16, 22:15 UTCJul 16, 22:59 UTC45m
2026-07-16 KAL1562 - Jul 16, 12:44 UTCJul 16, 13:00 UTC15m
2026-07-16 KAL1549 - Jul 16, 10:35 UTCJul 16, 10:45 UTC10m
2026-07-16 KAL1405 - Jul 16, 08:35 UTCJul 16, 09:20 UTC45m
2026-07-16 KAL128 - Jul 16, 05:25 UTCJul 16, 06:05 UTC40m
2026-07-15 KAL127 - Jul 15, 23:50 UTCJul 16, 00:30 UTC40m
2026-07-15 KAL782 - Jul 15, 12:20 UTCJul 15, 13:20 UTC1h 0m
2026-07-15 KAL781 - Jul 15, 09:55 UTCJul 15, 10:35 UTC40m
2026-07-15 KAL116 - Jul 15, 06:15 UTCJul 15, 06:35 UTC20m
2026-07-15 KAL115 - Jul 15, 00:55 UTCJul 15, 01:50 UTC55m
2026-07-14 KAL1402 PUS → ICN Jul 14, 22:00 UTCJul 14, 22:40 UTC40m
2026-07-14 KAL2134 - Jul 14, 11:30 UTCJul 14, 12:35 UTC1h 5m
2026-07-14 KAL2133 - Jul 14, 09:00 UTCJul 14, 10:00 UTC1h 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 HL8272 page for operator, model, and routing details .

Mode-S 71C272 frequently asked

What is Mode-S code 71C272?
71C272 is an ICAO 24-bit transponder address. Allocated to Korea, South. Assigned to HL8272.
Where is Mode-S 71C272 registered?
Mode-S code 71C272 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 71C272 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 71C272, octal 34341162, decimal 7,455,346.
What flights does 71C272 operate?
Mode-S 71C272 has broadcast 20 distinct callsigns, including KAL2134, KAL1405, KAL115, KAL2133, KAL1402.